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<P><FONT face=宋体>pp管材出现哪些问题,</FONT>河北沧州鸿天塑业有限公司是主要生产<SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体, verdana, arial, helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(100,100,100); FONT-SIZE: 12px; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial" lang=EN-US><A style="COLOR: rgb(100,100,100); TEXT-DECORATION: none" href="http://www.hongtiansuye.com/"><STRONG><SPAN style="COLOR: windowtext; FONT-SIZE: 10.5pt">pp</SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: windowtext; FONT-SIZE: 10.5pt" lang=EN-US><SPAN lang=EN-US>管材</SPAN></SPAN></STRONG></A></SPAN><STRONG style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体, verdana, arial, helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(100,100,100); FONT-SIZE: 12px; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><SPAN style="FONT-SIZE: 10.5pt" lang=EN-US>,</SPAN><SPAN lang=EN-US><A style="COLOR: rgb(100,100,100); TEXT-DECORATION: none" href="http://www.hongtiansuye.com/ProDisplay/index.html"><SPAN style="COLOR: windowtext; FONT-SIZE: 10.5pt">frpp</SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: windowtext; FONT-SIZE: 10.5pt" lang=EN-US><SPAN lang=EN-US>管材</SPAN></SPAN></A></SPAN><SPAN style="FONT-SIZE: 10.5pt" lang=EN-US>,</SPAN><SPAN lang=EN-US><A style="COLOR: rgb(100,100,100); TEXT-DECORATION: none" href="http://www.hongtiansuye.com/jianjie/index.html"><SPAN style="COLOR: windowtext; FONT-SIZE: 10.5pt">pp</SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: windowtext; FONT-SIZE: 10.5pt" lang=EN-US><SPAN lang=EN-US>焊条</SPAN></SPAN></A></SPAN><SPAN style="FONT-SIZE: 10.5pt" lang=EN-US>,</SPAN><SPAN lang=EN-US><A style="COLOR: rgb(100,100,100); TEXT-DECORATION: none" href="http://www.hongtiansuye.com/ContactUs/index.html"><SPAN style="COLOR: windowtext; FONT-SIZE: 10.5pt">pp</SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: windowtext; FONT-SIZE: 10.5pt" lang=EN-US><SPAN lang=EN-US>管件</SPAN></SPAN></A></SPAN></STRONG><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial">、生产<SPAN lang=EN-US>PP</SPAN>(聚丙烯)<SPAN lang=EN-US>FRPP</SPAN>(玻璃纤维增强聚丙烯)<SPAN lang=EN-US>PE</SPAN>(聚乙烯)等材质的管材、管件系列产品。欢迎登录我公司查看详细的产品信息:<FONT face=宋体><A style="COLOR: rgb(100,100,100); TEXT-DECORATION: none" href="http://www.hongtiansuye.com">www.hongtiansuye.com</A></FONT></SPAN></P> <P>pp管材挤出成型时易出现哪些问题?它作为一种生活中使用范围较广的塑料pp管材,自身性能是很全面的,如耐腐蚀,使用时间长等。为保证质量,成型过程中要注意什么呢? </P> <P>1、管材圆周截面壁厚尺寸误差大:成型模具中的口模与芯轴装配后同心度精度差,使两零件间的熔料流道隙不均匀。应调整两零件的同心度精度。管材挤出生产工作一段时间后出现圆周截面壁厚尺寸误差超差现象。这是由于调节口模与芯轴间隙的调节螺钉出现了松动,注意调节螺钉的紧固。 </P> <P> 2、管材发脆:原料中水分或挥发物过多,应对原料进行干燥处理。成型模具压缩比偏小,应适当提高模具对熔料成型的压缩比。口模与芯轴间的平直段尺寸过小,使管坯成型有较明显的纵向熔料熔合线,则pp管材强度降低,应重新修改模具结构。原料中填充料量比份过大也是使管材发脆的一个因素,应修改原料配方。 3、管材外表面粗糙无光泽:成型模具中的口模部位温度控制不合理,过高或过低的工艺温度都会影响管的外表面质量。应适当调节口模的温度。口模内表面粗糙或有残存料。应及时拆卸模具,修光口模的工作面。 </P> <P>4、管材表面有条纹或划痕:成型模具中的口模表面划伤或挂料。应修光口模工作面,清除残料。真空定径套的小圆孔分布不合理或孔径规格不统一,出现微小条纹,应改进定径套抽真空孔的布置</P> <P><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; text-decoration-style: initial; text-decoration-color: initial; -webkit-text-stroke-width: 0px"><FONT face=宋体><FONT face=宋体><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><FONT face=宋体><SPAN><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; BACKGROUND: white; COLOR: #252525; FONT-SIZE: 10.5pt; mso-bidi-font-family: 宋体"><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; BACKGROUND: white; COLOR: #252525; FONT-SIZE: 10.5pt; mso-bidi-font-family: 宋体"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><IMG src="http://www.hongtiansuye.com/upfiles/proimages/20157299394048168.jpg"></SPAN></SPAN></FONT></SPAN></FONT></SPAN></FONT></SPAN></SPAN></FONT></FONT></SPAN></SPAN></SPAN></P> <P><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; text-decoration-style: initial; text-decoration-color: initial; -webkit-text-stroke-width: 0px"><FONT face=宋体><FONT face=宋体><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><FONT face=宋体><SPAN><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; BACKGROUND: white; COLOR: #252525; FONT-SIZE: 10.5pt; mso-bidi-font-family: 宋体"><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; BACKGROUND: white; COLOR: #252525; FONT-SIZE: 10.5pt; mso-bidi-font-family: 宋体"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial">上一条:<A title=pp板材常年出售 href="/hangye/2767.html" target=_blank>pp板材常年出售</A></SPAN></SPAN></FONT></SPAN></FONT></SPAN></FONT></SPAN></SPAN></FONT></FONT></SPAN></SPAN></SPAN></P> <P><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; 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TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"><FONT face=宋体><SPAN><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; BACKGROUND: white; COLOR: #252525; FONT-SIZE: 10.5pt; mso-bidi-font-family: 宋体"><FONT face=宋体><SPAN style="FONT-FAMILY: 宋体; BACKGROUND: white; COLOR: #252525; FONT-SIZE: 10.5pt; mso-bidi-font-family: 宋体"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial">下一条:没有了</SPAN></SPAN></FONT></SPAN></FONT></SPAN></FONT></SPAN></SPAN></FONT></FONT></SPAN></SPAN></SPAN></P> <P><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: white; LETTER-SPACING: normal; COLOR: rgb(37,37,37); FONT-SIZE: 10.5pt; FONT-WEIGHT: 400; WORD-SPACING: 0px; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial"></SPAN> </P>
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