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閥桿在閥門啟閉過程中不但是運動件、受力件,而且是密封件。同時,它受到介質的沖擊和腐蝕,還與填料產生摩擦。因此在選擇閥桿材料時,必須保證它在規定的溫度下有足夠的強度、良好的沖擊韌性、抗擦傷性、耐腐蝕性。閥桿是易損件,在選用時還應注意材料的機械加工性能和熱處理性能。

閥桿常用的材料如下

tonghejin

yibanxuanyongpaihaoyou qa19-2、hpb59-1-1。shiyongyugongchengyalixiaoyudengyu 1.6mpa、wenduxiaoyudengyu 200℃ dediyafamen。

tansugang

yibanxuanyong a5、35 gang,jingguodanhuachuli,shiyongyugongchengyalixiaoyudengyu 2.5mpa deanfa,shui、zhengqidengjiezhidedi、zhongyafamen。a5 gangshiyongyuwendubuchaoguo 300℃ defamen;35 gangshiyongyuwendubuchaoguo 450℃ defamen。(zhu:shiluxianzhengming,fagancaiyongtansugangdanhuazhizaobunenghenhaodijiejuenaishiwenti,yingbimiancaiyong。)

hejingang

yibanxuanyong 40cr、38crmoa1a、20crmo1v1a dengcailiao。40cr jingguodugechulihou,shiyongyugongchengyalixiaoyudengyu 32mpa、wenduxiaoyudengyu 450℃ deshui、zhengqi、shiyoudengjiezhi。38crmoa1a jingguodanhuachuli,nengzaigongzuowendu 540℃ detiaojianxiachengshou 10mpa deyali,changyongyudianzhanfamenshang。20crmo1v1a jingguodanhuachulinengzaigongzuowendu 570℃ detiaojianxiachengshou 14mpa deyali,changyongyudianzhanfamenshang。

buxiugang

yibanxuanyong 2cr13、3cr13、1cr17ni2、1cr18ni12mo2ti dengcailiao。2cr13、3cr13 buxiugangshiyongyugongchengyalixiaoyudengyu 32mpa、wenduxiaoyudengyu 450℃ deshui、zhengqiheruofushixingjiezhi,keyitongguoduge、gaopincuihuodengfangfaqianghuabiaomian。1cr17ni2 buxiugangfa、diwenfashang,nengnaifushixingjiezhi。1cr18ni9ti、1cr18ni12mo2ti buxiunaisuangangyongyugongchengyalixiaoyudengyu 6.4mpa、wenduxiaoyudengyu 600℃ degaowenfazhong,yekeyiyongyuwenduxiaoyudengyu -100℃ debuxiugangfa,diwenfazhong。1cr18ni9ti nengnaixiaosuandengfushixingjiezhi;1cr18ni12mo2ti nengnaicusuandengfushixingjiezhi。1cr18ni9ti、1cr18ni12mo2ti yongyugaowenfashi,kecaiyongdanhuachuli,yitigaokangcashangxingneng。

zhouchenggegang

xuanyong gcr15,shiyongyugongchengyalixiaoyudengyu 300mpa、wenduxiaoyudengyu 300℃ dechaogaoyafamenzhong。

yongyuzhizuofagandecailiaojiaoduo,huanyou 4cr10si2mo mashitinairegang、4cr14ni14w2mo aoshitinairegangdeng。

faganluomuyufaganyiluowenxiangpeihe,zhijiechengshoufaganzhouxiangli,erqiepaiyuzhijiadengfajiandemocazhizhong。yinci,faganluomuchuyaoyouyidingdeqiangduwai,huanyaoqiujuyoumocaxishuxiao、buxiushi、buyufaganyaosidengxingneng。

閥桿螺母常選用如下材料

suliao

zhizuofaganluomudesuliaoyounilong 66 henilong 1010,tajuyounaifushixing、mocaxishuxiao、lianghaodejiagongxinghechengbendidengyoudian。danyouyutadeqiangdubijinshudi,guzhiyongyudiya、xiaokoujingfamenshang。

tonghejin

tonghejinbushengxiu,mocaxishuxiao,youyidingdeqiangdujirenxing,shimuqianfaganluomupubiancaiyongdecailiao。gongchengyalixiaoyudengyu 1.6mpa dediyafamenchangcaiyong 2cuzn38mnpb2 zhuhuangtong;gongchengyalixiaoyudengyu 6.4mpa defamenchangcaiyong zcua110fe3 wuxiqingtong;gongchengyalidayu 6.4mpa degaoyafamenchangcaiyong zcuzn25a16fe3mn3 zhuhuangtong。

gang

diandongfamendefaganluomuxuyaoyingdugaoyijianjiezhiduitongyoufushishi,jiuyigangdaitong。zaibudaozhifaganyaosidetiaojianxia,changxuanyong 35、40 youzhitansuganghe 1cr13、1cr18ni9、cr17ni2 dengbuxiugangzhizuofaganluomu。zaixuanyongzhongyingzunshoufaganluomuyingdudiyufaganyingdudetongze,yimianchanshengguozaomosunheyaosidexianxiang。


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