CN203333795U - Coating structure of automobile die - Google Patents

Abstract

The utility model relates to the technical field of computer products, and in particular relates to a coating structure of an automobile die. The coating structure of the automobile die comprises an automobile die base body which is electroplated by a nickel-polytetrafluoroethylene coating. The nickel-polytetrafluoroethylene coating is 2.5-50 microns thick. The coating structure of the automobile die is not only good in wear resistance and corrosive resistance, but also has weldability and hardenability.

Description

A kind of vehicle mould coating structure

Technical field

The utility model relates to the vehicle mould product technical field, relates in particular to a kind of vehicle mould coating structure.

Background technology

Electroplating (Electroplating) utilizes electrolysis principle to plate the process of other metal or alloy of skim on some metallic surface.During plating, coated metal is done anode, is oxidized to positively charged ion and enters electroplate liquid; Metal products to be plated is done negative electrode, and the positively charged ion of coated metal is reduced formation coating in metallic surface.For getting rid of other cationic interference, and make coating evenly, firmly, need be with containing the cationic solution of coated metal, cooking electroplate liquid, to keep the cationic concentration of coated metal constant.

The purpose of electroplating is to plate metal plating (deposit) on base material, changes substrate surface character or size.Plating can strengthen metal erosion resistance (coated metal adopts corrosion resistant metal more), increase hardness, prevent abrasion, improve electroconductibility, oilness, thermotolerance and surface aesthetic.

Utilize electrolytic action to deposit to adhere to the technology good but metal cover that performance is different with body material on machinework.Electrolytic coating than hot dipping layer evenly, generally all thinner, from several micron, to tens microns, do not wait.

By electroplating, can on machinework, obtain and decorate protectiveness and various functional upper layer, can also repair the workpiece of wearing and tearing and processing error.Coating is single metal or alloy mostly, as zinc, cadmium, gold or brass, bronze etc.; The disperse layer is also arranged, as nickel-silicon carbide, nickel-fluorographite etc.; Also has laminating layer, as the silver on the copper-nickel on steel-chromium layer, steel-indium layer etc.The body material of electroplating, except cast iron, steel and the stainless steel of iron-based, also has non-ferrous metal, as ABS plastic, polypropylene, polysulfones and phenoplast, but, before plastic electroplating, must process through special activation and sensitization.

In order to pursue decorative effect that better plating brings and powerful functional, people have carried out a lot of research to electroplating from the configuration of method and electroplate liquid; But at present, existing technology is perfect not enough aspect finished product wear resistance, hardness, preservative property and production efficiency, and use range is narrower, can only singlely be used in respectively that metal is wanted or nonmetal on.

Mould product often adopts process for modifying surface to improve mechanical property and the work-ing life of mould now.The process for treating surface of mould mainly contains anodic oxidation, hard anodizing and application rete.Mould is carried out to anodic oxidation, although form layer oxide film on surface, this oxide film can improve the mechanical property of mould to a certain extent, but prepared oxidation film layer is thinner, less with the bonding force of matrix, surface hardness, can only be in a short period of time to its provide protection of mould generally in the 300HV left and right; And oxidation film layer prepared by hard anodizing improves than the hardness of common anode oxidation film layer, can reach 450HV, but its processing requirement is very strict, the temperature of general electrolytic solution must be controlled at below 5 ℃.The mould product field of surface coatings, extensively adopt multi-arc ion plating equipment and technology, hallow cathode deposition, HCD equipment and technology etc. both at home and abroad, preparation TiN, AIN, CrN, TiC, the coatings such as TiCN, TiAIN, because its oxidation resistance temperature is low, frictional force is large, with the reasons such as basal body binding force is little, application is restricted.

Summary of the invention

The purpose of this utility model is to provide a kind of vehicle mould coating structure for the deficiencies in the prior art, and not only wear resistance, preservative property are good, and has and can weld and hardenability.

For achieving the above object, the utility model adopts following technical scheme: a kind of vehicle mould coating structure, it comprises the vehicle mould matrix, and the vehicle mould matrix is electroplate with one deck nickel-polytetrafluorethylecoatings coatings, and the thickness of nickel-polytetrafluorethylecoatings coatings is 2.5 μ m ~ 50 μ m.

The thickness of described nickel-polytetrafluorethylecoatings coatings is 5 μ m.

The thickness of described nickel-polytetrafluorethylecoatings coatings is 10 μ m.

The thickness of described nickel-polytetrafluorethylecoatings coatings is 20 μ m.

The thickness of described nickel-polytetrafluorethylecoatings coatings is 30 μ m.

The thickness of described nickel-polytetrafluorethylecoatings coatings is 40 μ m.

The utility model beneficial effect is: a kind of vehicle mould coating structure described in the utility model, not only wear resistance, preservative property are good, and have and can weld and hardenability.

The accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, a kind of vehicle mould coating structure described in the utility model, it comprises vehicle mould matrix 1, and vehicle mould matrix 1 is electroplate with one deck nickel-polytetrafluorethylecoatings coatings 2, and the thickness of nickel-polytetrafluorethylecoatings coatings 2 is 2.5 μ m ~ 50 μ m.Preferably, the thickness of described nickel-polytetrafluorethylecoatings coatings 2 is 5 μ m, 10 μ m, 20 μ m, 30 μ m or 40 μ m.

The preparation method of above-mentioned nickel-polytetrafluorethylecoatings coatings 2 comprises the following steps:

A. pre-treatment

Unplated piece is carried out to upper extension, degreasing degreasing, washing, acid-wash activation successively;

B. electroplate

Configuration electroplate liquid: comprise staple fiber 1%～3%, nickelous chloride 20%～30%, Trisodium Citrate 5%～8%, single nickel salt 22%～30%, polytetrafluoroethylene granule 7%～20%, ethylene fluoride 1%～5%, mistake fluoroalkyl compound 1%～5%, propylene copolymer 1%～5%, octyl phenyl polyoxyethylene fan 0.1%～0.3% and the ammoniacal liquor that will count by weight percentage;

Using unplated piece as negative electrode, using the nickel plate as anode, put into above-mentioned plating solution and electroplate for some time again, form one deck coating on plating piece;

C. aftertreatment

By the finished product that the unplated piece water cleans, dry, the lower extension of the universe obtains being electroplate with nickel-polytetrafluorethylecoatings coatings of having electroplated.

The rich coating of the formed wound of the preparation method of this nickel-polytetrafluorethylecoatings coatings is by 20% PTFE(Teflon) and combine without electrolytic nickel, this coating has surface lubrication (dry friction coefficient can be low to moderate 0.04), the characteristics such as anti-stick, corrosion resistant (0.001 inch thickness of coating also can be born the SaltSprayTest that surpasses 300 hours), wear-resisting (being 14 milligrams by the abrasion loss under 1 kilogram of load of emery wheel of TaborCS-10 model), strong hardness (hardness can reach Rockwell 36-62 degree); Applicable to various steel, the base materials such as copper alloy, aluminium alloy, cast iron and stainless steel, and can not produce any negative interaction to mould; For various plastic cement, elastomeric material moulding, have very great help, especially PA, PVC, TPO,, the exotic materials such as GF (glass fibre), rubber, silica gel, epoxy resin., different from the plating of other form, the rich coating of wound is not limited in position, mould corner and the deep trouth hole site distributes, but applies at the real profile surface uniform of mould, the attrition process again that this causes with regard to the discordance of having been avoided coating; B, coating paste firmly: the rich coating of wound prevent from coming off and broken aspect have superiority very much.The plating postheat treatment, will further strengthen the attaching firmness; C, shortening shaping cycle: the dry friction coefficient of die surface had a significant impact the mould filling time, the rich coating of wound can make dry friction coefficient greatly reduce, thereby make filling speed accelerate more than 10%, be particularly useful for vehicle mould, not only wear resistance, preservative property are good, and have and can weld and hardenability.

The above is only better embodiment of the present utility model, and the equivalence of doing according to the described structure of the utility model patent claim, feature and principle therefore all changes or modifies, and is included in the utility model patent claim.

Claims (6)

1. a vehicle mould coating structure, it is characterized in that: it comprises vehicle mould matrix (1), and vehicle mould matrix (1) is electroplate with one deck nickel-polytetrafluorethylecoatings coatings (2), and the thickness of nickel-polytetrafluorethylecoatings coatings (2) is 2.5 μ m ~ 50 μ m.

2. a kind of vehicle mould coating structure according to claim 1, it is characterized in that: the thickness of described nickel-polytetrafluorethylecoatings coatings (2) is 5 μ m.

3. a kind of vehicle mould coating structure according to claim 1, it is characterized in that: the thickness of described nickel-polytetrafluorethylecoatings coatings (2) is 10 μ m.

4. a kind of vehicle mould coating structure according to claim 1, it is characterized in that: the thickness of described nickel-polytetrafluorethylecoatings coatings (2) is 20 μ m.

5. a kind of vehicle mould coating structure according to claim 1, it is characterized in that: the thickness of described nickel-polytetrafluorethylecoatings coatings (2) is 30 μ m.

6. a kind of vehicle mould coating structure according to claim 1, it is characterized in that: the thickness of described nickel-polytetrafluorethylecoatings coatings (2) is 40 μ m.