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<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; FONT: 12px/20px Simsun; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px"><SPAN style="PADDING-BOTTOM: 5px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; DISPLAY: inline; HEIGHT: auto; PADDING-TOP: 0px" class=lemmaTitleH1><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">
<P><STRONG style="TEXT-ALIGN: left; PADDING-BOTTOM: 0px; LINE-HEIGHT: 19px; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(239,239,239); FONT-VARIANT: normal; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 13px; WORD-SPACING: 0px; PADDING-TOP: 0px; -webkit-text-stroke-width: 0px"><SPAN><A href="http://www.hbjjnnj.cn/"><SPAN style="FONT-FAMILY: '宋体'; COLOR: rgb(0,0,255); FONT-SIZE: 12pt; TEXT-DECORATION: underline; mso-spacerun: 'yes'" class=15>孟村管件</SPAN></A></SPAN><SPAN><A href="http://www.hbjjnnj.cn/"><SPAN style="FONT-FAMILY: '宋体'; COLOR: rgb(0,0,255); FONT-SIZE: 12pt; TEXT-DECORATION: underline; mso-spacerun: 'yes'" class=15>http://www.hbjjnnj.cn</SPAN></A></SPAN></STRONG></P></SPAN></SPAN></DIV>
<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; FONT: 12px/20px Simsun; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px"><SPAN style="PADDING-BOTTOM: 5px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; DISPLAY: inline; HEIGHT: auto; PADDING-TOP: 0px" class=lemmaTitleH1><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">按法兰密封面型式的不同，常用的法兰有突面法兰（也称平面法兰）、凹凸面法兰、榫槽面法兰<SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">三种。突面法兰的密封面是平面，与垫片接触面积较大，预紧后垫片易向两侧伸展或移动，密封性较差，只适合低压场合。凹凸面法兰、榫槽面法兰密封性较好，适合压力更高的场合。<BR></DIV></SPAN></SPAN></SPAN>
<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; FONT: 12px/20px Simsun; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px"><SPAN style="PADDING-BOTTOM: 5px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; DISPLAY: inline; HEIGHT: auto; PADDING-TOP: 0px" class=lemmaTitleH1><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px"><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px"></SPAN></SPAN></SPAN>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>主要生产工艺主要分为锻造、铸造、割制、卷制这四种。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>铸造出来的法兰，毛坯形状尺寸准确，加工量小，成本低，但有铸造缺陷（气孔、裂纹、夹杂）；铸件内部组织流线型较差（如果是切削件，流线型更差）；</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para><A style="COLOR: rgb(0,0,0); FONT-SIZE: 9pt; TEXT-DECORATION: none" href="http://www.czkrtgj.com/falan/590.html">锻造法兰</A>含碳低，一般比铸造法兰不易生锈，且锻件流线型好，组织比较致密，机械性能优于铸造法兰；</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>锻造工艺不当也会出现晶粒大或不均，硬化裂纹现象，锻造成本高于铸造法兰。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>锻件比铸件能承受更高的剪切力和拉伸力。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>铸件的优点在于可以搞出比较复杂的外形，成本比较<SPAN style="TEXT-INDENT: 2em">低；</SPAN></DIV><SPAN style="LINE-HEIGHT: 24px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px"><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px"></SPAN></SPAN>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>锻件优点在于内部组织均匀，不存在铸件中的气孔，夹杂等有害缺陷；</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>从生产工艺流程区别铸造法兰和锻造法兰的不同，比如离心法兰就属于铸造法兰的一种。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>离心法兰属于精密铸造方法生产法兰，该种铸造较普通砂型铸造组织要细很多，质量提高不少，不易出现组织疏松、气孔、沙眼等问题。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>首先我们需要了解离心法兰是怎样生产制作的，离心浇铸制做<A style="COLOR: rgb(0,0,0); FONT-SIZE: 9pt; TEXT-DECORATION: none" href="http://www.czkrtgj.com/falan/592.html">平焊法兰</A>的工艺方法及产品，其特征是该产品经过下列工艺步骤加工而成：</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>①将所选原材料钢材放入中频电炉熔炼，<SPAN style="TEXT-INDENT: 2em">使钢水温度达到1600－1700℃；</SPAN></DIV><SPAN style="LINE-HEIGHT: 24px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px"><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px"></SPAN></SPAN>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>②将金属模具预加热到800－900℃保持恒温；</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>③起动离心机，将步骤①中钢水注入步骤②中预热后金属模具；</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>④铸件自然冷却到800－900℃保持1－10分钟；</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>⑤用水冷却至接近常温，脱模取出铸件。</DIV><SPAN style="LINE-HEIGHT: 24px; FONT-FAMILY: 微软雅黑, 黑体, Verdana; WHITE-SPACE: normal; FONT-SIZE: 24px">生产工艺流程</SPAN><BR></DIV>
<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; FONT: 12px/20px Simsun; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px"><SPAN style="LINE-HEIGHT: 24px; FONT-FAMILY: 微软雅黑, 黑体, Verdana; WHITE-SPACE: normal; FONT-SIZE: 24px"></SPAN>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>锻造工艺过程一般由以下工序组成，即选取优质钢坯下料、加热、成形、锻后冷却。锻造的工艺方法有自由锻、模锻和胎膜锻，生产时，按锻件质量的大小，生产批量的多少选择不同的锻造方法。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>自由锻生产率低，加工余量大，但工具简单，通用性大，故被广泛用于锻造形状较简单的单件、小批生产的锻件。自由锻设备有空气锤、蒸汽-空气锤和水压机等，分别适合小、中和大型锻件的生产。模锻生产率高，操作简单，容易实现机械化和自动化。模锻件尺寸精度高，机械加工余量小，锻件的纤维组织分布更为合理，可进一步提高零件的使用寿命。</DIV>
<H3 style="PADDING-BOTTOM: 0px; LINE-HEIGHT: 19px; MARGIN: 20px 0px 12px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: 微软雅黑, 黑体, Verdana; WHITE-SPACE: normal; CLEAR: both; FONT-SIZE: 18px; FONT-WEIGHT: 500; PADDING-TOP: 0px" class=headline-2><SPAN class=headline-content>自由锻</SPAN></H3>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>自由锻造时，锻件的形状是通过一些基本变形工序将坯料逐步锻成的，自由锻造的基本工序有镦粗、拔长、冲孔、弯曲和切断等。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>1.镦粗 镦粗是对原坯料沿轴向锻打，使其高度减低、横截面增大的操作过程。这种工序常用于锻造齿轮坯和其他圆盘形类锻件。镦粗分为全部镦粗和局部锻粗两种。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>2.拔长 拔长是使坯料的长度增加，截面减小的锻造工序，通常用来生产轴类件毛坯，如车床主轴、连杆等。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>3.冲孔 用冲子在坯料上冲出通孔或不通孔的锻造工序。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>4.弯曲 使坯料弯曲成一定角度或形状的锻造工序。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>5.扭转 使坯料的一部分相对另一部分旋转一定角度的锻造工序。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>6.切割 分割坯料或切除料头的锻造工序。</DIV>
<H3 style="PADDING-BOTTOM: 0px; LINE-HEIGHT: 19px; MARGIN: 20px 0px 12px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: 微软雅黑, 黑体, Verdana; WHITE-SPACE: normal; CLEAR: both; FONT-SIZE: 18px; FONT-WEIGHT: 500; PADDING-TOP: 0px" class=headline-2><SPAN class=headline-content>模锻</SPAN></H3></DIV>
<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; FONT: 12px/20px Simsun; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px">
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>模锻全称为模型锻造，将加热后的坯料放置在固定于模锻设备上的锻模内锻造成形的。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>1.模锻的基本工序：下料、加热、预锻、终锻、冲连皮、切边、调质、喷丸，常用工艺有镦粗、拔长、折弯、冲孔、成型。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>2.常用模锻设备：模锻锤、热模锻压力机、平锻机和摩擦压力机等。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>通俗地讲，锻造法兰质量更好，且一般是通过模锻生产，其晶体组织细密，强度高，当然价格也贵一些。</DIV>
<DIV style="LINE-HEIGHT: 24px; TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px" class=para>无论是铸造法兰还是锻造法兰都属于法兰常用制造方法，如果对需要使用的部件的强度要求不高，还可以选用车削制法兰。</DIV></DIV>
<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT: 14px/24px arial, 宋体, sans-serif; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px" class=para>
<H3 style="PADDING-BOTTOM: 0px; LINE-HEIGHT: 19px; MARGIN: 20px 0px 12px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: 微软雅黑, 黑体, Verdana; WHITE-SPACE: normal; CLEAR: both; FONT-SIZE: 18px; FONT-WEIGHT: 500; PADDING-TOP: 0px" class=headline-2><SPAN class=headline-content>割制法兰</SPAN></H3></DIV>
<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT: 14px/24px arial, 宋体, sans-serif; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px" class=para><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">在中板上直接切割出法兰的留有加工量的内外径及厚度的圆盘，</SPAN><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">再进行螺栓孔及水线的加工。</SPAN><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">这样生产出来的法兰就叫做割制法兰，</SPAN><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">此类法兰最大直径以中板的幅宽为限。</SPAN><BR></DIV>
<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT: 14px/24px arial, 宋体, sans-serif; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px" class=para><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">
<H3 style="PADDING-BOTTOM: 0px; LINE-HEIGHT: 19px; MARGIN: 20px 0px 12px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: 微软雅黑, 黑体, Verdana; WHITE-SPACE: normal; CLEAR: both; FONT-SIZE: 18px; FONT-WEIGHT: 500; PADDING-TOP: 0px" class=headline-2><SPAN class=headline-content>卷制法兰</SPAN></H3></SPAN></DIV>
<DIV style="TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 2em; MARGIN: 15px 0px 5px; FONT: 14px/24px arial, 宋体, sans-serif; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(51,51,51); WORD-SPACING: 0px; -webkit-text-stroke-width: 0px" class=para><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px"><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">用中板割条子然后卷制成圆的工艺叫做卷制，</SPAN><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">多用于一些大型法兰的生产。</SPAN><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">卷制成功之后进行焊接，</SPAN><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">然后压平，</SPAN><SPAN style="LINE-HEIGHT: 24px; TEXT-INDENT: 28px; FONT-FAMILY: arial, 宋体, sans-serif; WHITE-SPACE: normal; COLOR: rgb(51,51,51); FONT-SIZE: 14px">再进行水线及螺栓孔的工艺的加工。</SPAN></SPAN></DIV>
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<P><STRONG style="TEXT-ALIGN: left; PADDING-BOTTOM: 0px; LINE-HEIGHT: 19px; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(239,239,239); FONT-VARIANT: normal; FONT-STYLE: normal; TEXT-INDENT: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; LETTER-SPACING: normal; COLOR: rgb(0,0,0); FONT-SIZE: 13px; WORD-SPACING: 0px; PADDING-TOP: 0px; -webkit-text-stroke-width: 0px"><SPAN><A href="http://www.hbjjnnj.cn/"><SPAN style="FONT-FAMILY: '宋体'; COLOR: rgb(0,0,255); FONT-SIZE: 12pt; TEXT-DECORATION: underline; mso-spacerun: 'yes'" class=15>孟村管件</SPAN></A></SPAN><SPAN><A href="http://www.hbjjnnj.cn/"><SPAN style="FONT-FAMILY: '宋体'; COLOR: rgb(0,0,255); FONT-SIZE: 12pt; TEXT-DECORATION: underline; mso-spacerun: 'yes'" class=15>http://www.hbjjnnj.cn</SPAN></A></SPAN></STRONG></P></SPAN></SPAN></DIV>

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