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濮陽(yáng)技術(shù)好的304不銹鋼盤(pán)管今日行情
發(fā)布者:管理員 發(fā)布時(shí)間:2021/7/6 閱讀:1296

濮陽(yáng)304不銹鋼盤(pán)管新聞


不銹鋼毛細(xì)管退火的目的:主要目的是均勻模具鋼的化學(xué)成分及組織,細(xì)化晶粒,調(diào)整硬度,消除應(yīng)力和加工硬化,改善鋼的成形及切削加工性能,并為淬火做好組織準(zhǔn)備。
   不銹鋼毛細(xì)管不含硫化鐵,對(duì)人體的危害小,而其它砂輪片大多含有這個(gè)。
 不銹鋼毛細(xì)管是無(wú)磁或弱磁性,而馬氏體或鐵素體是帶磁性的,由于冶煉時(shí)成分偏析或熱處理不當(dāng),會(huì)造成奧氏體304不銹鋼管中少量馬氏體或鐵素體組織。這樣,304不銹鋼管中就會(huì)帶有微弱的磁性。 另外,304不銹鋼管經(jīng)過(guò)冷加工,組織結(jié)構(gòu)也會(huì)向馬氏體轉(zhuǎn)化,冷加工變形度越大,馬氏體轉(zhuǎn)化越多,鋼的磁性也越大。如同一批號(hào)的鋼帶,生產(chǎn)Φ76管,無(wú)明顯磁感,生產(chǎn)Φ9.5管。不銹鋼毛細(xì)管因泠彎變形較大磁感就明顯一些,生產(chǎn)方矩形管因變形量比圓管大,特別是折角部分,變形更激烈磁性更明顯。


濮陽(yáng)304不銹鋼盤(pán)管簡(jiǎn)介


如果這一方案既能滿足盤(pán)管的質(zhì)量要求,又最大限度地降低各種成本費(fèi)用、生產(chǎn)準(zhǔn)備周期,那么,它所形成的方案將是最佳方案。我們已經(jīng)知道,雖然拉彎成形成形此盤(pán)管是可行的,但不能形成盤(pán)管的下陷。所以盤(pán)管的下陷只能采用其他的方法成形。在材料分析中,我們知道,此材料在常溫下成形有一定難度,加之盤(pán)管的材料厚度為啄2.03mm,下陷深度1.5mm,尤其是拉彎成形后材料硬度增大,成形困難,貼胎度無(wú)法保證。經(jīng)查閱資料,該材料在冷成形后可以通過(guò)進(jìn)行固溶熱處理消除內(nèi)應(yīng)力,使盤(pán)管容易成形,所以,我們可以利用將拉彎后的盤(pán)管進(jìn)行固溶熱處理(溫度1052益依14)后再成形。2.2加工成形方案的初步確定,
綜合以上的分析、論證,可以得出以下結(jié)論:在充分考慮質(zhì)量、成本、周期三因素的前提下,針對(duì)此類盤(pán)管的最佳加工方案只能是:拉彎+固溶熱處理+成形下陷+手工敲修的復(fù)合成形。雖然從嚴(yán)格意義上說(shuō),這一加工方案是幾種加工方法的“大雜燴”,但它充分利用了公司內(nèi)部的設(shè)備資源。



濮陽(yáng)304不銹鋼盤(pán)管知識(shí)


實(shí)施加工方案
3.1根據(jù)確定的加工方案,初步編制工藝流程下料→閘壓直角材→拉彎→固溶熱處理→成形下陷→去余量→手工敲修按初步擬定的工藝流程試加工兩件盤(pán)管:將盤(pán)管在電爐中固溶熱處理加熱后用成形模成形下陷,發(fā)現(xiàn)盤(pán)管拉彎時(shí)已成形的R角移位,使得彎邊的高度比圖紙小,而且下陷尺寸不到位。經(jīng)分析:R角移位是因?yàn)槔瓘澓笠虮P(pán)管回彈,弧度不到位,無(wú)法與成形模貼胎所致;下陷尺寸不到位是因?yàn)槌尚文J钦w成形,下陷處壓力不足使得成形的下陷深度不夠。因此,針對(duì)以上兩點(diǎn)采取如下措施并調(diào)整工藝流程:(1)拉彎并進(jìn)行固溶熱處理工序,消除盤(pán)管的內(nèi)應(yīng)力,然后對(duì)盤(pán)管修正收邊至符合成形模型面的弧度。(2)在成形模上校正盤(pán)管弧面。(3)新增兩套局部下陷模,單獨(dú)成形盤(pán)管下陷。(4)新增一套凸模胎,與敲修模相配用于修整盤(pán)管型面。


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