<SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''''''Times New Roman''''''''; mso-hansi-font-family: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-bidi-font-family: ''''''''Times New Roman''''''''; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">以及产品对模具的要求不断提电火花表面修复和强化技术介绍目前，随着模具产业的不断发展及应用。高，越来越多的高端精密模具投入使用，在模具不断的使用过程中，不可避免的会出现对模具的伤害，诸如磨损、划伤、针孔、裂纹以及缺损等缺陷。传统的修复设备再一定程度上，帮助客户对模具进行修复以节约成本。但也不可避免的出现了一些问题，如修复模具后造成模具变形、硬度降低、内应力、沙眼、损伤甚至报废。　　本公司的产品精密模修补冷焊机，是利用高频电火花放电原理，对模具进行无热堆焊，以保证模具的完好性，也可以利用强化功能对模具进行强化处理，来实现模具的耐磨性、耐热性、耐蚀性等等设备工作原理当电极棒（焊条）在工作表面旋转，当某些部位间隙很小时，使主机放电回路形成通路。在他们相互接触的微小区域瞬时流过电流，电流密度可达到</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">105~106/cm2</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''''''Times New Roman''''''''; mso-hansi-font-family: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-bidi-font-family: ''''''''Times New Roman''''''''; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">，而放电时间仅</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">10-6~10-5</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''''''Times New Roman''''''''; mso-hansi-font-family: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-bidi-font-family: ''''''''Times New Roman''''''''; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">秒，由于放电能量在时间上和空间上高度集中，在放电微小的区域内产生了约</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">8000~10000</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''''''Times New Roman''''''''; mso-hansi-font-family: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-bidi-font-family: ''''''''Times New Roman''''''''; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">℃的高温，使该区域的局部材料高能离子化，电极棒（焊条）在等离子冶金状态下高速转移到工件表面，并扩散进入到工件表层，形成冶金型牢固结合的沉积层。主机电源放电周期为</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">10-3~10-1</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''''''Times New Roman''''''''; mso-hansi-font-family: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-bidi-font-family: ''''''''Times New Roman''''''''; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">秒，高频率的放电和电极棒（焊条）在工件表面的高速旋转扫描，可实现大面积高效率的沉积涂层。为什么能实现“冷焊”（热输入低）这是因为放电时间（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">Pt</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''''''Times New Roman''''''''; mso-hansi-font-family: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-bidi-font-family: ''''''''Times New Roman''''''''; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">）比放电间隔时间（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">It</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''''''Times New Roman''''''''; mso-hansi-font-family: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-bidi-font-family: ''''''''Times New Roman''''''''; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">）短，放电间隔期间热量迅速扩散到工件的其他部分，因此热量不会集中在工件的处理部分，实现真正意义的冷焊。为什么结合强度高？电极棒（焊条）瞬间被电弧离子化并转移到与其接触的工件上面，同时出与等离子电弧的高温（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">8000-10000</SPAN><SPAN style="FONT-SIZE: 10.5pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''''''Times New Roman''''''''; mso-hansi-font-family: ''''''''Times New Roman''''''''; mso-font-kerning: 1.0pt; mso-bidi-font-family: ''''''''Times New Roman''''''''; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">℃）在工件表层下形成如盘跟错节般的坚固扩散层，因此结合强度高不会脱落。</SPAN>