{"id":22080,"date":"2023-07-29T11:46:08","date_gmt":"2023-07-29T03:46:08","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=22080"},"modified":"2023-07-29T11:46:08","modified_gmt":"2023-07-29T03:46:08","slug":"4-important-technical-points-for-the-machining-of-engine-cylinder-heads","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/zh\/4-important-technical-points-for-the-machining-of-engine-cylinder-heads\/","title":{"rendered":"\u53d1\u52a8\u673a\u7f38\u76d6\u52a0\u5de5\u76844\u4e2a\u91cd\u8981\u6280\u672f\u70b9"},"content":{"rendered":"
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\"\"<\/p>\n

\u53d1\u52a8\u673a\u6c14\u7f38\u76d6\u7ed3\u6784\u7279\u70b9<\/h1>\n

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 <\/p>\n

2\u516d\u9762\u4f53\u5f62\u72b6\uff1a\u5927\u591a\u6570\u6c14\u7f38\u76d6\u4e3a\u516d\u9762\u4f53\u5f62\u72b6\uff0c\u5f00\u53e3\u591a\uff0c\u539a\u5ea6\u8f83\u8584\u3002\u6c14\u7f38\u76d6\u52a0\u5de5\u5de5\u5e8f\u7e41\u591a\uff0c\u52a0\u5de5\u5de5\u5e8f\u6700\u591a\u53ef\u8fbe100\u9053\u3002\u94f8\u9020\u6c14\u7f38\u76d6\u6700\u8584\u5904\u53ef\u8fbe4.5mm\u3002<\/p>\n

\"\u6c14\u7f38\u76d6\"<\/p>\n

\u53d1\u52a8\u673a\u6c14\u7f38\u76d6\u7684\u7c97\u52a0\u5de5\u5de5\u827a<\/h1>\n

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 <\/p>\n

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 <\/p>\n

3Finally, in the machining process, it is crucial to ensure uniform cooling of the casting. Neglecting this aspect can lead to surface looseness in some parts of the rough castings. It is essential to continuously monitor the pouring temperature to avoid failures in the cylinder head. Therefore, during the rough machining of the engine cylinder head, attention should be paid to each step, ensuring correct and diligent operations to guarantee the coordination of the cylinder head’s components and prevent various defects.<\/p>\n

 <\/p>\n

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\u5e73\u9762\u52a0\u5de5\u5de5\u827a<\/h2>\n

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\u9ad8\u7cbe\u5ea6\u5b54\u52a0\u5de5<\/h2>\n

During mechanical machining processes, there are instances where high precision and concentricity are required for certain positions. In such cases, high-precision hole machining is performed on the components. Using the center through-hole’s center as the reference coordinate, a positioning datum is established. The requirement is for the hole’s center to coincide with the extension of the center through-hole’s diameter. The coordinates for the first hole are determined on the machining center, and then drilling is carried out with the appropriate diameter.<\/p>\n

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\u6c14\u7f38\u76d6\u6c14\u95e8\u548c\u5bfc\u5411\u5b54\u7684\u52a0\u5de5<\/h2>\n

This part of the machining process directly affects the engine’s performance. During engine operation, the combustible gas is compressed in the cylinder head’s combustion chamber before ignition, resulting in high temperatures in the valves. Therefore, the cylinder head valves must be able to withstand high thermal loads and possess good wear resistance. Additionally, to ensure the coaxiality tolerance of the valve seat and guide hole bottom, it is essential to maintain stable tolerance data and choose the correct position for the positioning datum.<\/p>\n

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 <\/p>\n

\"\"<\/p>\n

\u6c14\u7f38\u76d6\u52a0\u5de5\u8fc7\u7a0b\u4e2d\u7684\u6bdb\u523a<\/h2>\n

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One method to remove burrs is by using water jet cutting. High-pressure water jets are used to physically impact and flush the bottom of the cylinder head’s internal holes and difficult-to-clean areas. The ease of high-pressure water jet flushing depends on the hardness of the burrs. When the burr hardness reaches about ten micrometers, the required pressure for the high-pressure water jet is below 30MPA. However, when the burr hardness increases to over one hundred micrometers, higher pressure might be needed for the water jet to effectively cut through the burrs at their roots. The combination of high-pressure water jet action and cutting can completely remove the burrs efficiently and in an environmentally friendly and energy-saving manner.<\/p>\n

\"\"<\/p>\n

\u7ed3\u8bba<\/h1>\n

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<\/p>","protected":false},"excerpt":{"rendered":"

The cylinder head is one of the crucial components of an engine, and it is installed above the cylinder block. It seals the top of the cylinders and forms the combustion chamber. The cylinder head is frequently exposed to high-temperature and high-pressure combustion gases, making it subject to significant thermal and mechanical loads. In water-cooled…<\/p>","protected":false},"author":2,"featured_media":22082,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[107],"tags":[],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2023\/07\/\u56fe\u72477-4.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/posts\/22080"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/comments?post=22080"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/posts\/22080\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/media\/22082"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/media?parent=22080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/categories?post=22080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/zh\/wp-json\/wp\/v2\/tags?post=22080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}