Generally speaking, the following identification experiences for auto parts products are relatively practical:

I. Consumers Should "Five Views"

1. Looking at the trademark, we should check the trademark carefully. Whether the above factory name, factory address, grade and anti-counterfeiting label are true or not is because it is not easy for the stomach counterfeiters who have short-term behavior to make anti-counterfeiting labels. It requires a lot of expenditure. In addition, in the production of commodities, regular manufacturers have hard and chemical stamps on the surface of spare parts, indicating the number, type, type, and type of parts. The date of leaving the factory is usually printed automatically, the letters are arranged neatly, the handwriting is clear, small factories and small workshops are generally unable to do so.

2. Look at the packaging, automotive spare parts have strong interchangeability and high accuracy. In order to keep them in storage for a long time without deterioration and stainless corrosion, low-acid grease should be applied before the products leave the factory. Regular manufacturers also have strict requirements for packaging boxes, requiring no acidic substances, no chemical reactions, and some use rigid transparent plastic vacuum packaging. Exquisite packaging can improve the added value and value of products, boxes and boxes mostly use anti-counterfeiting marks, commonly used in the purchase of accessories, such as laser, bar code, stencil, these are very important.

3. Looking at the documents, consumers must check the copy list of auto parts. The copy list is to further publicize the products to the users by the manufacturer, to give them some hints, and to help them use the information of the products accurately. The product imitation list can enhance the user"s trust in the product. Generally speaking, each part should be accompanied by a copy of the product list (some manufacturers with user instructions). If the volume of trade is considerable, it is also necessary to inquire about import accessories of technical identification data and customs declaration information. The state stipulates that imported commodities should be accompanied by Chinese instructions. Some counterfeit imported accessories generally do not have Chinese instructions, and the foreign language on the packaging, some grammar is not clear, or even wrong words, can distinguish the true from the false at a glance.

4. Identify metal machinery parts, you can see the surface treatment. The so-called surface treatment, namely, plating process, paint process, welding process, high-frequency heat treatment process. Surface treatment of automotive parts is the back-end process of parts production. The back-end process of commodities, especially surface treatment, involves many modern science and technology. International and domestic famous factories have invested a lot of money in improving the technology of their predecessors. Especially, they pay more attention to the technology of the back road. The investment of less capital is millions of yuan, and more is tens of millions of yuan. Some small factories and handicraft workshops that manufacture fake and inferior products have a common feature, that is, they adopt short-term operation with low investment and grab. They seldom invest technology and capital in the back-end process of products, and they do not have the ability to invest such capital.

Surface treatment can be considered from the following aspects:

1) Galvanizing Technology and Electroplating Technology

Zinc plating process accounts for a large proportion of surface treatment of automotive parts. Generally, surface galvanizing is used for iron castings, forging castings, steel castings, cold and hot plate stampings, etc. The quality of galvanizing is not external, the surface consistency is very poor; the galvanizing process passes through, the surface consistency is good, and the consistency between batches has not changed, there is continuity. A clear-eyed person can tell the good from the bad at a glance.

Other aspects of electroplating, such as black plating, yellow plating, etc., large factories in the pre-plating treatment of rust removal pickling process is more stringent, clear acid is more thorough, these processes depend on whether there is pan-bottom phenomenon. Molybdenum plating, chromium plating and nickel plating can be judged by the average of the coating, plating volume and plating surface, so as to distinguish the good from the bad.

2) Paint Technology

At present, electro-impregnating paint and electrostatic spraying paint are generally used, and some of them also use vacuum means and high-grade electrostatic spraying paint room. The surface of parts produced by advanced technology is greatly different from that produced by old and backward technology. Visually, we can see that the former has a delicate surface, luster and bright color, while the latter is dim and dull, with bubbles and "runny nose" on the surface. It feels like sand grains with hands. By comparison, the truth and falsity are very distinct.

3) Welding Technology

In automotive parts, shock absorbers, steel rings, front and rear axles, beams, body and so on all have welding procedures. Auto factories with high degree of specialization mostly adopt automatic welding technology, which can quantify, fix temperature and speed. Some also use low temperature welding method to improve the cleanliness and average thickness of the weld seam of their predecessors. The surface has no corrugation and good linearity. Even spot welding, the welding joints and welding spacing are also regular, which is not even the best manual operation. Law does.

4) High frequency heat treatment process

Automotive parts are hardened by high frequency quenching after finishing, so all kinds of colors remain intact after quenching. If the inside and outside ball cages of automobile universal joints are quenched, there will be obvious black, blue, yellow and white. The white surface is the friction surface and the hardest surface. Visual inspection, which is all black and colorless, is certainly not high-frequency quenching.

5. Look at the surface scars on non-use surfaces

It can also be distinguished from the scars on the non-use surface of auto parts that are produced by regular factories. Surface scars are caused by the collision of products in the intermediate process. High-quality products are manufactured by improving the scientific management of the predecessors and improving the technology of the predecessors. It takes dozens or even hundreds of processes to produce a part, and each process should be equipped with process equipment.