硬质合金

It is suitable to be used as filling material for oxygen-acetylene gas welding and carbon arc welding, and also for manual braze welding. It is the ideal material for welding of copper alloy, copper, gray cast iron and hard alloy knife and etc.

HS221 JIS ZYCusN 适用于氧-乙炔气焊及碳弧焊时作为填充材料，也可用于钎焊，是铜合金、钢、灰铸铁及硬质合金刀具等焊接材料中较为理想的焊接材料。

The Company has developed 6 series products of tungsten alloy, iron base, copper base, hard alloy, stainless steel and Covar in more than 300 varieties, widely applied to automobile, motorcycle, internal combustion engine, petroleum drilling, fishing gear, watch and medical appliance. The annual production capacity has reached 100 tons of injection molding and 200 tons of pressure molding.

公司已开发出钨合金、铁基、铜基、硬质合金、不锈钢，柯伐合金等六大系列，三百多个品种的产品，广泛应用于汽车、摩托车、内燃机、石油钻井、渔具、手表、医疗器械等领域，已达到注射成型100吨和压制成型200吨的年生产能力。

For grinding HSS and carbide engraving cutter as well as single lip or multiple lip cutters of various shapes such as radiuses cutters or negative taper angle of cutters.

产品参数：该机可用于磨削各类形似半圆角或反锥角的高速钢和硬质合金雕刻刀具和单边或多边刀具。

The effect of Mo and Nb platings as well as chemical etching on diamond nucleation and growth on cemented carbide YG6 are studied and discussed thoroughly.

深入研究了镀Mo、镀Nb及化学腐蚀等表面改性方法对YG6硬质合金基体上金刚石形核及生长的影响，分析了这些方法影响金刚石形核的机理。

And the strengthening mechanism can be described as follows: WC cemented carbides have interlaced short-clubbed grain, and in the bend strength test, the microcrack generates at WC/WC grain boundary, and may be blocked by interlaced fine-clubbed grains during extending, which induce the intergranular pulling-out. Due to the pulling-out mechanism, fracture-extend energy is greatly expended, thus bend strength is increased. The wear mechanism is groove wear and spalling of WC grains.

热机械合金化合成的WC-Co硬质合金比传统方法制备的同类WC合金具有更高的强度，其机理是：热机械合金化合成的WC合金具有交替排列的短棒状组织，在三点弯曲试验中，微裂纹萌生于WC/WC晶界位置，受到交错排列的短棒状晶粒的阻碍，裂纹扩展以短棒状晶粒的拔出方式进行，极大地消耗了裂纹扩展的能量，从而提高了弯曲强度；合成试样的摩擦磨损过程以犁沟磨损和WC颗粒的剥落为主要特征。

To complete the well production, casing is installed and cemented and the drilling rig is dismantled and moved to the next site.

要完成以及生产，套管安装和硬质合金和钻机是拆除和移动到下一个站点。

The Yongjia County great wild goose China valve Limited company is situated at the good communications superiorly, the humanities environment "township of the Chinese pump valve"- the cup northern town, this company specialized production seals the ball valve, the biased half ball valve hardly, low, high-pressured plate gate valve, oil field special-purpose valve, throttle cut-off valve, high-pressured check valve's specialized enterprise.

该系列法门结构合理，密封可靠，操作轻便。密封面均喷焊硬质合金，具有防腐、耐磨、耐冲蚀等优点，且可用于节流。尤其适用于工作压力16MPa—45MPa ，工作温度120℃的水、油、泥浆、天然气管线作控制介质流动的启闭及调节装置。永嘉县鸿华阀门有限公司地处交通便利，人文环境优越的&中国泵阀之乡&-瓯北镇，本公司专业生产硬密封球阀、偏心半球阀，低、中、高压平板闸阀、油田专用阀，节流截止阀，高压止回阀的专业企业。

The mechanics of the oxidation-reduction method and the reduction kinetics characteristic of tungsten trioxide were studied.

2也可用任意粒度的钨粉做初始原料，将其在一定条件下氧化和还原，便能得到可作为高性能硬质合金原料的超细钨粉。

Cracks with excessively rough edges will be removed with a hand grinder or carbide tool.

裂缝与边缘过于粗糙，以手将取消或硬质合金刀具磨床。

Our main products are: Solid Carbide milling cutter blade, high-speed steel cutter incision, saw milling, three-edged noodle cutter, milling cutter, such as welding alloy insert non-standard cutting tools.

公司目前主要产品有：整体硬质合金锯片铣刀、高速钢切口铣刀、锯片铣刀、三面刃铣刀、镶合金焊接铣刀等非标刀具。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。