Copper screws and aluminum screws processing attention

Due to the conductivity of copper screws and aluminum screws, excellent heat dissipation, so widely used. But in the domestic few factories are engaged in the copper screws and aluminum screws special processing.Shenzhen Qiangtuo Fastener factory as a professional engaged in non-standard screws, special screws of processing plants, has many years experience in processing. We are willing to share many years of experience in this aspect, to jointly promote the  special screw processing level of the industry, to participate in the international struggle .

Above all making copper wire and making steel wire craft principle is about the same, basically buying copper wire rod and aluminium wire rod to have certain order l, "no order ,no inventory".Secondly,  attention pls, copper and aluminum material  is very soft, aluminum chip and copper chip are very easy to stick in the mold cavity caused by product scratches, aluminum best can  put a break time to produce oxide film on its surface, so as to reduce the probability of sticky mold.In addition to the production of aluminum surface spray (solid, powder,) lubricant, as far as possible to reduce the phenomenon of sticky mold.In the end, no matter how hard you try, you can not completely guarantee the mucous membrane, so you can only be one person at a machine to watch the production, the emergence of sticky mold immediately stop to remove the aluminum scrap and then re-production.

Non-standard screws acceptance method

Product quality  must be in strict accordance with the corresponding standards of production acceptance, acceptance standards for non-standard screws are as below steps.

Firstly, non-standard screws are also the evolution of the national standard screws, but also according to the national standard screw surface defect standards, determine the specific test items, this specific please refer to the corresponding national standards, if the surface coating, coating effect on the identification of surface defects, should be removed before the inspection.

Secondly, according to the requirements of the design drawings for the non-standard screw shape size and material inspection, this should pay attention to the material inspection,  material certificate which raw material manufacturers provide. High-end products must be SGS material certification, and sent to the relevant laboratory for material composition analysis, to confirm whether the composition content meets the drawing material requirements.

Thirdly,Non-destructive inspection is required for the function again. If quenching cracks, supporting surface and wrinkles below any part are found during the non-destructive inspection of non-standard screws, and whether the coating conforms to RoSH environmental protection requirements, etc.

At last, it is destructive inspection, such as non-standard screw hardness level to do the corresponding hardness impact test;Internal hardness, mechanical properties, torsion test and so on this will damage non-standard screws, but the screw factory with a strong sense of  is  a necessary factor to  do testing projects.