Abstract Typical examples of large residual capacity, heavy load and automatic belt grinding: automobile engine connecting rod end, boiler pipeline polishing, nuclear power high pressure vessel grinding and so on. Features of the grinding equipment: 1. Due to the large grinding allowance (1mm or more), the grinding equipment adopts multiple stations,...
Large residual capacity, heavy load, automatic belt grinding Typical cases: automobile engine connecting rod end, boiler line polishing, nuclear power high pressure vessel grinding, etc.
Grinding equipment features:
1. Due to the large grinding allowance (1mm or more), the grinding equipment adopts multiple stations, the combination of abrasive belt polishing and grinding wheel grinding or the interchange of abrasive belt and grinding wheel;
2. The workpiece is bulky, and the overall size of the corresponding grinding machine is also large and the quality is heavy;
3. The grinding equipment has a long working time and a bad working environment;
4. Automated polishing.
1. Automobile engine connecting rod end large amount of thinning strong and efficient belt grinding
Developed the world's first high-efficiency machine tool that uses the abrasive belt grinding process to achieve a 4.5mm margin/single-thickness of the constant-thickness rod end. The grinding end face grinding precision can be stably controlled within ±0.03mm. The machine's CPK process capability index is 2.33 (CPK ≥ 1.67 is a special grade). The result was first put into use in the Shenlong Automobile Xiangfan factory, and was later adopted as the main equipment by Shanghai Diesel Engine Factory and Nanyang Hongyang Machinery Factory.
2. Boiler pipeline abrasive belt grinding
There are a total of 5 grinding heads. The first two grinding heads are grinding wheels, which remove the surface oxide scale and remove the remaining amount of 5 wires; the last three are abrasive belt grinding heads. The particle size of the abrasive belt is 36#, 80#, 120#, and the surface roughness Ra≤1.65μm; the pass rate of the pipeline is 60c/o~70 c/o, and it is increased to 90 c/o or more after polishing.
3. West-East Gas Transmission Spiral Steel Pipe Weld Strong and Efficient Belt Grinding
It solved the problem of relying on the manual grinding of the weld height in the past, satisfies the needs of the domestic West-East Gas Pipeline Project, and was named one of the three innovation technologies of 2003 by the petrochemical industry. The results were subsequently adopted by Ziyang Steel Pipe Plant, Baosteel, Zhongyuan Steel Pipe Plant, Qingxian Huayou Steel Pipe Company, Julong Steel Pipe Co., Ltd., Xiyulong Steel Pipe Company, Panyu Zhujiang Steel Pipe Company, etc. as the main equipment, after the grinding The maximum error of seam height and base metal is ≤0.05mm, and the surface roughness of processing is Ra≤0.2～0.4 μm.
4. High-efficiency precision belt grinding of weld bevel and surfacing layer of nuclear power high-pressure vessel
The result was first officially put into use in the Dongyang Boiler Factory Deyang Factory in June 2008. The series of intelligent and efficient grinding equipment developed based on this result has been reloaded by Dongfang Headquarters and Shanghai Lingang, double and heavy. Wuhan Alstom (Wuguo), Japan Sensong, India Laesen & Toubro and other companies use, the technology can clean the maximum depth of the root: 170mm, grinding line speed: 82m / s, the maximum depth of a single grinding: h ≤ 15mm , the maximum amount of single grinding: ≤ 100 × 5mm, the maximum remaining amount of surfacing layer grinding: ≥ 0.5mm / time, grinding efficiency: 10 ~ 20m2 / h, grinding Ra ≤ 6.3 ~ 0.2μm.
200mm (8 Inch) Flat Cut-off Disc
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