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This method can realize to reverse the wheel's moulds by its casting model., The casting moulds can be prepared by sintering precoated resin sand using SLS technology. Subsequently appropriate treatment to the moulds, the wheel-shaped aluminum, iron, and steel castings were poured successfully.

该工艺可由铸件三维数字实体模型&反求&精铸型壳实体模型，利用SLS技术直接烧结覆膜树脂砂，制造型壳，然后对铸型经过适当后处理，浇注了3种材质的金属件。

Valve Casting is casting the leading one of the products, the market demand for a great year.

阀门铸件是铸件中的主导产品之一，市场年需求量很大。

The numerical simulation of temperature field and shrinkage defect prediction for a valve casting, which was involved in 4 kinds of casting proces.

对采用 4种不同铸造工艺方案的阀体铸件凝固过程进行了数值模拟及缺陷预测，获得了与试验相一致的模拟结果。

Jinyun Dongdu foundry long been engaged in the valve, machinery casting, casting valves are rich in experience in the production of long-term practice.

缙云东渡铸造厂长期从事阀门、机械铸造，有丰富的阀门铸造经验，在长期的生产实践过程。

Improved Statistical Analysis of valve casting scrap After taking the above measures for improvement of the waste valve casting defects in the type of statistics in Table 3 and Table 4.

改进后阀门铸件废品情况统计分析采取上述改进措施后，对阀门铸件的废品情况缺陷类型统计见表3和表4。

Steel Plant (hereinafter referred to as the factory) is a sand casting, Investment Casting and valve production and service of professional chemical factory.

成都市新都立新金属制造有限公司立新铸钢厂是集砂型铸造、熔模精密铸造及阀门生产和服务的专业化工厂。

Meanwhile, the valve industry cope with Casting and Forging of the raw material selection, casting, forging process, heat treatment and other sectors to take effective measures to rough castings and forgings, including in terms of quality and appearance quality to reach international standards.

同时，阀门行业应对铸锻件的原材料选用、铸造工艺、锻造工艺、热处理等环节采取有效措施，使铸锻件毛坯在内在质量和外观质量达到国际水平。

Is located in the "Chinese Hometown of Pump and Valve"- Oubei Town, the company was founded in 1984, is a company specializing in producing all kinds of stainless steel valve castings and valve businesses, Jiangdu Enterprise After 20 years of arduous pioneering, innovation has become stronger with the industry production capacity, the larger professional stainless steel valve casting and production factories, rich valves casting and production experience and advanced technical equipment, Strict Products in accordance with the ISO9001 quality standard for production, has formed a production scale, and management procedures, and quality assurance system, and customers in the industry won the trust and praise.

浙江永嘉县江都机械有限公司座落在&中国泵阀之乡&--瓯北镇，公司始创于1984年，是一家专业生产各种不锈钢阀门与阀门铸件的企业，江都企业经过20多年的艰苦创业，开拓创新，至今已成为同行业生产能力较强，规模较大的专业不锈钢阀门铸造及生产厂家，拥有丰富的阀门铸造与生产经验和先进的技术设备，产品严格按照ISO9001质量标准生产，已形成了生产规模化、管理程序化、质量保证体系化，在行业内深得客户信赖与好评。

But utility time of this technology is not long at home, in addition, the majority of equipment is two-hand at home, and the craft technology was not introduced with it, so the people's understanding is limited to cast the copper alloy blank using the horizontal continuous casting method, the basic data lacks extremely, the copper alloy materials blank's quality is unstable, more than all, the research to the key component Graphite Crystallizer is insufficient, it affected the application of horizontal continuous casting in a certain.

但这一技术由于国内使用的时间不长，加之国内引进的大多数是二手设备，对工艺技术没有进行引进，因而人们对铜合金带坯的水平连铸生产方法认识有限，基础资料十分缺乏，生产的坯料质量不稳定，特别是对关键部件石墨结晶器研究不够深入，在一定程度上影响了水平连铸方法在铜合金带坯生产中的应用。

Section views of the casting along with X-ray photographs can be seen in Figure 3. A pressure-tight power train casting, the oil pump filter housing requires leak tightness at 5 bar.

铸件剖面及铸件 X 射线照片如图3所示，此产品是需要承受高压的铸件，油泵过滤器壳体需要的防漏压密封压力为5 bar 。

When I started coding, I had problems with the ASF file writer.

当我开始编码，我曾与ASF文件作家的问题。

I know that in one of the schools the boys have risen up in the classroom and enlisted in a mass.

如果你们也和他们一样，是集体自愿的话，你们的老师将是多么地光荣啊。