齿轮表面的喷丸杏宇官网强化技术的应用

杏宇官网1.提高渗碳齿轮表面硬度
例1:一汽热处理分厂喷丸设备采用德国产TR5SVR—1型应力喷丸设备。喷丸工艺为:采用直径为¢0.8mm钢丸,喷丸时间9min,喷丸速度为2800r/min。齿轮材料为22CrMoH钢,经渗碳淬火及回火处理。喷丸强化处理后齿轮表层组织得到了细化,表层的残留奥氏体含量比未经喷丸处理工件的残留奥氏体含量要低10%左右,在距离表面0.15mm范围内,变化量比较明显;经强化喷丸处理后的齿轮表面硬度提高了0.5~2HRC。
2.提高齿轮表面残余压应力并改善表层显微组织
例2:桑塔纳轿车变速器二档从动齿轮,经渗碳淬火、杏宇官网回火处理。喷丸采用叶轮式喷丸机,喷丸速度2900r/min,弹丸硬度57HRC。其喷丸试验结果如下。
(1)喷丸件表层显微硬度明显提高,这是受到高的残余压应力、加工硬化和组织变化(细化)综合作用的结果,其中残留奥氏体的显著减少对硬度提高也做出了贡献。
(2)由于喷丸使工件表层中的残留奥氏体变为马氏体,可用来提高表面硬度。马氏体针明显较未喷丸件细小致密,起到了细化马氏体亚结构的作用。有利于残余应力的提高,从而提高了齿轮的疲劳性能。
3.提高齿轮的疲劳寿命
例3:一汽采用强化喷丸工艺对“解放”牌汽车变速器一挡齿轮进行疲劳寿命试验,显著提高了齿轮的疲劳寿命。如表1所示。为了提高“解放”牌主动螺旋齿轮的疲劳寿命采用大圆弧滚刀切齿,增大齿轮圆角可以使主动螺旋齿轮的寿命由20.83万次提高到69.54万次,如果再采用强化喷丸,可以使其疲劳寿命提高到210.9万次。
例4:齿轮采用碳氮共渗后喷丸硬化提高接触疲劳强度。如SCM420H钢齿轮,经通氨气等进行碳氮共渗,随着含氮量的增加,ΔHV(硬度降)提高,即抗回火性能提高,回火温度可达300℃。解决了汽车用自动变速器AIT常规渗碳齿轮齿面接触疲劳破坏问题。
关于良时智能 About Liangshi IntelRobot:
上海良时智能科技股份有限公司(股票代码:837430 厚积薄发 持续创新),为全球客户提供表面处理系统解决方案,从业20多年,是一个集研发、设计、制造、工程安装、工程咨询于一体的专业化制造及自动化智能控制系统集成公司,能为客户解决:
Shanghai Liangshi IntelRobot Technology Corporation (Stock Code: 837430 Accumulate richly and break forth vastly; innovate continuously) provides surface treatment sandblasting system solution for global customers. By engaging in this industry for more than twenty years, we're a professional manufacturing and automatic intelligent control system corporation, which integrates researching, designing, manufacturing, project installation and project consulting. We can provide our customers with:
1、表面处理喷抛丸、喷丸强化设备、热喷涂和涂装设备工艺系统解决方案和工艺装备;
We provide process system solution and process equipments of surface treatment sandblasting shot blasting, shot peening, enameling, thermal spraying, coating equipment.
2、自动化和机器人应用工艺系统解决方案和工艺装备;
We provide professional system solution and process equipments of automation and robot technology application.
3、食品乳品、制药、生物、制冷、石油化工、船舶制造、能源、造纸、纺织系统领域承压系统集成整体解决方案;
We provide professional integrated solution for pressure bearing system in fields of food dairy, biopharmaceutical, refrigerating, petrochemical, marine engineering, energy, paper-making, fabrics, etc.
4、涂装环保设备:VOC废气、废水、粉尘处理和噪音治理系统工艺解决方案和工艺装备。
We provide environment protection blasting and painting equipment: process solution and equipment of VOCs waste gas, waste water, dust, noise treatment system.
企业主导产品如下 The leading products of our company are as follows:
主营业务:表面处理工程系统集成的设计、研发、生产和销售。
Main business: design, research, production and sales of surface treatment engineering system integration.
六类主要产品:自动化涂装生产线、杏宇注册智能机器人喷涂系统、自动化喷抛丸生产线、智能机器人喷抛丸强化系统、自动化热喷涂系统、涂装节能环保设备。
Six main product categories are: automatic painting production line, intelligent robot painting system, automatic shot/wheel blasting production line, intelligent robot shot peening system, automatic thermal spraying system, energy saving and environmental protection equipment for painting.
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