有机磨具的特性
<h2 style=\"margin:auto 0cm\"><font face=\"宋体\">有机磨具的特性</font></h2><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">有机磨具使用范围广，具有一定的弹性和较高的结合强度，并具有良好抛光性能。在粗、精、细、抛等磨削工艺中均得到应用，其树脂磨具具有下列特点：</font></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span><strong><span style=\"mso-bidi-font-weight:normal\">1</span></strong></span><strong><span style=\"font-family:宋体;mso-bidi-font-family:宋体;mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\';mso-bidi-font-weight:normal\">、结合强度高</span></strong><span lang=\"EN-US\"><p></p></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">与陶瓷结合剂相比，树脂结合剂结合强度高，其树脂砂轮磨削线速度达</font></span><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\">80~120m/s</span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">，并可承受较大的磨削压力。重负荷砂轮磨削压力高达</font></span><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\">10</span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">×</font></span><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\">10<sup>4</sup></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">～</font></span><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\">40</span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">×</font></span><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\">10<sup>4</sup>N</span><font face=\"宋体\"><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\">，广泛应用于钢铁工业，如各种钢锭、</span><span lang=\"EN-US\" style=\"font-family:\'times new roman\';mso-bidi-font-family:宋体\"><a href=\"http://www.hj9411.com/\"><span lang=\"EN-US\" style=\"font-family:宋体;mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><span lang=\"EN-US\">钢坯</span></span></a></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\">等荒磨工序。高速重负荷专用砂轮等粗磨加工具有操作安全，适合高速磨削和大进给磨削，磨削效率高。</span></font></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span><strong><span style=\"mso-bidi-font-weight:normal\">2</span></strong></span><strong><span style=\"font-family:宋体;mso-bidi-font-family:宋体;mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\';mso-bidi-font-weight:normal\">、具有一定的弹性</span></strong><span lang=\"EN-US\"><p></p></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span></span><font face=\"宋体\"><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\">相对陶瓷磨具树脂磨具具有良好的韧性，有一定的可塑性和延展性。其弹性模量（</span><em><span lang=\"EN-US\" style=\"mso-bidi-font-style:normal\">E</span></em><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\">）比陶瓷低几十倍。所以，树脂磨具适宜于制备各种规格的薄片砂轮和高速切割砂轮。同时，由于有一定的弹性变形，可以缓冲磨削力的作用。因而磨削效果好，有抛光效果，能提高加工表面的粗糙度。</span></font></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span><strong><span style=\"mso-bidi-font-weight:normal\">3</span></strong></span><strong><span style=\"font-family:宋体;mso-bidi-font-family:宋体;mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\';mso-bidi-font-weight:normal\">、能制成各种复杂形状和特殊要求的磨具</span></strong><span lang=\"EN-US\"><p></p></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt;text-indent:21.75pt\"><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\" size=\"3\">由于树脂结合剂磨具硬化温度低，可常温硬化，收缩率较小，可制成各种复杂形状和特殊要求的磨具。如：采用玻璃纤维增强的树脂砂轮，易排屑、散热性好的多孔树脂砂轮和沟槽砂轮；改善磨削工艺条件的螺栓紧固砂轮、电解磨削砂轮、抛光砂轮；以及筒形、碗形、蝶形等异形砂轮。</font></span></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span><strong><span style=\"mso-bidi-font-weight:normal\">4</span></strong></span><strong><span style=\"font-family:宋体;mso-bidi-font-family:宋体;mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\';mso-bidi-font-weight:normal\">、适用范围广</span></strong><span lang=\"EN-US\"><p></p></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">由于新型树脂结合剂品种多，可以制成各种强度和性能的树脂磨具。因而，可广泛用于荒磨、粗磨、切割、半精磨、精磨、抛光等工序。树脂磨具结合强度高，使用速度高，耐冲击，适于粗磨和荒磨加工；树脂磨具具有良好的韧性，适用于切割加工工序；树脂磨具弹性好，有一定的抛光性，可用于精磨和抛光加工。树脂磨具耐热性较低，易磨损，适用于平面磨和精磨加工。</font></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span><strong><span style=\"mso-bidi-font-weight:normal\">5</span></strong></span><strong><span style=\"font-family:宋体;mso-bidi-font-family:宋体;mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\';mso-bidi-font-weight:normal\">、有利于防止被磨削工件产生烧伤</span></strong><span lang=\"EN-US\"><p></p></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span></span><font face=\"宋体\"><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\">树脂结合剂耐热性较低，可减少或避免烧伤工件现象。工件在磨削过程中产生的热量，首先使树脂炭化，促使钝化了的磨料自动脱落，露出新的锋利的磨粒，降低了</span><span lang=\"EN-US\" style=\"font-family:\'times new roman\';mso-bidi-font-family:宋体\"><a href=\"http://www.hj9411.com/\"><span lang=\"EN-US\" style=\"font-family:宋体;mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><span lang=\"EN-US\">磨削</span></span></a></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\">区域的热量，避免了工件烧伤。</span></font></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span><strong><span style=\"mso-bidi-font-weight:normal\">6</span></strong></span><strong><span style=\"font-family:宋体;mso-bidi-font-family:宋体;mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\';mso-bidi-font-weight:normal\">、树脂磨具硬化温度低，生产周期短，设备简单</span></strong><span lang=\"EN-US\"><p></p></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">有利于专业化生产。不足之处在于：</font></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">（</font></span><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\">1</span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">）树脂磨具耐碱性、耐水性较差，易老化。一般有效存放期为一年。因此，不能长期存放。</font></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt\"><font size=\"3\"><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\"><span style=\"mso-spacerun:yes\"> </span></span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">（</font></span><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\">2</span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">）树脂磨具耐热性较低，磨削加工时，磨耗较大，不适于定型成形磨削。</font></span></font></p><p class=\"MsoNormal\" style=\"margin:0cm 0cm 0pt;text-indent:24pt;mso-char-indent-count:2.0\"><font size=\"3\"><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">（</font></span><span lang=\"EN-US\" style=\"font-family:\'times new roman\'\">3</span><span style=\"mso-ascii-font-family:\'times new roman\';mso-hansi-font-family:\'times new roman\'\"><font face=\"宋体\">）树脂磨具气孔率低，加工有气味，应注意环境污染问题。</font></span></font></p>
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