Don't neglect the spraying process when choosing automobile sheet metal parts

2019-09-18 08:50:01

In order to distinguish the quality of automobile sheet metal parts, we can start with packaging, weight, welding process, painting process and the degree of coincidence when loading. It is very difficult for ordinary car owners to distinguish whether the sheet metal parts are of high quality after handing in the car. They may as well distinguish them from the packaging of the products in advance. Generally, the products produced by small factories will not print the contact information and the factory address, but the products will also have steel stamps, qualifications and test labels, even if consumers use them in the future. When problems arise, there can also be a way to safeguard rights.

Product weight is one of the inspection standards to measure the quality of sheet metal parts. In order to ensure the safety of automobiles, the steel plates used in automobile sheet metal parts must reach a certain weight. The weight of the original sheet metal parts and the high quality by-products should be almost the same, and if the sheet metal parts you buy are one third lighter than the original sheet metal parts, then you will undoubtedly buy a small factory product. As for welding technology, it is also a way to distinguish whether sheet metal parts come from large factories or not.

Sheet metal parts manufactured by regular manufacturers will adopt mechanical cutting and welding operation mode. Their solder joints or trimming edges are smooth and smooth, and will not leave rough cutting edges.

Many car owners believe that the same color of car paint is needed after the sheet metal parts are sprayed, so the spraying process of sheet metal parts will be neglected in the selection of sheet metal parts, thinking that it is not important, but this idea is incorrect. In order to prevent oxidation and rust, sheet metal parts need to be sprayed before they leave the factory.

Indeed, the spraying links after replacing sheet metal parts can not only tone their colors, but also protect and prevent oxidation. But if the sheet metal parts in small factories are sprayed with uneven adsorption and foaming during production, it will affect the effect of post-spraying paint and lead to its easy falling off in the process of use. It causes rust, affects and destroys the quality of sheet metal parts.

In the cable disc, the appearance of the socket, the material used in the panel, the number of sockets and so on all determine the quality of the whole disc, as well as the use effect, but it is the copper sheet inside the socket that really determines the power-on situation and plays a role. Elastic copper sheet with good quality and thicker texture is the best choice. Good socket copper sheet is the key part to avoid fire hazards.

Some inferior points on the market are broken. Most of the copper sheets are ordinary brass, whose thickness is generally below 0.4mm, and the surface of the copper sheets has not been treated safely. It is easy to be oxidized and corroded, heat distortion and poor toughness in long-term use, resulting in poor contact between plugs and sockets. When power is on, it needs to be plugged repeatedly to ensure that the contact is in place, and loosening may occur after plugging, which will affect the normal use of electricity.

Phosphorus bronze is used in high-quality cable tray. Its thickness can reach 0.5 mm. The surface of copper sheet is also treated by nickel plating. It has strong elasticity, excellent corrosion resistance and oxidation resistance, good thermal conductivity, and is not easy to loosen, which reduces the possibility of fire.

In addition, for sockets, in addition to the material of copper sheet, the thickness of copper sheet is also an important consideration. Thicker pure copper sockets have the following advantages: strong toughness and durability, not easy to deform; suitable for long-term multiple plugging, socket and socket contact is good, close connection; thick copper, can improve the current through capacity, reduce the resistance of copper parts; thick copper parts, anti-oxidation, rust-free, not easy because of copper parts. Corrosion increases resistance and heat. It can be said that a good socket, the decisive role is the quality of the socket.

At the same time, the material of socket panel is also an important link to determine the service life of cable disk, because sockets need to be used for a long time. Under the condition of frequent power-on, high temperature will cause the inferior panel to melt, affecting the normal use of cable disk.