硬质点

本文介绍了Ti元素在气缸体中的存在形式，TiN、TiC硬质点的作用，及测量TiN、TiC硬质点数量的方法。

The form of element Ti existing in a cylinder block and the action of hard TiN and TiC as well as how to measure the number of hard TiN and TiC . have been introduced .

稀土变质消除铝合金压铸件中硬质点

Eliminating the Hard Spots in RE Modified Al Alloy Die Castings

铸造铅黄铜表面硬质点的形成机理及消除

Forming Mechanics and Remove of Hard Inclusion on Casting Lead Brass Surface

铝压铸件中的硬质点及非金属夹杂物

Hard Spots and Nonmetallic Inclusion in Aluminum Die Casting

铝合金压铸件中硬质点的研究与预防

A Study And Prevention on The Hard Spots in Die Castings of Aluminum Alloys

铝压铸件中的硬质点及硬质金属杂质相相贯线的趋势及极值点

Hard Spot and Hard Metallic Inclusion in Aluminum Die Casting Trend and extreme value of intersection of solids

由于化爆材料的不均匀性，其内部随机分布着硬质点。

Due to the asymmetry of explosive chemical material , there are many hard points scattered in its interior .

在Ni-P-化学复合镀工艺的基础上，探索加入纳米金刚石粒子作为硬质点的Ni-P-纳米金刚石共沉积复合镀新工艺技术。

Based upon the Ni-P electroless plating , a new technology for Ni-P-nano diamond electroless composite plating was developed by adding nano-diamond as high hardness particles .

随流孕育剂加入量过高容易产生夹杂物、夹渣缺陷，还会发生孕育剂聚集引起的硬质点。

Too high addition amount of the stream inoculant is easy to cause inclusions , slag and inoculant cluster which would lead to the formation of hard spots .

Inconel718中所含的硬质点颗粒恶化了刀具的摩擦磨损，导致刀具在加工过程中的快速失效。

Some hard carbide particles included in Inconel 718 greatly increase abrasive wears of the cutting tools . As a result , the cutting tool wears rapidly during machining .

结果表明，涂层机械结合紧密；涂层具有致密的层状结构，扁平颗粒小，氧化物膜细小，硬质点相分布均匀，孔隙率低；

The results showed that the coatings are well bonded to the substrate , they have dense lamellar structure , fine grains , thinner oxidation films and low porosities ;

结果表明，这类材料属较难加工材料，这主要是由于钢中存在大量硬质点，且材料具有较高强度和硬度所致。

The results show that the pre-hardened plastic-mould steel belongs to a little low machinability steel because of much hard inclusion existing in microstructure and its high strength and hardness .

但，也存在在薄壁球铁件生产中产生渗碳体组织、产生硬质点，造成薄壁球铁件硬脆难以加工等缺点。

But in the production of thin wall nodular iron castings , it has the defaults that the white structure and hard spots can easily be formed , deteriorating the mechanical properties .

本文还对优化合金的耐磨性进行了研究，结果表明：铜合金中的硬质点、减磨相及细化的组织对耐磨性都十分有利。

This paper also study the wear resistance of the optimal alloy , the result suggest that hard phase particle , friction reduce phase and the fined structure contribute to the wear resistance of the copper alloy greatly .

检验结果表明，进口毛坯和国产毛坯在化学成分、硬度及其均匀性、石墨含量、晶粒大小及形貌、磷共晶形态、硬质点的成分及含量均存在差别。

Many differences in chemical composition , hardness , uniformity , graphite content , grain size , morphology , phosphide eutectic morphology and composition as well as quantity of hard phase have been found in the inspection results between them .

镍基高温合金具有导热性极差、加工硬化倾向大、硬质点多的特点，非常难以进行切削加工，如何提高镍基高温合金的切削加工性能一直是航空航天以及其它制造行业迫切需要解决的问题。

Nickel-based alloy is one of the most difficult-to-machine materials because of hard particle , work hardening , low thermal conductivity . How to improve the machinability of nickel-based alloy is a very urgent problem in aircraft , spacecraft and other manufacturing industries .

研究了一种具有奥氏体基体及碳化物硬质点的合金钢，并用于制造高速线材轧制生产线上的导辊，使用温度在560℃下，合金钢导辊具有良好的耐磨性。

A kind of Alloy steel with austenite base and hard carbide particle is studied and made into guide rollers that are used in steel rolling production line with high speed . The guide rollers made by the alloy steel have good wear resistance at the temperature up to 560 ?