ÿþ <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>How to Choose the Correct Ejector Pin?---Higrade(Qingdao) Moulds & Products Co., Ltd. China stamping die,higrade stamping die|China press die ÿChina progressive company/manufacture/supplier,China sheet metal parts</title> <meta name="keywords" content="How to Choose the Correct Ejector Pin?,China stamping die |China press die ÿChina progressive company ÿmanufacture,supplier,China sheet metal parts"> <meta name="description" content="Located in Qingdao, China, Higrade Stamping specializes in stamping die, progressive die, sheet metal parts, including stainless steel/iron stamping parts, Galvanized sheet stamped parts,and so on.Excellent stamping die manufacturer, supplier."> <link href="../css.css" rel="stylesheet" type="text/css"> <script> function autoResize() { try { document.all["test"].style.height=test.document.body.scrollHeight document.all["testbottom"].style.height=testbottom.document.body.scrollHeight document.all["testtop"].style.height=testtop.document.body.scrollHeight } catch(e){} } </script> </head> <body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0"> <!-- ImageReady Slices (-1) --> <table width="1003" border="0" align="center" cellpadding="0" cellspacing="0" id="__"> <tr> <td colspan="2"><iframe id=testtop style="height:expression(1); aho:expression(autoResize())" src="../top1.asp" scrolling="no" frameborder="0" width="100%"></iframe></td> </tr> <tr> <td width="260" valign="top" background="../images/index_06.jpg" bgcolor="#FAFAFA" style="background-position:top; background-repeat:repeat-x;"><iframe id=test style="height:expression(1); aho:expression(autoResize())" src="../left2.asp" scrolling="no" frameborder="0" width="260"></iframe></td> <td align="center" valign="top" background="../images/index_07.jpg" bgcolor="#FFFFFF" style="background-position:top; background-repeat:repeat-x;"><table width="660" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td height="30"></td> </tr> <tr> <td height="35" background="../images/title.gif" style="background-repeat:no-repeat;"><table width="560" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="44"></td> <td width="328" height="30" valign="top" class="STYLE9-2"><div align="left">News Center</div></td> <td width="188"></td> </tr> </table></td> </tr> <tr> <td height="10" class="STYLE6"></td> </tr> <tr> <td class="STYLE6"><table width="100%" border="0" align="center" cellpadding="0" cellspacing="0" class="STYLE3_5"> <tr> <td height="35"><div align="center"><strong>How to Choose the Correct Ejector Pin?</strong></div></td> </tr> <tr> <td><div align="center"> <table width="90%" border="0" cellspacing="0" cellpadding="0"> <tr> <td class="STYLE6"><DIV align=left> <DIV align=left>There are many different kinds of ejector pins in the market nowadays and it is a challenge for users to select the correct ones. In most cases, selecting an inappropriate ejector pin is wasting resources and creates inefficiency in production.</DIV> <DIV align=left>&nbsp;</DIV> <DIV align=left>Many of us understand the importance of material and related hardness when selecting an ejector pin. However, in this article, we will focus on another important factor and that will be the working temperature.</DIV> <DIV align=left>&nbsp;</DIV> <DIV align=left>Working Temperature<BR>Working temperature is crucial because it affects the lifetime or durability of an ejector pin. For example, if the working temperature is high and the ejector pin being used is made for a low working temperature environment, then the ejector pins will certainly not last long.</DIV> <DIV align=left>&nbsp;</DIV> <DIV align=left>In the market, there are three common types of ejector pins:&nbsp; through hard pins, nitride H13 pins and &nbsp;the newly developed black ejector pins. All of these pins are excellent to use; however, each has its own characteristics and is designed to be used in a specific environment. </DIV> <DIV align=left>&nbsp;</DIV> <DIV align=left>Through Hard Pins<BR>The design of the through hard pins involves the same hardness throughout the diameter of the ejector pin. With this characteristic, the ejector pin can last much longer in working temperatures below 200oC. It is mainly suitable for plastic injection molds.</DIV> <DIV align=left>&nbsp;</DIV> <DIV align=left>Nitride H13 Pins<BR>If the working temperature goes beyond 200oC, then nitride H13 pins will be a much better fit. The reason is that the surface of these pin has a hardness of HRC 65 to 70, which can lead to a much better life expectancy in high working temperatures. These pins are best for die casting.</DIV> <DIV align=left>&nbsp;</DIV> <DIV align=left>Black Ejector Pins<BR>Nitride H13 pins are not suitable for working temperatures that exceed 600oC, so black ejector pins were developed as an option. These pins have a special black surface coating treatment on the entire pin that can sustain working temperatures up to 1,000oC. Also, the special black surface treatment provides additional self lubrication to the ejector pin, making it an excellent fit for automobile injection molding. These pins are suitable for most working temperatures, but the cost of such a pin is higher.</DIV> <DIV align=left>&nbsp;</DIV> <DIV align=left><BR>From the above comparison, it is evident that different types of ejector pins are suitable for different environments, which is why working temperature is a necessary factor to consider before your final selection. 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