装甲兵工程学院学报
裝甲兵工程學院學報
장갑병공정학원학보
JOURNAL OF ARMORED FORCE ENGINEERING INSTITUTE
2011年
5期
88-90
,共3页
刘宏伟%刘吉延%马世宁%王韶勇%吴勇
劉宏偉%劉吉延%馬世寧%王韶勇%吳勇
류굉위%류길연%마세저%왕소용%오용
无电焊接%热循环曲线%母材厚度
無電銲接%熱循環麯線%母材厚度
무전한접%열순배곡선%모재후도
non-electric welding%heat cycle curves%thickness of weldment
利用热电偶测试了无电焊接过程中同一厚度钢板不同位置、不同厚度钢板同一位置处的焊接热循环曲线,探讨了无电焊接热循环规律及焊接母材厚度对无电焊接热循环的影响。研究表明:无电焊接时,焊件上不同位置点的热循环曲线与电弧焊基本相似。但相较而言,无电焊接在加热阶段的升温速度与冷却阶段的降温速度均显著小于电弧焊。无电焊接过程中,焊件上离焊缝中心线越近,其升温速度越大,峰值温度越高,冷却速度也越大,这一变化规律与电弧焊时完全一致。无电焊接时,焊接热量沿横向的传热速度远大于其沿纵向的传热速度,这使得焊件厚度对无电焊接的影响较为显著,也是焊件厚度增加将导致焊接难度显著增大的根本原因。
利用熱電偶測試瞭無電銲接過程中同一厚度鋼闆不同位置、不同厚度鋼闆同一位置處的銲接熱循環麯線,探討瞭無電銲接熱循環規律及銲接母材厚度對無電銲接熱循環的影響。研究錶明:無電銲接時,銲件上不同位置點的熱循環麯線與電弧銲基本相似。但相較而言,無電銲接在加熱階段的升溫速度與冷卻階段的降溫速度均顯著小于電弧銲。無電銲接過程中,銲件上離銲縫中心線越近,其升溫速度越大,峰值溫度越高,冷卻速度也越大,這一變化規律與電弧銲時完全一緻。無電銲接時,銲接熱量沿橫嚮的傳熱速度遠大于其沿縱嚮的傳熱速度,這使得銲件厚度對無電銲接的影響較為顯著,也是銲件厚度增加將導緻銲接難度顯著增大的根本原因。
이용열전우측시료무전한접과정중동일후도강판불동위치、불동후도강판동일위치처적한접열순배곡선,탐토료무전한접열순배규률급한접모재후도대무전한접열순배적영향。연구표명:무전한접시,한건상불동위치점적열순배곡선여전호한기본상사。단상교이언,무전한접재가열계단적승온속도여냉각계단적강온속도균현저소우전호한。무전한접과정중,한건상리한봉중심선월근,기승온속도월대,봉치온도월고,냉각속도야월대,저일변화규률여전호한시완전일치。무전한접시,한접열량연횡향적전열속도원대우기연종향적전열속도,저사득한건후도대무전한접적영향교위현저,야시한건후도증가장도치한접난도현저증대적근본원인。
The thermocouple is used to test the heat cycle curves of the different points on the weldments with the same thickness, as well as the heat cycle curves of the same point on the weldments with the different thickness during the non-electric welding process. The heat cycle rule as well as the influence of the weldments thickness on heat cycle of non-electric welding are studied and discussed. The results show that the non-electric welding heat cycle curves of the tested points are similar to that of the arc welding. Whereas, the heating rate and cooling rate of the non-electric welding are both much smaller than that of the arc welding. During the non-electric welding process, the closer the tested point to the central weld line is, the bigger the heating rate, the higher the peak value of temperature, and the bigger the cooling rate too. This changing law is identical with that of the arc weld. The horizontal heat transfer velocity is much bigger than the vertical one,which makes the thickness of the weldments has the great influence on the non-electric welding. That's why the increase of thickness of the weldments will make them much more difficult to be welt.