The upsetting test of metal powder sintered preform by blow speed of the hydraulic press, crank press, pneumatic hammer and high energy rate forging hammer was reported.
研究了用液压机、曲柄压力机、空气锤及高速锤的打击速度对粉末冶金烧结体进行的镦粗试验。
HIGH SPEED HEADER: Newer type of cold forging machine which produces rollers at a faster rate than the old style machine.
高速镦头机：具有比旧式镦头机更快滚子加工速度的新型冷锻设备。
The kinematically admissible velocity field and strain rate field for extension forging of rounds have been established.
建立了圆坯拔长锻造的运动许可速度场与应变速率场。
Traditional experiments of ingot mould design is drawn on . The existing ingot mould structure has been redesigned and optimized to raise forging rate and improve quality of ingot.
为了提高钢锭锻压比，借鉴钢锭模设计的传统经验，对原有钢锭模结构进行了重新设计，尝试优化钢锭模结构来改善钢锭的整体质量。
The effect of forging rate on strain is not obvious.
锻造速率对坯料应变的影响不显著。
Because there are no any formula and chart of designing bearing plates of forging dies, the designs of bearing plates depend only on experience of designers. The rate and quality of design are low.
由于没有关于锻模垫板的计算公式和图表，设计者仅凭经验进行设计，工作效率和设计质量低。
The reasonable selection of the process parameter has remarkable effects in the controlling of forging quality, increasing of the qualification rate and productivity.
工艺参数的合理选择对宏观控制锻件质量、提高锻件合格率、提高生产率效果显著。
Deformation rate influence the temperature rise of forging, a reasonable choice could influence the forging of forming to a certain extent.
变形速率影响锻件的温升，其合理选择对锻件成形有一定影响。
While forging the high-carbon chromium bearing steel by the finish forge press, there still remains the issues that the carbide network can not be crushed with the low qualification rate.
精锻机锻造高碳铬轴承钢时存在网状碳化物不易破碎、锻件合格率低的问题。
While forging the high-carbon chromium bearing steel by the finish forge press, there still remains the issues that the carbide network can not be crushed with the low qualification rate.
精锻机锻造高碳铬轴承钢时存在网状碳化物不易破碎、锻件合格率低的问题。
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