08钢滚针轴承保持架的回火工艺.pdf

ISSN 1000- 3762 20081 13- 16 CN41- 1148/TH Bearing 2008, N . 1 工艺与装备 08钢滚针轴承保持架的回火工艺 陈永禄, 洪丽华, 张彩峰 ( 福建工程学院 材料科学与工程系, 福州 3500 14) : 08( ANCT) , , 180~ 300 , , : ANCT 850 750 620 , 18. 5 L /m in, 5 mL /m in, , 250~ 300 , , 8m 26. 3 m, 6. 3 m, : ; ; ; ; ; + + : TH 133. 33 3; TG 156. 5; TG156. 8 2 : A : 1000- 3762( 2008) 01- 0013- 04 Tem pering P rocess for N eedle R oller B earing Cage M ade of 08 Steel CHEN Y ng- lu, HONG L i- hua, ZHANG Cai- feng ( C llege fM aterial and Engineering, Fujian Un ivers ity f T echn l gy, Fuzh u 350014, Ch ina) A bstrac t: In rder t elmi inate the defects f need le r ller bearing cage after gas s ft nitrid ing, tempering is perf rm ed at 180~ 300 , based n early expermi ents f austenitic area s ft n itriding. W ith the aids f m icr structure bservati n and m icr - hardness m easurem ent, the influence f tem pering pr cess n the m icr structure and m icr - hardness is analyzed. The ptmi al heat treatment pr cesses are as f ll w s: the ANCT tem perature in the three areas is 850 , 750 and 620 , amm n ia fl w is 18. 5 L /m in, ethan l dr p is 5 mL /m in, il quench ing and tem pering at 250 ~ 300 , water- c led. A fter the treatm ent, the average th ickness f the wh ite lay er and m artensite layer are 8m and 26. 3m respectively, the average size f c re grains is 6. 3m, m eeting the dem and f the surface w ear resistance. K ey w ord s: need le r ller bearing; cage; tem per; nitr carburized; m icr structure; m icr hardness 0810 , , ANCT () , [ 1- 2] , , 08