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1.NHI mainly provides research and development, design, manufacturing and services of the significant technology equipments of crushing &grinding, ore dressing, metal rolling and dressing shearing, tunnel boring, bulk material transporting and handling, synthetic excavating, construction machinery, transmission machinery, particle board, environmental protection and military and large castings and forgings for metallurgy, mining, coal, power, building material, port, chemical industry, environment industries.
简介：北方重工主要为冶金、矿山、煤炭、电力、建材、港口、化工、工程、环保等行业提供破碎粉磨、矿物洗选、烧结球团、金属压延和精整剪切、隧道掘进、散料输送和装卸、煤矿综采、工程机械、传动机械、人造板、环保、军工等重大技术装备及大型铸锻件的研发、设计、制造和服务。收藏指正
2.A Set of effective production methods for large investm ent castings was summarized through analysis of the production features and prac tical production experience.
通过对大型熔模铸钢件铸造特点的分析 ,根据生产实践经验总结出一套有效的大型熔模铸造件的生产方法收藏指正
3.This paper states the development of L211 paint for coating the large aluminum alloy castings in order to improve their quality by analysing the basic composition of coating. This paint has advanced technical properties,it can prevent cast deficiency such as:sand adhesion,sand inclusion,and improve the surface quality of castings which can reach Ra =4 5～12 5. [
从提高大型铝合金铸件质量出发，通过对涂料基本成分分析探讨，自行研制大型铝合金铸件L211型涂料．该涂料具有良好的工艺性能，能有效防止铸件表面粘砂、夹砂等缺陷，提高铸件表面质量，粗糙度可达到4．5～12．5收藏指正
4.Sand-removing of large and medium sized castings,deoxidization of forgings,heat-freated pieces,steel plates,steel pipes,sections and steel structures,surface treatment before plating.
2大型、中型铸件的清砂。锻造件、热处理件的去除氧化皮、钢板、型钢及钢构件的除锈及表面强化。收藏指正
5.APC technique is highly applicable to the manufacture of large-sized complicated thin-walled castings, and it has strong potentials in the casting manufacture process.
这项技术适合大型复杂薄壁铸件的高质量精密铸造,已成功应用于铝合金铸件的工程化整体铸造生产,具备广阔的发展前景。收藏指正
6.Shanghai Metalforming Machine Works,a key enterprise of the Ministry of machinery &electric industry, is specialized in manufacturing, with rich experience, various types of large and heavy duty mechanical and hydraulic presses, die castings, and other special purpose metalforming machines.
上海锻压机床厂是机械电子工业部骨干企业,国家二级企业.专业生产各种专用锻压设备,具有丰富的设计和制造经验.收藏指正
7.Research on the Squeeze Cast Technology of the Castings with Large Ratio of Height to Thickness
大高径比铸件挤压铸造技术研究收藏指正
8.the cast pipe is a large branch in the foundry industry. An annual output of cast pipe is 150 tones , it is about 1/8-1/7 of the total output of castings in our country.
我国铸管业是铸造业中的一个大的分支,每年铸管产量150吨左右,约占全国铸件总产量的1/8～1/7。收藏指正
9.Electrolytic Al-Si alloy(EASA)is characterized by self-modified structure in the castings,where Si particles and iron or Ti-bearing phase exhibit fine structure with a large amount of primary aluminum dendrite.
电解Al-Si合金是一种符合我国矿产资源特点,能耗少、能减轻环境污染的轻质金属。收藏指正
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