①Kugadzira. GCr15 simbi ine zvirinani zvekugadzira mashandiro uye yekugadzira tembiricha yemhandotungsten simbi moldyakafara. Mitemo yekugadzira nzira ndeye: kudziyisa 1050 ~ 1100 ℃, yekutanga yekubikira tembiricha 1020 ~ 1080 ℃, yekupedzisira yekuforoma tembiricha 850 ℃, uye kutonhora kwemhepo mushure mekugadzira. Iyo yakaumbwa chimiro inofanirwa kuve yakanaka flake spheroidal body. Chimiro chakadaro chinogona kuve spheroidized uye annealed pasina normalizing.
②Gadzirisa moto. Iyo yekudziya yekudziya tembiricha yeGCr15 simbi inowanzoita 900 ~ 920 ℃, uye mwero wekutonhora haugone kuve usingasviki 40 ~ 50 ℃/min. Mabhesi madiki mold anogona kutonhodzwa mumhepo yakanyarara; mabhesi makuru ekuumba anogona kutonhodzwa nemhepo inoputika kana kupfapfaidza; mabhesi makuru eforoma ane dhayamita inodarika 200mm anogona kutonhodzwa mumafuta anopisa, uye oendeswa kunze kunotonhodzwa nemhepo kana tembiricha yepasi inenge 200°C. Kushushikana kwemukati kunoumbwa neyekupedzisira kutonhora nzira ye tungsten simbi mold yakakura uye iri nyore kutsemuka. Inofanirwa kuve spheroidized annealed nekukasira kana kuti stress annealing process inofanira kuwedzerwa.
③Spheroidizing annealing. Iyo spheroidizing annealing process yakatarwa yeGCr15 simbi kazhinji ndeye: tungsten simbi mold yekudziya tembiricha 770 ~ 790 ℃, inobata tembiricha 2 ~ 4h, isothermal tembiricha 690 ~ 720 ℃, isothermal nguva 4 ~ 6h. Mushure mekuvhara, chimiro chakanaka uye chakafanana spherical pearlite nekuoma kwe217 ~ 255HBS uye kuita kwakanaka kwekucheka. GCr15 simbi ine kunaka kuomarara (yakanyanya kuomarara dhayamita yekudzima mafuta i25mm), uye kudzika kweiyo yakaomeswa layer inowanikwa pasi pekudzima mafuta kwakafanana neiyo kabhoni mudziyo simbi kuburikidza nekudzima kwemvura.
Nguva yekutumira: Aug-23-2024
