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Prior to the development of the slow-pit technology with burners, the existing technology has a certain impact on the output and quality of rolling steel. In order to improve the scale efficiency of rolling steel, this year the company set up a key scientific research team to organize scientific research forces to carry out high-tech research, so that the project A major breakthrough was made to fill the domestic gap.
The technology content of the slow cooling pit with burner is very high. The use of the electric translation type pit cover makes the whole process of lifting steel from the pit to the cover seal complete in 60 seconds, which smoothly realizes the rapid entry and exit of the steel. The process requirements of the pit. After the production of the furnace, the slow cooling pit with the burner can play a flexible buffering effect on the production of the high alloy steel of the whole company. It can fully utilize the annealing capacity of the heat treatment plant and alleviate the production capacity of the new alloy steel high alloy steel. The contradiction of the annealing ability mismatch. Since then, the second rolling mill of Xinye Steel can form a process capability of producing 1000 tons of high-alloy steel at one time, which can create better economic benefits for enterprises.
In the silicone industry, to meet the user experience of the majority of consumers, multi-color products have always been the best-selling products, the process is used in silicon materials bonding and plastic bonding.
1. Soft and hard plastic two-color design
The two materials must have a certain temperature difference in the melting point. Generally, it is recommended to reach 60°. It is recommended to be at least 30°. The melting temperature of the first shot material is high. Generally, the first shot is PC or PC/ABS, and the second shot is TPU or TPE, PC thickness is 0.6-0.7mm, soft rubber part thickness is required to be 0.4mm or more.
Try to widen the contact area, make grooves to increase the adhesion, or use the core for the first shot, and the second part of the material is injected into the first shot. The surface of the first shot is as rough as possible.
2. Material compatibility
Multi-color injection molded mating materials must meet two basic compatibility conditions. They are compatible with the adhesive compatibility and processing.
3. Transparent and non-transparent two-shot design
(1) Double shot design of small lenses
The first shot is non-transparent, and the second shot is made of a lens. The first shot uses a PC with a high melting point and the second shot uses a PMMA.
(2) Transparent and non-transparent bijective design for decoration
The first shot is a non-transparent material, the second shot is a transparent material, and the non-transparent material is generally a high temperature of the PC material of SABIC, and the second shot transparent material is PMMA or PC. The PC needs to be sprayed with UV to protect it. PMMA can choose uv or fortification. If there are characters on the surface, you must choose UV
In the silicon bonding area, several silicon materials will be used to achieve different color silicon, different rubber components, so the multi_k color process is commonly used and is quite popular.
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