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Enterprise name: Zongsheng Precision Mould Co., Ltd. 

Contact: Mr. Nie 13923298099 (Wechat same number). 

Miss Jia 15820657628 (Wechat same number). 

Tel: 0757 2226 9630. 

0757 color 22269276. 

Email: 261909968@qq.com. 


Fax: 0757 2226 9631 22269276. 

Web site: en.fszongsheng.com. 

Add: no. 1, Rongye 6 road, Fengxiang industrial zone, Daliang, Shunde district, Foshan city, Guangdong province

Laser Welding Technology of Professional PET injection Mould

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Laser Welding Technology of Professional PET injection Mould

Release date:2019-05-14 Author: Click:

Laser welding: laser welding equipment can be used to repair the mold or cladding metal layer to add the wear resistance of the mold. After laser cladding, the hardness of the outer surface of the mold can reach 62HRC. The micro-welding time is only 10ml / 9s, so the heat transfer to the area near the solder joint can be avoided. General laser welding process is selected. 

The temperature from the 15mm to the solder joint can reach 150 ~ 200C at work, while the temperature is only 36C when the micro-welding technique is selected. This will not cause changes in the metallographic arrangement and function of the data, nor will it cause warping deformation or cracking ratio and problems. EDM milling: also known as EDM generation skills. The plastic bottle embryo mold uses a simple tubular electrode with high-speed rotation for two-dimensional or three-dimensional general processing, so it is no longer necessary to make messy molding electrodes.


Three-dimensional micro-machining (DEM) skills: DEM skills overcome the shortcomings of long processing cycle and high price of LIGA skills, and summed up three primary processes: deep etching, micro-electroforming and micro-replication. 

You can generate moulds for micro parts such as gears with only 100um thickness. 

Three-dimensional cavity fine forming and mirror EDM processing integrated skills: professional PET injection mold choose the method of adding solid fine powder to ordinary kerosene working fluid to increase the distance between poles of finishing, reduce electro-pneumatic effect, increase the dispersion of discharge channel, and then make chip removal good, discharge stable, processing efficiency improved and effectively reduce the roughness of the machining appearance. 

The powder mixing working liquid can also be used together to form a coating with high hardness on the surface of the mold workpiece, improve the hardness and wear resistance of the mold cavity, treat and strengthen the mold appearance in order to improve the life of the mold, in addition to conventional heat treatment methods, the following are some commonly used mold appearance treatment and strengthening skills, chemical treatment, its development trend is from single element to multi-element, to multi-element co-infiltration, compound infiltration, 

From general diffusion and diffusion to chemical vapor accumulation (PVD), physical and chemical vapor accumulation (PCVD ratio and ion gas phase accumulation).


Ion entry, ion implantation ratio and direction to develop laser surface processing: 1 the use of laser beam to achieve a very high heating speed to complete the surface quenching of metal data. The professional injection cover mold obtains high-carbon very fine martensite crystals on the outside, and the hardness is 15% to 20% higher than that of the conventional quenching layer, while the core arrangement will not change. 2, the surface hardened layer with high function can be obtained by laser remelting or alloying. 

For example, after unalloyed with CrWMn composite powder, its volume wear is 1 × 10 of that of quenched CrWMn, and its service life is increased by 14 times. 3. Laser melting treatment is a quenching treatment arrangement in which the surface of the metal is melted by a laser beam with high energy density, so that the outer surface of the metal forms a layer of liquid metal. Because the outer surface is heated and cooled very quickly, the arrangement is very fine. If the cooling rate is high enough through the external medium, the crystallization process can be restrained and the amorphous state can be formed. 

Therefore, it is also known as laser melting-amorphous treatment, also known as laser glazing. 

Appearance strengthening of rare earth elements: this can improve the surface structure, physical, chemical and mechanical functions of steel, etc., it can increase the infiltration rate by 25% to 30%, and shorten the treatment time by more than 1%. 

The common ones are rare earth carbonitriding, rare earth carbonitriding, rare earth boronizing, rare earth boron aluminizing and so on. 

{{Electroless plating: the Ni P B, in the solution is recovered and precipitated on the surface of the metal by chemical test, and then the alloy coating of Ni-P, Ni-B, etc., is obtained on the surface of the metal. 

In order to improve the mechanical function, candle resistance and process function of metal, it is also known as autocatalytic recovery plating, non-electroplating and so on. 

Nano appearance processing: based on nano data and other low-dimensional non-equilibrium data, through specific processing skills, based on solid appearance data, through specific processing skills, a skill that strengthens or gives a new function to the appearance of a solid. 

The main results are as follows: (1) the nanocomposite coating is formed by adding zero-dimensional or one-dimensional nano-particle powder data in the traditional electroporation solution. 

Nano-materials can also be used for wear-resistant composite coatings, such as adding n-ZrO2 nano-powder data to NI-W-B amorphous composite coatings, which can improve the oxidation function of the coating at 550ml 850C, increase the corrosion resistance of the coating by 2 to 3 times, and significantly improve the wear resistance and hardness of the coating. 

(2) the nanostructure coating has significant improvement in strength, toughness, corrosion resistance, wear resistance, thermal fatigue resistance and so on, and one kind of coating can have the above functions together. 

Rapid prototyping and rapid prototyping is an important skill in new product development. 

People have always thought that rapid molding is limited to small batch trial production, but in recent years, rapid molding also uses medium or even large quantities. The spray molding process of quasi-durable metal mold is to form a metal spray layer on the surface of the prototype, then reinforce the spray layer, and remove the spray to get the metal mold, using high melting point spray data can make the mold appearance hardness up to 63HRC.


The direct and rapid manufacturing methods of metal mold (DRMT) mainly include: selective laser sintering method (SLS) with laser as heat source, laser melt deposition method (LENS), with plasma arc as heat source, (PDM), spray forming three-dimensional printing (3DP) method and metal sheet LOM skills, etc., the precision of SLS molding has been improved. 

The shrinkage has been reduced from 1% to less than 0.2%. Although the density and mechanical function of the parts made by LENS are much better than those made by SLS, the porosity is still about 5%. It is only suitable for making parts or moulds with simple geometric shapes, and the appearance quality is not too high due to the bonding of unmelted particles. 

The shape stacking method (SDM), uses the welding principle to melt the welding material (filamentous), and relies on the thermal spraying principle to make the ultra-high temperature droplets accumulate layer by layer to complete the interlayer metallurgical combination, which can avoid the side step effect of the above RT skills based on the principle of stratification method, resulting in low precision, poor appearance quality, low inductive mechanical function and so on. 

The rapid molding skill occurs and develops in the competition with the traditional machining skills, but the milling speed is as high as 100.000 rpm, and the high-speed milling skill with high appearance precision has become the biggest competition of DRMT skills.

URL of this article:http://en.fszongsheng.com/news/420.html

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Foshan Shunde Zongsheng Precision Mould Co., Ltd. 

Tel: 0757 Tel: 22269630 / 13923298099 (Mr. Nie). 

Web site: www.fszongsheng.com. 

Add: no. 1, Rongye 6 road, Fengxiang industrial zone, Daliang, Shunde district, Foshan, Guangdong

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