硬质合金
硬質閤金
경질합금
CEMENTED CARBIDE
2001年
1期
4-7
,共4页
碳化钨 Fsss SEM
碳化鎢 Fsss SEM
탄화오 Fsss SEM
铁、钴元素大量用于硬质合金中,构成硬质合金的粘结相。而微量的铁、钴元素对碳化钨质量有什么影响,却报导甚少。通过试验发现:钨加炭炉料中铁、钴含量分别超过约0.059%、0.037%时,碳化后的碳化钨块发生严重收缩,难以磨碎和过筛,碳化钨的微观形貌也由类似球状变成棱角的多面体,费氏粒度变粗,影响到碳化钨的质量控制及一次投入产出合格率。
鐵、鈷元素大量用于硬質閤金中,構成硬質閤金的粘結相。而微量的鐵、鈷元素對碳化鎢質量有什麽影響,卻報導甚少。通過試驗髮現:鎢加炭爐料中鐵、鈷含量分彆超過約0.059%、0.037%時,碳化後的碳化鎢塊髮生嚴重收縮,難以磨碎和過篩,碳化鎢的微觀形貌也由類似毬狀變成稜角的多麵體,費氏粒度變粗,影響到碳化鎢的質量控製及一次投入產齣閤格率。
철、고원소대량용우경질합금중,구성경질합금적점결상。이미량적철、고원소대탄화오질량유십요영향,각보도심소。통과시험발현:오가탄로료중철、고함량분별초과약0.059%、0.037%시,탄화후적탄화오괴발생엄중수축,난이마쇄화과사,탄화오적미관형모야유유사구상변성릉각적다면체,비씨립도변조,영향도탄화오적질량공제급일차투입산출합격솔。
Fe、Co elements are adopted in cemented carbide with large quantity, consisting of the binder phase of cemented carbide,they are the main elements th at have effects on properties and structures of cemented carbide.the test result s show as follows:when Fe content is≥0.059% or Co content is≥0.037% in W＋Co,W C lumps contract considerably,they are difficult to be crushed and the morpholo gy of WC also changes from ball-shape similarities to polyhedrons with distingui shing edges and corners,larger Fsss willinfluence quality control and qualificat ion ratio of WC.
