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FEATURES: Hardened and precision-ground bedways, the spindle is supported with precision taper roller bearings, gears in the headstock are made of high-quality steel, hardened and ground, speed-changing levers driven by fan-shaped gears, operating easily, safe interlock and a overload safety devices in apron, electromagnetic braking, cooling and lighting devices are supplied.
特点：床身导轨表面经淬火和精密磨削，主轴支撑采用精密圆锥滚子轴承，主轴箱内齿轮采用优质钢并经表面淬火和磨削，变速机构采用扇型齿轮传动，操作灵活方便，溜板箱设有安全互锁装置和过载保险机构，配有电磁刹车、冷却及照明装置。
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The contact fatigue strength was measured after the 20CrNi2Mo and 15CrNi6 steel used asdragging gear on quasi high speed locomotive was carburized and quenched as well as peened,com-pared with that of 20CrMnMo steel.The results shown that the contact fatigue strength limits of thesethree types of steel carburized and quenched essentially same,and the contact fatigue strength Iimit hasbeen increased by 5 porcent after peening,and that the failure appoarances of all contact fatiguespecimen were delamination ...
对20CRrNi2Mo、15CrNi6及20CrMnMo渗碳淬火齿轮及15CrNi6渗碳淬火＋喷丸处理齿轮进行了弯曲疲劳试验，介绍了齿轮试件的设计与加工、试验装置与夹具、试验方法及试验数据的统计处理，试验结果表明，20CrNi2Mo和15CrNi6渗碳淬火齿轮在R＝0.99时的σFlim分别为530MPa和375MPa，与20CrMnMo渗碳淬火齿轮相比，弯曲疲劳强度分别提高80％和27％。15CrNi6经渗碳淬火＋喷丸处理齿轮在R＝0.99时的σFlim为490MPa，比未喷丸处理者提高30％。
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Main devices of heat treatment line: step quenching and tempering furnaces, hi-pressure water descaling unit, spray quenching unit , three-roller and three-unit sizing machine of OD 550mm, hot-straightening device of OD 273mm, cold-straightening device of OD 273mm, normalizing cold-bed, pipe-body transverse and longitudinal EMI thicknesser, pipe-end MPI machine, on-line measuring/stenciling machine, sampling saw, 80Mpa hydrostatic testing machine, UT device, cutter-head and chamfering machine, painting devices.
热处理线主要设备：步进式淬火炉和回火炉、高压水除鳞装置、喷淋式淬火装置、φ550三辊三机架定径机、φ273温矫直机、φ273冷矫直机、正火冷床、管体纵横向漏磁探伤测厚机、管端磁粉探伤机、在线测长/喷印机、取样锯、80MPa水压试验机、超声波探伤机、铣头倒棱机、涂漆装置。
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reharden：再硬化 重淬火
rehandlingfacilities 转载装置 | reharden 再硬化 重淬火 | rehardenedstreak 再度硬化条纹