Discussing various influence factors of ductile iron's surface blowhole defects indicates that bringing various gases in the molten metal or on the interface with the sand mould is inevitable.

No surface blowhole formed in cast pipe when the amount of gas evolution from the coating of pipe model for water-cooled centrifugal cast was less than 5.5mL/g.

当水冷法管模涂料发气量≤55mL/g时，铸管表面不产生气孔缺陷。

Study on Making Use of Graphitizing Expansion to Eliminate Surface Blowhole of Ductile Cast Iron

利用石墨化膨胀消除球铁皮下气孔的研究

Study of Influence Factors on Surface Blowhole in Ductile Iron Casting

球铁件皮下气孔影响因素的研究

The test shows that no surface blowhole formed when the amount of gas evolution was less than 5ml/ g.

试验表明，只要涂料发气量小于5ml/g，铸管不会产生表面气孔。

The reservoir space has the multi-origins, by primary blowhole and secondary corrosion hole primarily.

储集空间具有多成因性，以原生气孔和次生溶蚀孔为主。

The effect of alloy composition and original gas content on secondary blowhole is also studied. The Blowhole and Quality of Castings

研究合金成份和原始含气量对生成二次气孔的影响。铸件型腔气体和铸件品质

Main Elements of Secondary Blowhole in Silicon and Aluminum Alloy

影响铝硅合金中二次气孔的主要因素

The morphology and formation reason of the slag blowhole, judgement and prevention measures of the defect were described.

阐述渣气孔的分布和形态、渣气孔的成因、缺陷判断和防止措施。

Casting Technique of the Aluminum Alloy Right Box and Prevention of Slag Blowhole Defects

铝合金右箱体铸造工艺及渣气孔缺陷防止

Features and operation of steam turbine for driving blower of a 330 kt/ asulphur-burning sulphuric acid plant

330kt/a硫磺制酸装置风机驱动汽轮机的特点及运用

Problems in Steam Driven Gas Blower and the Improvement Measures

汽动煤气鼓风机存在问题及改进措施

Modification of the Sealing of Long Retractable Steam Soot Blower

锅炉长伸缩式蒸汽吹灰器密封改造

This paper presents the cause of severe coking, and theoretical basis for installing steam blower in burner area as well as the application result.

为此介绍了锅炉水冷壁严重结焦的原因和在燃烧器区域加装蒸汽吹灰器的理论依据及加装后的效果。

Install Steam Blower on Water Wall tube of 410 t/ h Boiler Burner Region

410t/h锅炉燃烧器区域水冷壁加装蒸汽吹灰器的实践

Then through the test and analysis of the jet blower, the relationship between jet blower parameters and its performance is demonstrated.

然后通过对射流风机的实验研究，得出了射流风机的各种参数和射流风机性能的关系。

The optimum parameter is obtained, which provides a theoretical foundation for the jet blower actual manufacture.

并得出最优的参数，为射流风机的实际制作提供了理论依据。

Comparison and preliminary analysis are made between two design schemes of pumping with exhaust blower and injecting with injector for the investment and energy consumption in operation at given engine exhaust conditions.

在给定的航空发动机排气条件下，对高空台排气系统中抽气机抽气和引射器引气这两种设计方案的投资和运行能耗进行了对比和简要的分析。

Energy Saving Application of One-driving-two Frequency Converter in the Exhaust Blower of 109m~ 2 Fluidized Roasting Furnace

一拖二高压变频器在109m~2沸腾焙烧炉排烟机中的节能应用

Controlled disposal of radioactive effluents exhaust blower discharge damper

放射性排出物检查处置抽风机排出口调节门

An Economical Analysis between Pumping with Exhaust Blower and Injecting with Injector to Establish Engine Nozzle Conditions

抽气机抽气与引射器引气建立发动机喷口环境条件的经济分析