how to judge the quality of track roller?

Supporting wheels are the key components of bulldozers with four wheels. The quality of supporting wheels is directly related to the stability of bulldozers and the working performance of the whole machine. So, how to identify whether the quality of supporting wheels in the spare parts market has passed the customs?            First, material           

 1.If you have experience in manufacturing, you should pay attention to the material grade, which steel mill, steel management, see if the steel inspection report meets the requirements. There are two kinds of requirements: one is the national standard (the most common), the other is the internal control standard of the manufacturer, in order to stabilize the heat treatment of the product, narrow the range of chemical composition of the steel and make it easy to control.            

2. If you are Xiaobai, you should pay attention to the material, whether it is round steel or square billet, and ask which steel mill is next.          

Second, welding procedure            

1.Have manufacturing experience to see the process, to see whether the parameters of the equipment are consistent with the process, if not, the quality control ability is poor, to see whether there are control requirements for the parameters, how to ensure that, in practice, do not see the cutting.           

2. If you are Xiaobai, then you can skip it, find a slice, pretend to do a sample study, see if there are any obvious appearance defects in the weld, and ask if the weld can be detected.            

Third, heat treatment process            

With manufacturing experience, we can see whether the whole heating surface hardening or medium frequency hardening is adopted. We can observe the consistency between process parameters and process setting, the frequency of self-checking items, whether they are carried out, whether there are random checking records of quenching liquid, heating temperature and flow rate, whether there are checking records, and whether there are cutting blocks.            

Fourth, Machining and Assembly Processes            

1.Experience in manufacturing: Watch the quality control process on site, whether there is a blind area for quality control, as well as the execution and exception handling process and execution, and some inspection means, whether there are enough supporting inspection means and instruments.           

2. If you are a new beginner: Look at the basic product processing inner hole roughness, not bright, whether the site assembly is orderly, clean, cleanliness also has a great impact on product quality, whether there are inspection and assembly operating standards, pay attention to the side management level and the size of the strength of the manufacturer.           

These are just the most basic concepts, which are only for some agents or large demand will go to the manufacturer to inspect.           

Personal computer owners (one or two) usually buy accessories stores, or on-line sporadic online shopping, the owners of the brand of heavy wheels are seldom guided by accessories storekeepers, online procurement is price-sensitive, because resources are not enough, can only find the right feeling, the choice is not big.           

Personal computer owners (with more mainframes) generally have a stable channel for picking up goods, depending on the trust generated by multiple cooperation. They do not know much about the brand of the branch ships, but also rely on the guidance of accessories stores or maintenance factories. These vendors can accurately grasp the needs of customers.