New Method for Improving the Productivity of Gas Metal Arc Welding and Flux Cored Arc Welding

提高熔化极气体保护焊和药芯焊丝电弧焊生产率的新方法

• 批准号: 8660427
• 负责人: Michael Tomsic
• 金额: $ 3.57万
• 依托单位: Plastronic, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-04-01 至 1987-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8660427&HistoricalAwards=false
• 关键词: New; Method; Improving; Productivity; Gas

This proposal will investigate an innovative approach to make the arc amperage less dependent on wire feed speed plus a unique dual shield torch design which has application to gas metal arc welding and flux cored arc welding. The innovative approach is to use two power sources on one weld wire, one for preheating the wire and the other for providing the welding arc. The significance of this approach is that the weld deposition rate will be less dependent on the arc current as a result of the wire preheating by the second power source. The second part of the innovative approach is to use dual flow gas shielding of the arc area, instead of the conventional one shielding gas. This permits different gas types to be directed to the appropriate region to be most effective. The research plan is to construct the experimental equipment and investigate how much the heat input, deposition rate and travel speed can be varied while still maintaining good weld characteristics. Carbon steel solid and tubular wire will be studied. This Phase I will confirm the feasibility of this approach and determine the operational envelop of the process parameters for carbon steel welding. A follow-on Phase II is planned to investigate the effect of this process on the material properties and expand the studies to other material types, such as low alloy steel, stainless steel and aluminum. If successful, plans are to pursue funds to commercialize this approach. This innovative research, if successful, has the potential to increase productivity of carbon steel welding and improve welded properties of heat affected metals, such as low alloy steel and stainless steel.

该提案将研究一种创新的方法，使电弧安培对送丝速度的依赖程度较低，以及一种独特的双屏蔽焊枪设计，该设计可应用于气体保护焊和药芯弧焊。创新的方法是在一根焊丝上使用两个电源，一个用于预热焊丝，另一个用于提供焊接电弧。这种方法的意义在于，由于第二电源对焊丝进行预热，焊接熔敷速度对电弧电流的依赖程度较小。创新方法的第二部分是用双流气体保护弧区，代替传统的单流气体保护。这允许不同类型的气体被引导到适当的区域以达到最有效。研究计划是建造实验设备，并研究在保持良好焊接特性的情况下，热输入、熔敷速度和移动速度可以有多大的变化。将研究碳钢实心线材和管线材。本阶段一将确认该方法的可行性，并确定碳钢焊接工艺参数的操作范围。下一阶段计划调查该工艺对材料性能的影响，并将研究扩展到其他材料类型，如低合金钢、不锈钢和铝。如果成功，计划寻求资金将这种方法商业化。如果这项创新研究成功，将有可能提高碳钢焊接的生产率，并改善热影响金属的焊接性能，如低合金钢和不锈钢。