In the production process of bearings, the most important links are as follows
The forging process is an important link to ensure the reliability and service life of bearings. After the raw material is forged, the bearing ring blank is formed. At the same time, the raw material structure becomes denser and the flow linearity is better, which can improve the reliability and service life of the bearing. In addition, the quality of the forging process will directly affect the use of raw materials and have an impact on production costs.
Heat treatment is the high-temperature treatment of the bearing ring after forging. It directly affects the carburizing uniformity of the bearing ring, whether it can improve the wear resistance and hardness of the bearing, and is also an important link that affects the reliability and service life of the bearing.
The bearing ring after heat treatment also needs to be ground, which is an important part to ensure the accuracy of the bearing. After grinding, the production process of the bearing ring is basically completed.
Bearing inner and outer ring technological process: material selection - forging - turning - heat treatment - grinding - ultra-finishing - final parts inspection - anti-corrosion storage
The main production equipment includes: cold rolling mill, automatic ball bearing line.
internal grinding machine, hardening, annealing furnace, press machine, CNC lathe, bearing grinding machine, inside and outside groove grinding machine,
High-precision horizontal spindle grinder, inclined table surface grinder, CNC milling machine, high-temperature and high-speed bearing testing machine, heat treatment production line and quality inspection equipment
The main production process of rolling bearings
Due to the different types, design types, tolerance classes, specifications, materials and batches of rolling bearings, the basic production process of rolling bearings is not exactly the same.
Processing technology of various main bearing parts:
Ring processing: the processing difference of the bearing inner ring and the outer ring varies according to the difference of raw materials or workpieces, including automobile pre-treatment technology can be divided into the following three: the whole process is: material selection or pipe (some materials need forging, annealing, normalizing) - turning, heat treatment, grinding or polishing of parts - final inspection - anti-rust - storage.
The steel ball processing technology varies according to the raw material. The steel ball cutting technology includes the following three types. The pre-heat treatment process is divided into the following two types. The whole process is: steel bar or steel cooling (some need to be annealed after cooling), sharp cutting , coarse grinding, hard or soft ball grinding - heat treatment - grinding, fine grinding, grinding and grinding - final inspection - rust prevention, packaging, storage
According to the different raw materials, including the heat treatment process, the roller processing technology can be divided into the following two types: stringing and soft grinding after cold heading, heat treatment, soft point series, rough grinding, rough grinding end to - end face diameter fine grinding - end face diameter fine grinding Grinding - face diameter grinding - rust prevention, packaging, storage (assembly).
Depending on the design and raw material, processing can be divided into the following two categories
Sheet metal → blanking → stamping → stamping forming → forming processing → pickling or shot blasting → final inspection → rust prevention, packaging → storage (assembly)
Processing technology: processing technology according to the difference in raw materials or quality, before processing includes: bar, pipe material, forging, casting, inner diameter, outer diameter, facing, chamfering, drilling (or pulling holes, boring), pickling, final inspection, anti- rust, packaging, warehousing
Rolling bearing assembly process
Rolling bearing parts, inner ring, outer ring, rolling housing and cages, must be assembled in the assembly shop after passing inspection. The process is as follows:
Parts degaussing and cleaning → inner and outer roller
In order to increase the competitiveness of the company's products, we have applied bainite quenching technology to the production of all products, which has fundamentally improved product quality and provided customers with more competitive precision bearings.