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采煤機(jī)截齒用WC—Co合金的磨損,強(qiáng)度與斷裂
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TD421.604

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Wear, Strength and Fracture of WC-Co Cemented Carbides Used for Cutter in Coaling Mining Machine
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    摘要:

    綜述了采煤機(jī)截齒用ＷＣ－Ｃｏ硬質(zhì)合金的磨損行為與機(jī)理、影響抗彎強(qiáng)度的各種因素、斷裂韌性與粘結(jié)相平均自由程的關(guān)系以及斷裂的不同方式。認(rèn)為磨粒磨損、沖擊疲勞和熱疲勞是截齒的主要失效形式，并指出硬質(zhì)合金中ＷＣ晶粒的鄰接度、晶粒尺寸以及粘結(jié)相結(jié)構(gòu)的控制是目前提高截齒壽命的主要方向。

    Abstract:

    he wear behaviors and mechanisms, the factors affecting the transverse rupture strength, the correlation between fracture toughness and the mean free path length of ductile phase, and the various fracture modes of WC-Co cemented carbides used for cutters in coaling mining machine are reviewed. It is suggested that abrasive wear, impact fatigue and thermal fatigue are the main types of failure of WC-Co cutters. It is pointed out that the major approaches to raising the service life of the cutter are the control of the she and the contiguous extent of the WC grain and the lattice type of the ductile phase.

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譚永生 蔡和平.采煤機(jī)截齒用WC—Co合金的磨損,強(qiáng)度與斷裂[J].稀有金屬材料與工程,1996,(6):7~13.[Tan Yongsheng, Cat Heping, Ma Baotian, Zhu Weidou, Liu Zhongxia. Wear, Strength and Fracture of WC-Co Cemented Carbides Used for Cutter in Coaling Mining Machine[J]. Rare Metal Materials and Engineering,1996,(6):7~13.]
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