This problem is essentially the same type of problem as "insufficient impact strength". Heavy trucks have a great impact during braking. If the impact strength of Other Transmission Components cannot meet the required indicators, it is easy to break. In addition, if the inner arc radius of the brake pad does not match the outer arc radius of the brake shoe, the brake pad may break, or the inner arc radius of the lining may be larger than the outer arc radius of the brake shoe, resulting in warping at both ends. In this case, it is also easy to break.
Loose surface means that starting from the surface of the product, the density of the material is inconsistent, and some places appear loose. If you do a physical inspection, you will find that the hardness of the surface is different from that of other parts. The reason is that bubbles are formed during the hot pressing process or the raw materials are not evenly mixed. Products with loose surface defects are unqualified products and cannot be transported. In use, it will affect the braking distance and generate noise.
3. "Abnormal brake sound" of Other Transmission Components
There are many reasons why Other Transmission Components make abnormal sounds when braking. One of them is that during the braking process, the natural frequency of the parts composed of brake shoes, brake pumps and brake accessories will appear. point. Noise point In addition, if the original Other Transmission Components has no noise, but the Other Transmission Components purchased on the market makes noise, it can be determined that the product formula is not suitable.
4. "Surface particles" of Other Transmission Related Parts
If it is not a large-particle friction material used in a special personalized formula, the particles will appear on the surface of the product, and the distribution is uneven, it can be determined that the product is caused by uneven mixing during the manufacturing process or foreign matter falling during the hot pressing process.
5. "Wrong hole position" of Other Transmission Related Parts
When riveting heavy-duty Other Transmission Related Parts, after inserting the rivets into the first few holes, if it is difficult to insert the rivets into the last few holes, or the rivets can only be inserted after inserting or knocking with a large external force, it indicates that the hole position of the brake pad is incorrect, and stress concentration will be generated on the material of the hole after rigid riveting. Due to the poor toughness of the material, brittle cracks often appear after multiple braking.
6. "Irregular aperture" of Other Transmission Related Parts
When riveting heavy-duty truck Other Transmission Related Parts, if the Other Transmission Components manufacturer finds that the diameter of the Other Transmission Components is irregular, it means that there are quality problems with the Other Transmission Components. Due to the irregular hole diameter, after riveting the brake pad, the inner diameter of the hole and the outer diameter of the rivet will not match evenly, and the contact area between the rivet head and the friction material part will become uneven, and brittleness will also occur after several braking.