排氣芯骨在水冷排氣歧管生產(chǎn)中的應用

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摘要：探討了工藝孔數(shù)量及位置對水冷排氣歧管鑄造性能的影響。使用一種新型排氣和支撐兩用的芯骨，解決了工藝孔設(shè)置較少的排氣歧管產(chǎn)品的斷芯、嗆火、起皮等鑄造缺陷，保證鑄件的生產(chǎn)，提高了排氣歧管產(chǎn)品的鑄造成品率，得到客戶的認可，并取得良好的效果。

關(guān)鍵詞：排氣歧管排氣歧管；工藝孔；芯骨；起皮；排氣

Application of exhaust core bone in the production of water-cooled exhaust manifold

JIN Bao， YUAN Bin， YUAN Chaolin， CHEN Bo， CUI Zhixue

Xixia County Internal Combustion Engine Intake Pipe Limited Liability Company， Xixia 474500， Henan， China

Abstract： This article explores the influence of the number and position of process holes on the casting performance of water-cooled exhaust manifolds. The use of a new type of dual purpose core bone for exhaust and support has solved casting defects such as core breakage， choking， and peeling in water jacket products with fewer process holes， ensured the production of castings， improved the casting yield of water jacket products， gained customer recognition， and achieved good results.

Keywords： water jacket exhaust manifold；process hole；core bone；peeling；exhaust

1 序言

內(nèi)燃機排氣歧管是大功率發(fā)動機的重要鑄鐵零部件，結(jié)構(gòu)復雜，工作環(huán)境惡劣，分內(nèi)外兩層，內(nèi)層排氣，外層通水，通過循環(huán)水來降低排氣歧管的溫度，減少排氣歧管對外的熱輻射，從而降低發(fā)動機機艙的環(huán)境溫度，應用前景廣闊，但雙層結(jié)構(gòu)設(shè)計也增加了鑄造難度。（剩余1693字）