concealed hinge adjustable hinges door hinge invisible hinge hidden hinges

hinge is used to connect two solid hinge and allows rotation between a mechanical device to do. Hinges may be provided by movable components, or by a foldable material. Hinge mainly installed in doors and windows. Installed in the cabinet hinge more; divided into categories according to the material, stainless steel hinges and iron hinges, to let people get better enjoyment appeared hydraulic hinges, is characterized by a certain buffer, the greatest degree of reduced noise.

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180 degree hinge door hardware iron gate hinge furniture fitting furniture hardware

180 degree hinge door hardware iron gate hinge furniture fitting furniture hardware door hinge types hinges door door hinge steel hinge hinges italy kitchen hinges hinge for pvc doors types of hinges hinges for doors.
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the difference of the concealed hinge and the general hinge

hinge is used to connect two solid hinge and allows rotation between a mechanical device to do. Hinges may be provided by movable components, or by a foldable material. Hinge mainly installed in doors and windows. Installed in the cabinet hinge more; divided into categories according to the material, stainless steel hinges and iron hinges, to let people get better enjoyment appeared hydraulic hinges, is characterized by a certain buffer, the greatest degree of reduced noise

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nut

Nuts also called nuts, nut there are many types generally have hexagonal nut, there is a round nut, square nut and so on. For some of the standard nut is quite clear. Some standard sizes, materials required standard, electroplating standards are relatively clear. And different types of nuts have different standards, there is a detailed description about the nut specifications and standards.http://sgelec.en.alibaba.com/
Hex nuts and screws, bolts, screws relative to the mating use mechanical fastening the connecting role. Which after a type six most widely used nuts, C-level nut for rough surface, less precision machinery, equipment or structures; A and Class B surface is smooth nut for the high precision machinery, equipment or structures. 2 M-type hexagonal nut thickness thicker, more often often required for assembly and disassembly of the occasion. Hexagon thin nuts M thin thickness, used for parts of the surface are connected space is limited occasions.http://www.aliexpress.com/store/502733


For hex nut, commonly used standards: GB52, GB6170, GB6172 and DIN934, for the main difference between them: GB6170 thickness than the GB52, GB6172 and DIN934 come thick, commonly known as the thick nut. The other is on the edge of the distinction, M8 nut series DIN934, GB6170, GB6172 are on the opposite side of the right side 13MM 14MM than GB52 smaller 1MM, M10 nut, DIN934 with GB52 opposite side of 17MM, than GB6170 and GB6172's right side to a large 1MM, M12 nut, DIN934, GB52 19MM than on the opposite side to the right side of GB6170 and GB6172 18MM larger 1MM. For the M14 nut, DIN934, GB52 22MM than on the opposite side to the right side of GB6170 and GB6172 21MM larger 1MM. The other is the M22 nut, DIN934, GB52 the right side for the 32MM, than GB6170, GB6172 opposite side 34MM smaller 2MM. (GB6170 and GB6172 addition to its thickness is not the same, the same as the width of the edge) remaining specifications without considering the thickness of the case can be common.
Inner hexagon, the GB has two versions, one for GB70-76, 76 years versions, one for the GB70-85, 85 years version, so the actual business operation should note the difference: where GB70-85 completely overlap with DIN912 Therefore, the case for the use of new targets, there is no significant difference, mainly GB70-76 and the distinction between DIN912: M8 Hexagon series products, GB70-76's round diameter 12.5MM, compared to the DIN912 13.27MM smaller, M10 series Hexagon products, GB70-76's round diameter 15MM, smaller than some of the DIN912 16.27, M12 series Hex, GB70-76's round diameter 18MM, on the opposite side than DIN912 18.27 to be smaller, and the other like M16, M20 Series Hexagon GB70-76's round diameter is smaller than DIN912 0.33MM, respectively, 24MM, 30MM. The DIN912 respectively 24.33MM and 30.33MM. Another old standard with the German standard Hexagon width between the inner right side of the standard varies, GB70-76 within the right side to be smaller, in the business operations should also be noted.https://www.facebook.com/DongguanYizeMouldCoLtd?ref=hl
In addition, usually the carriage bolts may be used, there are some differences, but also to make a statement on this, in GB, there are two carriage bolts standard, that GB12 (Cup head square neck screws) and GB14 (Mushroom head square neck screws), usually there are more commonly used in the market DIN standard DIN603. Now distinguish between these three: For round neck, when compared in the same specification is: GB12. Usually in the carriage bolts are used, often require large, thick neck, so DIN603 carriage bolts fully meet the requirements of the standard.
Name:
1 machine screws 2. Tapping screws 3. Drilling screws 4. Wallboard nails 5. Chipboard screws 6 wood screws 7. Hexagonal wood screws 8 screws with 9. Combination screw 10. Micro screw 11. Furniture screws 12 Electronic screw
Head type:
1 hexagon (hexagon head) 2. Hex head flange (hexagon head with flange) 3. Square head (square head) 4.T shaped head T head (hammer head) 5. Oval head mushroom head (truss head ) 6. cylinder head (cheese head) 7. round (round head) 8. pan head (pan head) 9. countersunk head countersunk head (flat head) 10. countersunk head raised countersunk head (oval
Groove:
1 Philip 2 October / word 3 word 4 within the triangle 5. Angles Quartet 6 Cross 7 Torx 8 Flower 9. Quincunx 10 flower-shaped word 11. Specially shaped 12. Hexagonhttp://www.aliexpress.com/store/502733

Generally, we must first of fine and coarse teeth tooth cap nut, but in fact no matter what fine teeth, coarse teeth, their specifications are the same, their specifications are M3, M4, M5, M6, M8, M10, etc. . But there is a kind of watched British, American and hex nuts, this is only the national standard has been different. We produced in China, known as GB hex nut.http://www.aliexpress.com/store/502733

There are two kinds, one is iron, which is carbon steel. One is of stainless steel, of course, copper, aluminum, nuts, but it is rarely used. How much copper is to be useful, like aluminum nut rarely used. Hex Nut level there are two, one is 4.8, ordinary nuts, one is 8 nut. More about the nut industry knowledge, read specifications table nut, the nut industry national standard tables. These nuts Specifications knowledge and industry standards. Allows us to have a better understanding on the nut.

door

There are many types of doors, materials and uses and can probably be formally divided into the following categories:
Solid wood doors, steel doors, paint doors, wood doors, security doors, steel doors, armored doors, decorative doors, fire doors, composite doors, molded doors, security doors, aluminum doors, wood doors, plastic doors, partition doors, cabinet doors, folding doors, sliding doors, metal doors, insulation doors, aluminum doors, sliding doors, louvered doors, bronze doors, inlaid glass doors, automatic doors, telescopic doors, explosion-proof glass doors, wood doors, suite doors, aluminum-magnesium alloy doors.https://www.facebook.com/DongguanYizeMouldCoLtd?ref=hl


By location of: exterior doors, interior doors.
By material: wooden doors, steel doors, aluminum doors, plastic doors, steel doors, aluminum doors, stainless steel doors, glass doors.
Press accounts points: swing, swinging door, sliding doors, folding doors, revolving doors, shutter doors, ecological doors.http://www.aliexpress.com/store/429470
Doors wide range of dazzling, hard on its inside. Therefore, the systematic understanding of the type of door, door help to improve the overall understanding of the purchase of doors
Accurately determine when to do a great help.
The role of speaking from the door, the door can be divided into the main door, entry door, interior doors, blast doors, blast-resistant doors, fire doors.


Entry door, also known as security doors, most of the residential buildings completed when they installed the entry door, some consumers for security and other considerations will be replaced. Entry door are pure steel entry door and armored doors. Armored door is a high-end entry door, the main characteristics are not using the traditional method of surface treatment, but in the steel doors to increase the surface layer of wood finishes, it will ensure the entry door security element, and greatly improve the grade of the door, but can also be better coordinated with the interior decoration. Relative to the entry door, the consumer is using a lot more interior doors, interior doors are many types, but also the species most consumers scratching their heads. The following pages provide information on the classification and characteristics of interior doors.http://www.aliexpress.com/store/429470
High-grade wood doors refers to all parts of a "walnut", "teak", "cherry" like precious wood, Seiko secret agents from the doors that rich texture, appearance high quality, environmental protection and good, but because supplies giant fees, process requirements extraordinarily high, the price is very high, the market is quite rare.
Ordinary wood doors can be divided into two kinds, one is with ordinary wood (such as pine, pear, etc.) assembled together, such doors environmental performance, technology requirements, but due to poor choice of wood, the product is not very grade, there is a use of all solid wood finger board assembly formed, such doors environmental protection is also good, but the production process is relatively simple, the style is not very rich, the appearance is not very good, ordinary wood door exists primarily because it caters to strong consumer awareness of its products there is little merit.
Solid wood doors composite door is the future mainstream market, solid wood composite door because the fine craft created extraordinary senses, the effect is almost equal to wood doors; its scientific design to achieve a stable quality, use value higher than wood doors, above several interior doors can be called high-grade interior doors.http://www.aliexpress.com/store/429470

Steel doors is a steel inner core, plus a wood surface treatment of interior doors with solid wood doors have a certain resemblance, but the quality and grade is much lower than solid wood doors, steel doors of the environmental performance is also good, than die and molded door is better, in general, steel doors also in great demand; Splinter tree molded door with PVC laminated doors up to see on the market today, but according to the author predicted, these two doors outlook is not optimistic, both doors mainly environmental protection and appearance defects, defects of this objective can never be overcome.

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Plating

Plating (Electroplating) is the principle of electrolysis in some metal surfaces coated with a thin layer of another metal or alloy of the process is the use of electrolysis of metal or other material attached to the surface parts of the process of a metal film which serves to prevent corrosion, improve wear resistance, electrical conductivity, and to increase the aesthetic reflective effect.

Work principle

To the plating tank plating requires a low-voltage high-current power supply as well as by the plating solution, to be plated parts (cathode) and an anode electrolysis apparatus. Wherein the plating solution composition varies depending on the coating, but contain metal ions provide the main salt, to complex metal ions in the main salt complexing agent forming a complex, to stabilize the pH of the buffer solution, the anode activator and special additives (eg brightener, grain refining agent, leveling agents, wetting agents, stress relieving agent and fog etc.). Plating metal ions in the bath under the action of an external electric field, the electrode reaction is reduced to metal atoms, and the metal deposition on the cathode process. Therefore, it is a liquid transfer including, electrochemical reactions and electrical crystallization step metal electrodeposition process....https://www.facebook.com/DongguanYizeMouldCoLtd?ref=hl


Filled with the plating solution in the plating bath, through a special cleaning and pretreatment to be plated as a cathode, an anode made ​​of a metal plating, the poles of the DC power supply respectively negative and positive connection. Plating the plating solution containing metal compounds, conducting salts, buffers, pH adjusting agents and additives such as an aqueous solution of components. Energized, the plating metal ions in solution, under the effect of the potential difference to move to the plating layer formed on the cathode. An anode formed of a metal plating of metal ions into the solution, in order to maintain the plating of the metal ion concentration. In some cases, such as chrome, is the use of lead, lead-antimony alloy insoluble anode, since only the transmission of electronic, conduction current. The concentration of chromium ions in the electrolyte, the need to rely periodically added to the bath to maintain a chromium compound. Plating, the anode material quality, the plating solution composition, temperature, current density, power-on time, mixing intensity, the precipitated impurities, power supply waveform, etc. will affect the quality of coating, the need for timely control.
First, the plating solution has six elements: the main salt, the salt, complexing agents, buffering agents, anode activator and additives.http://www.aliexpress.com/store/502733
Plating principle contains four areas: plating solution, plating reaction electrode and reaction principle, the metal electrodeposition process.
The electrochemical reaction in the plating reaction: The figure is a schematic view of a plating apparatus, the parts to be plated as the cathode, the cathode is connected to the DC power supply, the metal anode coupling the positive DC power supply, an anode are immersed in the bath with the female. When an electric potential is applied between the anode and cathode, then the following reaction occurs at the cathode: electrode from the bath and the bath diffuses into the interface of metal ions from the cathode to obtain Mn + n electron, reduction to the metal M. On the other hand, occurs at the anode and the cathode opposite reaction that occurs on the interface anode dissolution of the metal M, the release of metal ions to generate n electron Mn +


Electrode and the reaction mechanism

A, electrode potentialhttp://www.aliexpress.com/store/502733
When the metal electrode is immersed in a solution containing the metal ions when, there is a balance of the metal loses electrons and the reaction mixture dissolved in the solution of metal ions and precipitation of the metal in the electronic reverse reaction should exist: Mn ne = M
Equilibrium potential of the nature and the metal temperature of the solution concentration. For accurate comparison substance to balance the potential of nature, it is required when the solution temperature was 250 ℃, metal ion concentration of 1mol / L, the measured potential is called the standard electrode potential. A more negative standard electrode potential of the metal are easy to lose electrons are oxidized, and the standard electrode potential value larger metal are easy to obtain electrons is reduced.
B, polarization
The so-called polarization refers to a current through the electrode, the potential deviation from the equilibrium electrode potential of the phenomenon. So, again the current - potential curve is called polarization curves. The polarization effect was mainly due to electrochemical polarization and concentration polarization.
1, electrochemical polarization
Since the electrochemical reaction rate is less than the cathode external power supply to the speed of electrons, so that the electrode potential in the negative direction of the movement caused by the polarization.http://www.aliexpress.com/store/502733
2, the concentration polarization
As liquid layer adjacent to the electrode sheet bulk of the solution concentration and the concentration polarization arising differences occur, said concentration polarization, which is due to diffusion of ions in the solution caused by the movement speed is less than e.
Plating metal ions in the bath under the action of an external electric field, the electrode reaction and the reduction of the metal atoms on the cathode metal deposition process.
Electroplating is simple terms, that is plated in the presence of salts want a solution to the matrix metal to be plated as the cathode, through the electrolysis, the bath in the plating metal cation want metal deposited on the surface of the base, the formation of deposits.
Plating elements: 1. Cathode: plated objects, refers to various connector terminals. 2. Anode: if soluble anodes, compared want metallization. If insoluble anodes, most of precious metals (platinum, iridium oxide). 3. Electroplating syrup: Containing For metallization ion plating syrup. 4 plating tank: can withstand, storage tank plating syrup, general considerations strength, corrosion, temperature and other factors. 5 Rectifier: providing DC power to the device.
(Polished → polishing) → → degreasing → washing hanging → (electrolytic polishing or chemical polishing) → pickling activation → (prepreg) → Plating → washing → (post-treatment) → washing → drying → → test under the hanging package
Plating the plating operation conditions refers to changes in the operation of factors, including: the current density, temperature, stirring and power waveforms.
Cathode current densityhttp://www.aliexpress.com/store/502733
Any plating bath has a get a good range of current density, to get a good coating, said minimum current density lower current density, maximum current to get a good coating density of said current density limit. Generally, when the cathode current density is too low, the cathode polarization is small, the coating of coarse crystal grains, rarely used in the production of a cathode current density is too low. As the cathode current density increases, the cathode polarization also increased (amount of increase in polarization value depends on a variety of different plating solution), are becoming crystalline coating delicate close; but the cathode current density is not too large, can not exceed the allowable upper limit (different plating solution under different conditions with different cathode current density of the upper limit), exceed the allowable upper limit, due to a serious lack of metal ions near the cathode The reason, the cathode will be generated and the projecting tip shaped like the branches of the metal coating, or generated on the entire surface of the cathode porous shaped like a sponge coating. Often encountered in the production of parts is likely to occur at the sharp corners and edges, "burning" phenomenon, in severe dendrite formation, or a sponge-like coating.

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Cold-rolled plate

Cold-rolled sheet is hot rolled coil as raw material, at room temperature below the temperature of recrystallization rolling, including board and volumes.https://www.facebook.com/DongguanYizeMouldCoLtd?ref=hl


Cold rolling under the recrystallization, but generally understood to use rolling temperature of the rolled material. Rolled and cold-rolled aluminum foil rolled into plate. Than the thickness of 0.15 ~
  
Called plates, 0.15 to less known foil. Europe and the United States to use more 3-6 sets of continuous cold rolling mill as a device.

Applications 


Cold-rolled strip is widely used, such as automobile manufacturing, electrical products, rolling stock, aerospace, precision instruments, food and canned. 
Cold rolled steel sheet is ordinary carbon steel cold rolled sheet for short, also known as cold-rolled plate, commonly known as cold, sometimes mistakenly written as cold rolling plate. Cold plate is made of ordinary carbon steel hot rolled strip, after further cold rolled steel plate having a thickness of less than 4mm. Since rolling at room temperature, does not produce iron skin, therefore, the cold plate surface quality, dimensional accuracy, coupled with the annealing treatment, the mechanical properties and process performance are better than hot rolled steel sheet, in many areas, especially in the appliance manufacturing, it has been gradually replaced with hot rolled steel sheet. https://www.facebook.com/DongguanYizeMouldCoLtd?ref=hl
Applicable Grade: Q195, Q215, Q235, Q275; SPCC (Japanese brands); ST12 (German grade) 
Japanese general structural steel grades that way (JIS standard) 
1 Japanese steel grades in the general structural steel is mainly composed of three parts: The first part of that material, such as: S (Steel) said steel, F (Ferrum) represents iron; second portion of said different shapes, types, uses, such as P (Plate) indication board, T (Tube) indicates pipe, K (Kogu) represents the tool; the third part of that feature figures, usually minimum tensile strength. Such as: SS400 - S represents the first steel (Steel), said second S "structural" (Structure), 400 for the lower tensile strength of 400MPa, a tensile strength of 400MPa as a whole represents a general structural steel. 
2.SPHC-- the first steel Steel S is an abbreviation, P is the abbreviation plate Plate, H is the heat Heat acronym, C for commercial Commercial abbreviation indicates the overall hot-rolled steel sheet and strip for general use. 
3.SPHD-- indicates stamping rolled steel sheet and strip. 
4.SPHE-- expressed deep drawing hot-rolled steel sheet and strip. 
5.SPCC-- indicates a general cold-rolled carbon steel sheet and strip, equivalent to China Q195 ~ Q215A grades, Germany grade ST12. Airbender third letter C is Cold Cold abbreviations. The need to ensure mechanical performance, plus T in grade at the end as SPCCT. 
6.SPCD-- that Cold Rolled carbon steel sheet and strip, equivalent to China 08AL (13237) quality carbon structural steel, equivalent to the German grade ST13. 
7.SPCE-- expressing deep drawing cold rolled carbon steel sheet and strip, equivalent to China 08AL (5213) deep drawing steel, equivalent to the German grade ST14. Aging treatment, the grade at the end plus N, as SPCEN. 
Cold-rolled carbon steel sheet and strip quenched Code: annealed state is A, the standard quenching of S, 1/8 hard to 8,1 / 4 hard to 4,1 / 2 to 2 hard, hard to 1. 
Surface processing code: matt finishing for the D, luster finishing of B. Such as SPCC-SD standard conditioning, matt finishing rolled carbon sheet. Again SPCCT-SB represents the standard conditioning, light processing, sought assurances that the mechanical properties of cold-rolled carbon sheet. 
Symbol: 
1, Q-ordinary carbon steel yield point (limit) of the Code, it is "framed" the first phonetic alphabet; 195,215,235,255,275 - represent their yield point (limit ) values, unit: MPa MPa (N/mm2); Since Q235 steel strength, ductility, toughness and weldability and other mechanical properties of carbon structural steel is the best, can better meet the general use requirements, so a very wide range of applications. 
2, S-Steel (Steel), P-plate (Plate), C-rolled (cold), fourth in the C-commercial (commercial). 
3, ST-steel (Steel), 12 - ordinary grade cold-rolled steel sheet, 
Tags: dimensional accuracy - Size - Plate Breed Standard 
Cold-rolled steel: Steel - technology standard 
Tag example: B-0.57501500-GB708-88; steel, standard number Q/BQB402, grade SPCC, heat treatment annealing + formation (S), the central processing state table linen D, surface quality for the FB level trimming (cutting edge EC, not trimming EM) steel, thickness 0.5mm, B-level precision, width 1000mm, A-level precision, length 2000mm, A-level accuracy, roughness accuracy PF.A, is marked as: steel ECQ / BQB 402 - SPCC-SD-FB / (0.51000A2000A-PF.A); 
Cold-rolled steel: Q225-GB912-89 
Main origin: Baosteel, Anshan, Benxi Iron and Steel, Wuhan Steel, Handan Iron and Steel, Baotou Steel, Tangshan Iron and Steel, Lianyuan Steel, Jinan Iron and Steel, etc. 
Cold-rolled steel sheet: the ordinary carbon steel or low alloy steel cold-rolled steel. Good quality cold-rolled plate surface. Good drawing properties. Required to ensure that its cold and cup test pass, commonly used in the automotive and other industries and coated sheet materials. https://www.facebook.com/DongguanYizeMouldCoLtd?ref=hl
High-quality cold-rolled steel sheet: including a variety of high-quality cold-rolled steel sheet, the most commonly used is carbon structural steel, especially deep drawing cold rolled steel sheet, is made of cold-rolled carbon quality steel 08Al sheet, plate press surface quality is divided into three groups; Ⅰ, Ⅱ, Ⅲ, respectively particularly high, high, high surface finishing by drawing level is divided into ZF, HF, F grade (on behalf of Punch drawing the most complex, it is complicated, complex parts), according to the plate thickness tolerances, is divided into A, B two precision, widely used in automobile and tractor industries. 
Cold-rolled steel, smooth surface, fine processing for cars, refrigerators, washing machines and other appliances, and industrial equipment, various construction materials. With economic development, cold-rolled steel has been called a modern society must be material. Classification of cold-rolled products: hot rolled pickling, rolling hard, ordinary cold-rolled, galvanized (galvanized fingerprint resistant, hot dip galvanized), zinc, tin plating, coating, electrical steel (silicon steel) and so on. 
1, the hot pickling: 
2, hard roll: at room temperature for hot continuous rolling pickling.
Product Features: Because no annealing, and its high hardness (HRB greater than 90), poor machining performance, only a simple directional bending less than 90 degrees (perpendicular to the winding direction).

Product Category


(1) processed into ordinary cold rolling after annealing;
(2) before annealing treatment device processing zinc galvanizing;
(3) the basic need for processing panels.


Product Features:https://www.facebook.com/DongguanYizeMouldCoLtd?ref=hl
(A) have good durability, longer life compared with galvanized steel;
(2) has good heat resistance, compared with galvanized steel under high temperature and is not easy to change color;
(3) has a good thermal reflectivity;
(4) has a gorgeous silver-white surface;
(5) has a similar galvanized steel processing and coating performance;
(6) has good weldability.
Applications: demanding industries in the use of galvanized sheet.
6, tin plating (tin): The Frostin insoluble anode-type tin plating processing technology.
7, painted;
8, electrical steel (silicon steel).

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