2、

Influence of post heat-treatment roll-pressing thread on the strength of ultra-high-strength alloy steel bolt

热处理后滚压螺纹对超高强度合金钢螺栓强度的影响

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3、

The connectional strength of FRP thread by press molding is bigger, the period of production shorter, surface brighter and cost lower.

模压螺栓或螺母连接强度大,生产周期短,产品表面光洁,成本低。

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4、

Volume calculation of worm thread of continuous screw press

螺旋榨油机榨螺螺纹体积计算的研究

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5、

The QTY of contacts is3-pin to8-pin, the connection method for the thread type, pinhole connections for welding type, press-fit and PCB type.

电连接器芯数范围从3芯到8芯,连接方式为螺纹式,针孔的连接方式为焊接式,压接式和PCB式。

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6、

There are several traditional thread tapping method such as: tapping by hand work, tapping by drill press, vibration tapping.

传统的螺纹加工方法有:手工攻丝、钻床攻丝、振动攻丝等。

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