CN105063468A - 一种叉车驱动桥半轴的锻造工艺 - Google Patents
一种叉车驱动桥半轴的锻造工艺 Download PDFInfo
- Publication number
- CN105063468A CN105063468A CN201510424061.5A CN201510424061A CN105063468A CN 105063468 A CN105063468 A CN 105063468A CN 201510424061 A CN201510424061 A CN 201510424061A CN 105063468 A CN105063468 A CN 105063468A
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- China
- Prior art keywords
- equal
- semiaxis
- forging
- steel ingot
- smaller
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- 238000005242 forging Methods 0.000 title claims abstract description 37
- 238000005516 engineering process Methods 0.000 title abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims description 11
- 238000005255 carburizing Methods 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 230000000903 blocking Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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[Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 210000001138 Tears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 210000001519 tissues Anatomy 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
本发明公开了一种叉车驱动桥半轴的锻造工艺,包括以下工艺步骤:a、浇注棒料钢锭,钢锭中化学成分重量百分比为:2.25%≤C≤2.45%,1.4≤Si≤2.4%,0.6%≤Mn≤1.4%,0.007%≤P≤0.125%,0.006≤S≤0.026%,0.01≤Nb≤0.05%,1.5%≤Al≤2.20%,0.25%≤Mg≤0.35%,余量为Fe;本发明方法克服了传统锻造方法中过程繁杂,高耗能低效率,锻造精度不高等问题,有利于未来节能减排的发展趋势。
Description
技术领域
[0001] 本发明涉及一种叉车驱动桥半轴的锻造工艺。
背景技术
[0002] 现在主流的叉车驱动桥半轴锻造方法仍采用的是传统的锻造工艺和锻后热处理工艺。采用这种锻造方式存在以下诸多不足:采用传统锻造方法,加热次数多,导致锻件火耗加大,燃气电能消耗量大,锻造时间长,锻造效率低,员工劳动强度大,锻造精度得不到有效控制,不利于未来节能减排的发展趋势。
发明内容
[0003] 本发明的目的是提供一种叉车驱动桥半轴的锻造工艺,该方法克服了传统锻造方法中过程繁杂,高耗能低效率,锻造精度不高等问题,有利于未来节能减排的发展趋势。
[0004] 本发明的技术方案如下:
一种叉车驱动桥半轴的锻造工艺,包括以下工艺步骤:
a、浇注棒料钢锭,钢锭中化学成分重量百分比为:2.25%彡C彡2.45%,1.4 彡 Si 彡 2.4%, 0.6% ^ Mn ^ 1.4%, 0.007% 彡 P 彡 0.125%,0.006 彡 S 彡 0.026%,0.01 ^ Nb ^ 0.05%,1.5% 彡 Al 彡 2.20%,0.25% 彡 Mg 彡 0.35%,余量为 Fe ;
b、在1150°C -9500C的温度范围内,将棒料钢锭反复镦粗-拔长使锻造比大于3,以进行预锻处理后的半轴钢锭,将半轴钢锭加热至1020~1080°C,放入成型模内,用成型模锻压成型半轴,终锻温度不低于870°C ;
C、将成型后的半轴放在可控气氛箱式渗碳内,炉碳势为2.0%〜3.2%的气氛下、温度为500°C〜570°C的条件下渗碳12〜15小时;
d、将零件在750〜800°C进行油淬,淬火油温度为120〜130°C,零件表面清洗后将零件在250〜270°C进行低温回火,时间80〜lOOmin,取出零部件,出炉空冷。
[0005] 所述的成型后的半轴放在可控气氛箱式渗碳内,炉碳势为2.6%的气氛下、温度为530°C的条件下渗碳13小时。
[0006] 本发明锻件中含有Al元素及其合理设计含量百分比,含铝量过少,起不到控制晶粒长大的作用,含铝过多,压力加工时在形成纤维组织的条件下易造成木纹断口、撕痕状断口等,这些都会降低锻件的机械性能和使用性能。合理设计铝含量百分比提高了锻件的锻造精度,锻后采用的一次重结晶正回火热处理工艺代替以往的需采用两次重结晶正回火的热处理工艺,节约了大量的燃气电能消耗,并提高了工作效率,大大降低了工人的劳动强度和生产成本,提高驱动桥半轴的锻造质量,实现了驱动桥半轴高效节能型的发展道路。
[0007] 本发明的力学性能检测数据如下:
伸长率δ 5 (%) 10
断面收缩率φ (ο/ο) 35 冲击功Akv (J):彡45 冲击韧性值a kv(J/cm2):彡71 硬度..( 203HB。
具体实施方式
[0008] 实施例1
一种叉车驱动桥半轴的锻造工艺,包括以下工艺步骤:
a、浇注棒料钢锭,钢锭中化学成分重量百分比为:C2.35%,Sil.9%,Mnl%,P0.1%,S0.012%,Nb0.03%,All.8%,Mg0.3%,余量为 Fe ;
b、在1050°C的温度范围内,将棒料钢锭反复镦粗-拔长使锻造比大于3,以进行预锻处理后的半轴钢锭,将半轴钢锭加热至1050°C,放入成型模内,用成型模锻压成型半轴,终锻温度不低于870°C ;
C、将成型后的半轴放在可控气氛箱式渗碳内,炉碳势为2.6%的气氛下、温度为530°C的条件下渗碳13小时;
d、将零件在780°C进行油淬,淬火油温度为125°C,零件表面清洗后将零件在260°C进行低温回火,时间90min,取出零部件,出炉空冷。
Claims (2)
1.一种叉车驱动桥半轴的锻造工艺,其特征在于,包括以下工艺步骤: a、浇注棒料钢锭,钢锭中化学成分重量百分比为:2.25%彡C彡2.45%,1.4 彡 Si 彡 2.4%, 0.6% ^ Mn ^ 1.4%, 0.007% 彡 P 彡 0.125%,0.006 彡 S 彡 0.026%,0.01 ^ Nb ^ 0.05%,1.5% 彡 Al 彡 2.20%,0.25% 彡 Mg 彡 0.35%,余量为 Fe ; b、在1150°C -9500C的温度范围内,将棒料钢锭反复镦粗-拔长使锻造比大于3,以进行预锻处理后的半轴钢锭,将半轴钢锭加热至1020~1080°C,放入成型模内,用成型模锻压成型半轴,终锻温度不低于870°C ; C、将成型后的半轴放在可控气氛箱式渗碳内,炉碳势为2.0%〜3.2%的气氛下、温度为500°C〜570°C的条件下渗碳12〜15小时; d、将零件在750〜800°C进行油淬,淬火油温度为120〜130°C,零件表面清洗后将零件在250〜270°C进行低温回火,时间80〜lOOmin,取出零部件,出炉空冷。
2.根据权利要求1所述叉车驱动桥半轴的锻造工艺,其特征在于,所述的成型后的半轴放在可控气氛箱式渗碳内,炉碳势为2.6 %的气氛下、温度为530°C的条件下渗碳13小时。
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