【摘 要】
：
材料为 20号钢和 20Cr的薄壁齿轮,渗碳后直接淬火极易导致变脆而发生断裂;一次加热淬火法可解决齿轮的脆性问题,但齿轮变形超差;渗碳盐浴分级淬火法可有效地解决渗碳齿轮变脆
【机 构】
：
济南轻骑发动机厂,济南轻骑发动机厂,济南轻骑发动机厂
论文部分内容阅读
材料为 20号钢和 20Cr的薄壁齿轮,渗碳后直接淬火极易导致变脆而发生断裂;一次加热淬火法可解决齿轮的脆性问题,但齿轮变形超差;渗碳盐浴分级淬火法可有效地解决渗碳齿轮变脆发生断裂和热处理变形,从而提高了齿轮精度。
Material 20 and 20Cr thin-walled steel gear, direct quenching after carburizing can easily lead to brittle fracture; a heating quenching method can solve the problem of gear brittleness, but the gear deformation overweight; carburizing salt bath classification quenching Which can effectively solve the brittle fracture carburizing gear and heat treatment deformation, thereby improving the gear accuracy.
其他文献
一月1日,根据国务院办公厅国办发[1998]144号文件要求,全省工业统计制度即日起开始实施两项重大改革,一是建设国有及国有控股工业企业主要经济指标月报分企业报送制度;二是
On June 23rd,Huntsman Corporation an-nounced to acquire the Baroda Division ofMetrochem Industries,a manufacturing facil-ity for the production of intermediate
【正】 On November 5th, 2009 a ground breaking ceremony for Beijing Petrochemical AdvancedMaterials Technology Industrial Base was held in Fangshan district of
The demand for pesticides in China is softand the price has fallen constantly thisyear. The main reasons include impactsfrom the global financial crisis and an
On June 2nd,2009,China’s State Councilformally announced a policy package to ac-celerate the development of its bio industry.Objectives of the policies includ
The title compound [H4As8V14O42(H2O)]6H2O 1 has been synthesized and characterized by elemental analysis, IR, and single-crystal X-ray diffraction analysis. It
有效的数学教学活动是教师教与学生学的有机统一,应体现“以人为本”的理念,促进学生的全面发展。因此,初中数学教学要从数学课程标准出发,明确教学目标,优化教学设计,从传统
目的确证L-甲基多巴的结构。方法采用紫外、红外、氢谱、碳谱和质谱等方法进行结构解析。结果在0.1mol·L-1氢氧化钠溶液中最大吸收峰发生红移;红外光谱表明分子中含有羟基、
PolyethyleneFrom early to mid October 2009, because ofthe price rise of crude oil in the internationalmarket and decrease of inventory, PE(polyethylene) prices
Ever since 2008,the growth of domestic demandfor silicone monomers has slowed downvery much owing to the economic crisis.Atthe end of 2008,the price of silicon