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1、.畢業(yè)論文鑄鐵件焊縫設(shè)計(jì)系（部）：專?業(yè)：?Word文檔.目錄畢業(yè)論文開(kāi)題報(bào)告...................................................2畢業(yè)論文任務(wù)書(shū)......................................................3摘要................................................................4引言................................................................5第一章焊接
2、的發(fā)展史..................................................61.1焊接的發(fā)展史..................................................61.2焊接的發(fā)展前景................................................71.2.1國(guó)外概況...............................................71.2.2產(chǎn)品情況..................................................8第
3、二章灰口鑄鐵的焊縫設(shè)計(jì)...........................................92.1?鑄鐵焊接存在的問(wèn)題............................................92.1.1焊后產(chǎn)生白口組織.........................................92.1.2焊接接頭出現(xiàn)裂紋..........................................92.2灰口鑄鐵的化學(xué)成分及力學(xué)性能.................................102.2.1灰口鑄鐵的化學(xué)成分..
4、.....................................102.2.2灰口鑄鐵的力學(xué)性能.......................................102.3常用鑄鐵件的焊接方法.........................................102.3.1熱焊法..................................................11Word文檔.2.3.2冷焊法...................................................112.3.3加熱減應(yīng)焊法...
5、..........................................122.4接頭形式的選擇及坡口的選擇...................................132.4.1焊縫的布置工藝設(shè)計(jì)原則...................................132.4.2接頭形式的選擇...........................................152.4.3坡口的選擇...............................................16第三章焊后檢驗(yàn)...................
6、..................................183.1焊縫外觀及尺寸的檢驗(yàn).........................................183.2致密性檢驗(yàn)...................................................183.3無(wú)損探傷.....................................................183.3.1磁粉探傷的基本原理.......................................183.3.2漏磁場(chǎng)的強(qiáng)度主要取決磁化場(chǎng)的強(qiáng)度和
7、缺陷對(duì)于磁化場(chǎng)垂直截面的影響程度..........................................................193.3.3磁粉探傷的一般程序.......................................193.3.4磁憤探傷的驗(yàn)收標(biāo)準(zhǔn).......................................20結(jié)論............................................................
