木塑窗角的熔焊-电磁感应复合连接技术

Welding-electromagnetic Induction Heating Composite Connection for Wood-plastic Composites Window Corners

选取挤出型工艺生产的木塑异型材作为研究试件,采用熔焊-电磁感应加热复合连接木塑窗角的方法,先用熔焊进行木塑窗角的初步连接;再用电磁感应加热热熔窗角,熔化腔内的填充物,待冷却后形成加强筋塑件角码,完成二次加强连接。用单因素分析法,探索复合连接技术适宜工艺参数。结果表明:在焊接温度260℃、焊接时间60 s、加热时间50 s、左右进给压力0.2 MPa、前后压钳压力0.4 MPa,完成初步焊接;在电磁感应加热时间55 s、输出振荡频率50 k Hz时,效果最好,试件受压弯曲的最大力为3 952 N、受压弯曲应力为26.97 MPa。熔焊-电磁感应加热复合连接木塑窗角,实现了连接速度快、热效率高、木塑表面无破坏、具有一定连接强度等优点。

With the extruded wood-plastic composites（ WPC） window frame,we used the combining connection technology to make the window corner joints. First,we connected the WPC window corners by welding,then heated the inside steel support to make inner container melted,which formed the strengthen corner connecting part with cooling. By single factor method,we measured the optimized parameters in the combing connecting technology. The premier connection can be completed under 260 ℃ of welding temperature,60 s of welding time,50 s of heating time,0. 2 MPa of feeding pressure from left and right side,0. 4 MPa pressure in front and back grab. The welding effect was perfect under 55 s of electromagnetic heating and 50 k Hz of output frequency electricity. The destroy force was 3 952 N and the max bending stress was 26. 97 MPa. The welding-electromagnetic heating technology to WPC window corner has the advantages of fast connection,no surface destroy,high heating efficiency and high strength.