Top ten forging die surface treatment technology necessary for mould man

Forging die surface strengthening and modification technology can be used as a system to design the die surface and the substrate as a whole system. The comprehensive use of the surface strengthening modification technology and the coating layer technology makes it difficult to obtain the surface material and hopefully has a specific performance. . The processing technology that uses modern technology to change the surface, subsurface layer composition, structure and properties of the forging dies is called surface modification technology and mainly includes the following ten categories:

1. Electrochemical conversion

The technique of forming an oxide film on the surface of a part in an electrolyte solution and an external current is called an electrochemical modification technique. Electrochemical conversion modification techniques are also often referred to as anodization or anodization in engineering. Recently, a major exhibition of electrochemical conversion technology is micro-arc plasma anodization, which can significantly increase the surface hardness or form a new type of color decorative film layer, which has a good application in the mold industry.

2. Surface formation becomes intensified

The use of shot peening, extrusion, laser shock, rolling, ultrasonic impact, vibration impact, high pressure jets, etc., causes the surface layer of the material to undergo elasto-plastic deformation, introducing residual compressive stress and resulting in changes in the microstructure of the microstructure. The material's resistance to fatigue and corrosion resistance enhances the stability and durability of the part.

3. Surface transformation hardening

The surface of the material is rapidly heated by electron beam, laser beam, etc., so that the surface and subsurface are formed with new phase change regions and surface enhancement amounts, thereby obtaining a special performance surface layer having a fine structure and a strengthening phase.

4. Ion implantation

The ionized ions in the vacuum system are accelerated at high voltage and directly injected into the surface of the material to form a very thin ion-implantation layer, which changes the composition and structure of the surface of the material and improves the surface properties of the material.

5. Organic and inorganic coating technology

Organic coating technology mainly refers to the use of paints (paints, paints, pigments, thinners) to give the parts a special surface protection, decoration and flame retardant, temperature display and other functions.

Inorganic coating technology forms an inorganic coating or surface film on the metal surface. The inorganic coating or surface film has a specific chemical composition, structure, and morphology that can impart new properties or functionality to the substrate and coating system.

6. Surface alloying (diffusion)

The metal or non-metal is deposited on the surface of the base material, penetrates into the surface of the base material by diffusion, and changes the chemical composition and phase structure of the material surface to improve the performance of the material surface.

7. Chemical transformation

The metal parts are placed in a certain chemical solution medium to form a passive compound film layer on the surface to improve the performance of the material surface. Commonly used in the engineering of passive film layer chromate passivation film, phosphate passivation film, oxalate passivation film, steel parts surface blue and so on. In addition, the surface roughness reduction process (polishing, polishing, rolling, etc.) and surface coloration are often attributed to the surface modification process of chemical conversion in engineering applications.

8. Metal Electrodeposition Technology

Metal electrochemical deposition refers to the technique of electrochemically depositing one or more metal platings, alloy platings, or composite platings on the surface of metal parts, also known as electroplating technology. With the electroplating method, various plating layers having various functions can be prepared on the surface of the metal parts.

9. Anti-rust technology

The chemical or electrochemical changes that occur in metals under the influence of environmental media are called metal corrosion, commonly known as rust or rust. Anti-rust metal is a technology that prevents corrosion of metal during manufacturing, handling, transportation, storage, and use.

10. Hot dip coating technology

Hot-dip coating technology, also known as hot-dip plating, is a process technique in which a metal-plated material is immersed in other liquid metal or alloy having a lower melting point to form a plating layer. The hot dip coating technique is characterized by forming an alloy layer between the base metal and the plating metal.

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