һ҇(gu)̖(ho)ʾ
䓵̖(ho)(jin)Q̖(ho)nj(du)ÿһNw䓮a(chn)ƷȡQ˂˽䓵һNͬZ(y)҇(gu)̖(ho)ʾ(j)(gu)Ҙ(bio)(zhn)Fa(chn)Ʒ̖(ho)ʾGB221-79Ҏ(gu)ÝhZ(y)ƴĸW(xu)Ԫط̖(ho)Ͱ?dng)?sh)Y(ji)ϵķʾ
̖(ho)лW(xu)ԪزÇ(gu)HW(xu)̖(ho)ʾSi,Mn,CrϡԪáREXtʾ ڮa(chn)ƷQ;ұ͝עһÝhZ(y)ƴĿsĸʾҊ(jin) ҪW(xu)Ԫغ%ð?dng)?sh)ֱʾ GB(bio)(zhn)̖(ho)õĿsĸ亭x ҇(gu)̖(ho)ʾķf(shu)
1̼ؽY(ji)(gu)
Q+(sh)+|(zh)ȼ(j)̖(ho)+Ó̖(ho)Mɡ̖(ho)ԡQ䓲ĵc(din)Ĕ(sh)ֱʾc(din)(sh)ֵλMPaQ235ʾc(din)s235 MPa̼ؽY(ji)(gu) ڱҪr(sh)̖(ho)ɘ(bio)ʾ|(zh)ȼ(j)Óķ̖(ho)|(zh)ȼ(j)̖(ho)քeABCDÓ̖(ho)Fʾv䓣bʾ(zhn)o䓣Zʾ(zhn)oTZʾ(zhn)o䓣(zhn)o䓿ɲ(bio)̖(ho)ZTZɲ(bio)Q235-AFʾA(j)v یT;̼䓵ȣϲ̼ؽY(ji)(gu)䓵ıʾ̖(ho)ӱʾ;ĸ
2(yu)|(zh)̼ؽY(ji)(gu)
̖(ho)_^ăλ(sh)ֱʾ䓵̼ƽ̼f(wn)֮ױʾƽ̼0.45%̖(ho)顰45̖(ho)Բx45̖(ho) i^ߵă(yu)|(zh)̼ؽY(ji)(gu)(yng)iԪؘ(bio)50Mn ۷v(zhn)o䓼T;ă(yu)|(zh)̼ؽY(ji)(gu)䓑(yng)̖(ho)e(bio)ƽ̼0.1%İ(zhn)o䓣̖(ho)10b
3̼ع
̖(ho)ԡTc ̖(ho)еĔ(sh)ֱʾ̼ƽ̼ǧ֮ױʾ硰T8ʾƽ̼0.8% i^̖(ho)(bio)Mn硰T8Mn ܸ(j)(yu)|(zh)̼ع䓵һマ(yu)|(zh)̼ع䓵̖(ho)עĸAʾ^(q)e硰T8MnA
4
̖(ho)ԡYԅ^(q)eڃ(yu)|(zh)̼ؽY(ji)(gu) ĸYĔ(sh)ֱʾ̼ƽ̼f(wn)֮ױʾƽ̼0.3%̖(ho)顰Y30 i^̖(ho)(bio)Mn硰Y40Mn
5ϽY(ji)(gu)
̖(ho)_^ăλ(sh)ֱʾ䓵̼ƽ̼f(wn)֮ױʾ40Cr ҪϽԪ(g)eϽԪһٷ֮ױʾ(dng)ƽϽ1.5%r(sh)̖(ho)һֻ(bio)Ԫط̖(ho)(bio)r»Ԫط̖(ho)ɘ(bio)Ԕ(sh)֡1̖(ho)12CrMoV͡12Cr1MoVǰt0.4-0.6%ߞ0.9-1.2%ɷȫͬ(dng)ϽԪƽ1.5%2.5%3.5%r(sh)Ԫط̖(ho)摪(yng)(bio)(yng)ʾ23418Cr2Ni4WA еCVTiXALB(yng)ϡREȺϽԪϽԪmȻܵͣԑ(yng)̖(ho)И(bio)20MnVBСC0.07-0.12%0.001-0.005% ܸ(j)(yu)|(zh)䓑(yng)̖(ho)ӡAԅ^(q)eһマ(yu)|(zh) T;ĺϽY(ji)(gu)䓣̖(ho)ԣYԓ䓷N;ķ̖(ho)磬Tõ30CrMnSi̖(ho)ʾML30CrMnSi
6ͺϽߏ(qing)
̖(ho)ıʾϺͺϽY(ji)(gu)ͬ ڌ(du)I(y)õͺϽߏ(qing)䓣(yng)̖(ho)(bio)16MnژČ䓷N顰16Mnq܇Č䓷N顰16MnLČ䓷N顰16MnR
7
䓰W(xu)ɷֿɷ̼֞䓺ͺϽ䓃̖(ho)ʾǰc(yu)|(zh)̼ؽY(ji)(gu)ͬcϽY(ji)(gu)ͬ
8L(dng)S
̖(ho)ĸGʾL(dng)S ڸ̼tS̖(ho)̼(bio)tǧ֮ױʾGCr15B̼S䓵̖(ho)ʾϺͺϽY(ji)(gu)ͬ
9Ͻ䓺ٹ
ٺϽ̖(ho)ƽ̼1.0%r(sh)(bio)̼(dng)ƽ̼1.0%r(sh)ǧ֮ױʾCr12CrWMn9SiCr3Cr2W8V кϽԪغıʾcϽY(ji)(gu)ͬ(du)t^͵ĺϽ̖(ho)tǧ֮ױʾڱʾĔ(sh)ǰӡ0ԱһԪغٷ֮ױʾķ^(q)e_(li)Cr06 ۸ٹ䓵̖(ho)һ㲻(bio)ֻ̼(bio)NϽԪƽİٷ֮סuϵ䓵̖(ho)ʾ顰W18Cr4V̖(ho)ĸCʾ̼δڡC̖ͨ(ho)
10P䓺͟
̖(ho)̼ǧ֮ױʾ硰2Cr13䓵ƽ̼0.2%к̼0.03%0.08%,̖(ho)ǰքeԡ000ʾ֮00Cr17Ni14Mo20Cr18 Ni9 ڌ(du)ҪϽԪٷ֮ױʾ≡ȄtϽY(ji)(gu)䓌(du)ϽԪصıʾ(bio)
11l
̖(ho)ǰĸHԅ^(q)e粻P䓺z顰H2Cr13ԅ^(q)eڲP䓡2Cr13
12늹ù
̖(ho)ĸ͔(sh)ֽMɡ̖(ho)^ĸDRʾ늹ß܈DWʾ늹܈o(w)ȡ䓣DQʾ늹܈ȡ ĸ֮Ĕ(sh)ֱʾFpֵW/kg100 ̖(ho)βĸGʾڸlz(yn)δӡGʾlʞ50ܲz(yn)ġ ̖(ho)DW470ʾ늹܈o(w)ȡ䓮a(chn)Ʒ50lʕr(sh)λFpֵ4.7W/kg
13늹üF
̖(ho)ĸDT͔(sh)ֽMDTʾ늹üF(sh)ֱʾ̖ͬ(ho)̖(ho)DT3 ڔ(sh)ֺӵĸʾ늴ܣA(j)Eؼ(j)C(j)DT8A
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