A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Loader bucket tooth and heat treatment method thereof
The invention discloses a loader bucket tooth. The loader bucket tooth comprises C, Si, Mn, Cr, Ti, Mo, B and the like, wherein the mass ratio of Ti to B is specifically limited to be (10-8): 1, and therefore the material formed by the loader bucket tooth is small in grain size and high in grain strength. Meanwhile, the invention discloses a heat treatment method of the bucket tooth, the loader bucket tooth is subjected to step quenching after being cast, and a zero-heat-preservation secondary quenching mode is adopted after first austenitizing quenching treatment. According to the composition proportion and the heat treatment process of the bucket tooth, the final bucket tooth can be obtained in the form of low-carbon martensite, medium-carbon martensite and retained austenite (possibly containing a very small amount of ferrite), the surface hardness, the impact toughness and the wear resistance are remarkably improved, and the structure of the loader bucket tooth can reach the hardness being larger than or equal to 45 HRC and the impact toughness being larger than or equal to 30 J/cm<2>. The heat treatment method is simple in process, low in cost and good in effect.
本发明公开了一种装载机斗齿，包括C、Si、Mn、Cr、Ti、Mo和B等，其中具体限定了Ti/B质量比为10～8:1，使得其组成的材料晶粒小，晶粒强度高。同时公开了该斗齿的热处理方法，使装载机斗齿在铸造后进行分级淬火，在第一次奥氏体化淬火处理后，采取零保温的二次淬火方式。根据本发明所述斗齿的成分配比及热处理工艺，可获得最终的斗齿呈低碳马氏体+中碳马氏体+残留奥氏体(可能存在极少量铁素体)，显著提高了表面硬度、冲击韧性和耐磨性，所述装载机斗齿的组织可以达到硬度≥45HRC，冲击韧性≥30J/cm 2。该热处理方法工艺简单，成本低，效果好。
Loader bucket tooth and heat treatment method thereof
The invention discloses a loader bucket tooth. The loader bucket tooth comprises C, Si, Mn, Cr, Ti, Mo, B and the like, wherein the mass ratio of Ti to B is specifically limited to be (10-8): 1, and therefore the material formed by the loader bucket tooth is small in grain size and high in grain strength. Meanwhile, the invention discloses a heat treatment method of the bucket tooth, the loader bucket tooth is subjected to step quenching after being cast, and a zero-heat-preservation secondary quenching mode is adopted after first austenitizing quenching treatment. According to the composition proportion and the heat treatment process of the bucket tooth, the final bucket tooth can be obtained in the form of low-carbon martensite, medium-carbon martensite and retained austenite (possibly containing a very small amount of ferrite), the surface hardness, the impact toughness and the wear resistance are remarkably improved, and the structure of the loader bucket tooth can reach the hardness being larger than or equal to 45 HRC and the impact toughness being larger than or equal to 30 J/cm<2>. The heat treatment method is simple in process, low in cost and good in effect.
本发明公开了一种装载机斗齿，包括C、Si、Mn、Cr、Ti、Mo和B等，其中具体限定了Ti/B质量比为10～8:1，使得其组成的材料晶粒小，晶粒强度高。同时公开了该斗齿的热处理方法，使装载机斗齿在铸造后进行分级淬火，在第一次奥氏体化淬火处理后，采取零保温的二次淬火方式。根据本发明所述斗齿的成分配比及热处理工艺，可获得最终的斗齿呈低碳马氏体+中碳马氏体+残留奥氏体(可能存在极少量铁素体)，显著提高了表面硬度、冲击韧性和耐磨性，所述装载机斗齿的组织可以达到硬度≥45HRC，冲击韧性≥30J/cm 2。该热处理方法工艺简单，成本低，效果好。
Loader bucket tooth and heat treatment method thereof
一种装载机斗齿及其热处理方法
HAN PIN (author) / LU ZHENPO (author) / CHEN SUQIN (author) / WANG XIAOHU (author) / CHENG RAN (author) / GAO QIANG (author) / WANG GUIZHEN (author) / LIU BING (author)
2021-08-06
Patent
Electronic Resource
Chinese
Loader bucket edge protection tooth and assembling method thereof
| European Patent Office | 2025
Combined bucket tooth and tooth holder structure for loader
| European Patent Office | 2022