1) intercritical annealing
双相区球化退火
1.
The intercritical annealing process of 50Cr alloy steel wire with plastic deformation was probed into with the method of orthogonal test for the better result of spheroidal annealing with the oven free of oxygen in the process of metatic card clothing wire production.
为了金属针布钢丝制造企业在球化退火过程中利用无氧化罩式炉更好地保证球化效果,采用正交试验法,对塑性变形50Cr合金钢丝进行双相区球化退火工艺研究。
2.
One was the conventional intercritical annealing.
采用常规双相区球化退火和亚温球化退火工艺研究了常规轧制(CR)和控轧控冷(CRC)的中碳钢SWRCH35K的球化退火行为和力学性能。
3.
The intercritical annealing process of 70Nb alloy steel wire with severe plastic deformation is studied by using orthogonal test method.
采用正交试验法研究了大塑性变形70Nb合金钢丝双相区球化退火工艺。
2) spheroidal annealing
球化退火
1.
Production of spheroidal annealing of cold rolled 25 steel strip;
25钢冷轧球化退火钢带的生产
2.
To introduce a new process for making needle latch steel wire with diameter range 0 34~0 53mm The technological process consists of patenting-phosphating-cold drawing-spheroidal annealing under Ac 1 point in electrical heating furnace-slight drawing to finished product The theoretical basis and advantages of the main points of new process are emphatically elaborate
该工艺流程是:铅淬火—磷化—拔丝—Acl以下电加热连续退火炉球化退火—轻拉至成品。
3) spheroidizing annealing
球化退火
1.
In order to solve the problem of crack deformation tendency of the quenched steel wires for a uniform structure,development is done to the special wire of hi-carbon and low alloy,finding that there is variation of spheroidizing annealing processed structure under the same spheroidizing annealing process once drawed.
为了改善针布齿条淬火时的变形开裂倾向性,使其最终性能均匀,研究了针布齿条专用高碳低合金钢丝经过不同程度拉拔变形后,在相同球化退火工艺下具有差异的球化退火组织,并且比较了经较大拉拔变形后钢丝退火前后的组织差异,以及该钢丝经轧制前后的组织变化情况。
2.
The carbide morphology and distribution in the microstructure of 4Cr10Si2Mo steel have been improved through the improvement of spheroidizing annealing proce.
通过改进球化退火工艺,使4Cr10Si2Mo钢的显微组织中的碳化物形态、分布得到改善,气门电镦的质量有了明显的提高。
3.
The effects of rolling process on spheroidizing annealing of GCr15 were studied by thermo-simulation.
通过热模拟的方法研究轧制工艺对GCr15球化退火的影响。
4) spheroidize annealing
球化退火
1.
Fracture analysis of φ674 semisteel roller in spheroidize annealing;
φ674半钢轧辊于球化退火中断裂原因分析
2.
The article discusses some influencing factors upon evaluation of zonal carbonization of bearing steel, shows influencing extent attribute to grinding depth, time of etching, spheroidize annealing.
研究了轴承钢带状碳化物评级过程中的影响因素,找出了磨制深度、腐蚀时间、球化退火对其带状碳化物的影响程度,从而来指导实际的评级检验工作,以确保轴承钢的质量。
3.
In this paper,the drawing and spheroidize annealing processes of SWRH57EK SWRH72B SWRH82B high-carbon wire rod was studied.
本文研究了SWRH57B、SWRH72B和SWRH82B高碳钢盘条的拉拔及球化退火工艺,分析了盘条拉拔过程中珠光体组织的变化规律和低温退火过程中渗碳体球化机理,讨论了化学成分、变形量、加热温度及保温时间对球化过程的影响。
5) spheroidization annealing
球化退火
1.
To research the spheroidization annealing process of SWRH72B,special alloy steel A and B steel wire for metal card clothing.
对SWRH72B、金属针布专用合金钢A和B 3种钢丝的球化退火工艺进行研究。
2.
The spheroidization annealing process ofφ2.
80mm合金钢Ⅱ三种钢丝的球化退火工艺,分别找出了其最佳的球化退火工艺参数;同时分析了球化退火工艺参数对最终碳化物球粒度的影响。
3.
To research the effects of spheroidization process on carbide configuration and distribution and the effects of drawing deformation magnitude on spheroidization annealing microstructure about special alloy steel wire for metal card clothing after drawing deformation.
研究金属针布专用合金钢丝拉拔变形后,球化退火工艺对碳化物形态及分布状态、拉拔变形量对球化退火组织的影响。
6) spheroidizing
['sfiərɔidaiziŋ]
球化退火
1.
This article introduces a new process of spheroidizing of quenching and tigh tempering to GCr15.
该工艺比传统球化退火工艺省时、节能、效率高 ,同时符合工艺要求的各项性能指标 ,已在实际生产中得到应
2.
In this paper the spheroidizing annealing process of the cold extrusion workblank of 20Cr steel have been systematically studied.
本文系统地研究了20Cr钢冷挤压毛坯的球化退火过程,选定了亚共析钢节能、省时与球化效果好的热处理工艺,并已用于工业生产,取得了显著的经济效益。
补充资料:退火
退火 annealing 将工件加热到预定温度,保温一定的时间后缓慢冷却的金属热处理工艺。退火的目的在于:①改善或消除钢铁在铸造、锻压、轧制和焊接过程中所造成的各种组织缺陷以及残余应力,防止工件变形、开裂。②软化工件以便进行切削加工。③细化晶粒,改善组织以提高工件的机械性能。④为最终热处理(淬火、回火)作好组织准备。常用的退火工艺有:①完全退火。用以细化中、低碳钢经铸造、锻压和焊接后出现的力学性能不佳的粗大过热组织。将工件加热到铁素体全部转变为奥氏体的温度以上30~50℃,保温一段时间,然后随炉缓慢冷却,在冷却过程中奥氏体再次发生转变,即可使钢的组织变细。②球化退火。用以降低工具钢和轴承钢锻压后的偏高硬度。将工件加热到钢开始形成奥氏体的温度以上20~40℃,保温后缓慢冷却,在冷却过程中珠光体中的片层状渗碳体变为球状,从而降低了硬度。③等温退火。用以降低某些镍、铬含量较高的合金结构钢的高硬度,以进行切削加工。一般先以较快速度冷却到奥氏体最不稳定的温度,保温适当时间,奥氏体转变为托氏体或索氏体,硬度即可降低。④再结晶退火。用以消除金属线材、薄板在冷拔、冷轧过程中的硬化现象(硬度升高、塑性下降)。加热温度一般为钢开始形成奥氏体的温度以下50~150℃ ,只有这样才能消除加工硬化效应使金属软化。⑤石墨化退火。用以使含有大量渗碳体的铸铁变成塑性良好的可锻铸铁。工艺操作是将铸件加热到950℃左右,保温一定时间后适当冷却,使渗碳体分解形成团絮状石墨。⑥扩散退火。用以使合金铸件化学成分均匀化,提高其使用性能。方法是在不发生熔化的前提下,将铸件加热到尽可能高的温度,并长时间保温,待合金中各种元素扩散趋于均匀分布后缓冷。⑦去应力退火。用以消除钢铁铸件和焊接件的内应力。对于钢铁制品加热后开始形成奥氏体的温度以下100~200℃,保温后在空气中冷却,即可消除内应力。 |
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