共查询到18条相似文献,搜索用时 72 毫秒
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本文采用德国CLOOS公司的TANDEM双丝焊设备并配以珠海金宝热融焊接技术有限公司开发的双立柱龙门式焊接操作系统,对刮板机中部槽中底板进行两套TANDEM焊接系统一双丝双枪同时焊接,焊接质量优良,焊缝成形美观,焊接效率大幅提高,一个小时生产一个中部槽,纯焊接时间30mi。左右。与普通手工CO2焊相比,不但能得到美观高质量的焊缝,而且焊接综合效率提高6倍左右,是中部槽焊接的首选工艺。 相似文献
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TANDEM双丝焊系统的特点及应用 总被引:7,自引:1,他引:7
TANDEM双丝焊技术具有熔敷速度快、焊接质量好的特点,分析了双丝焊三种脉冲波形对焊接成形的影响,阐述了双丝焊技术在自动焊接领域的灵活配置,应用前景广阔。 相似文献
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从机器人、双丝焊机、高精度变位机和自动化程控系统与焊接夹具等几方面对中部槽的机器人焊接系统设计方式进行了较为详细的介绍.探讨了双丝焊在中部槽焊接中的应用,并对中部槽双丝焊接工艺措施和焊接参数的选择进行试验研究.结果表明,采用有效的工艺对中部槽进行机器人自动焊接,具有焊缝内部质量优良、焊接速度快、自动化程度高等优点. 相似文献
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结合实际生产情况,研究了22mm厚16Mn钢板的对接双丝埋弧焊工艺,给出了一套合适的焊接工艺参数。 相似文献
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为了提高现场施工效率,使用双丝埋弧焊工艺,同时采用较小的坡口角度,从熔敷速度的增大与焊接坡口横截面积减小两方面采取措施来促进效率的提高。通过选取45°小坡口角度的试板进行双丝埋弧焊焊接,并采取对应的控制措施,确保了最终的无损检测与各项性能试验指标均满足要求,其中抗拉强度超出了合格值490 MPa的要求;弯曲试验无缺陷;各位置的低温缺口冲击吸收功试验值均>34 J,部分位置在100 J以上,远大于合格值要求;最大的硬度值为HV10242,远小于HV10325的要求。该双丝埋弧焊的坡口角度由传统的60°降低为45°小坡口角度的工艺研发成功,将减少焊接工作量,进一步提高施工效率,为降本增效、节能减碳做出贡献。 相似文献
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随着工程机械水平的发展,对于外观件质量的要求越来越高。我厂生产的工程机械产品外观件多为薄壁件,如驾驶室、柴油箱、护罩等,采用CO2气体保护焊焊接,焊缝表面质量差,波纹粗糙,且飞溅较大,影响了主机外观质量。MAG焊接,即富氩混合气体保护焊,焊缝表面质量好,波纹细密,但大都用在焊接中厚板上。因此,进行了MAG焊焊接薄板件的试验,探索比较完善的焊接工艺,使焊缝表面质量及其它焊接性能完好,从而提高主机外观质量。1试验材料1.1试验件材料:采用常用材料Q235C,材料规格400mm×250mm×3mm8件。1.2焊接… 相似文献
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针对海上钻井平台桩腿用厚板低合金高强钢Q690E,采用高效机器人双丝MAG焊接系统,研究了不同CO2含量的保护气体对焊缝区力学性能及微观组织的影响。结果表明:保护气体为96%Ar+4%CO2时,焊缝金属组织以贝氏体和马氏体为主,当保护气体中CO2含量为10%和20%时,焊缝区显微组织中针状铁素体含量增多;当CO2含量为10%时,焊缝区抗拉强度最大,当CO2含量为20%时抗拉强度最小;随着保护气体中CO2含量的增加,焊缝区-40℃低温冲击韧性逐渐增大,当CO2含量从4%增大到10%时,低温韧性增大的幅度较大,随着CO2含量进一步增大,低温韧性增大幅度趋于平缓。 相似文献
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Nanoindentation method was adopted to investigate the distribution regularities of micro-mechanical properties of 2219 twin wire welded joints, thus providing the necessary theoretical basis and guidance for joint strengthening and improvement of welding procedure. Experimental results show that in weld zone, micro-mechanical properties are seriously uneven. Both hardness and elastic modulus distribute as uneven sandwich layers, while micro-mechanical properties in bond area are much more uniform than weld zone;In heat-affected zone of 2219 twin wire welded joint, distribution regularity of hardness is similar to elastic modulus. The average hardness in quenching zone is higher than softening zone, and the average elastic modulus in solid solution zone is slightly higher than softening zone. As far as the whole welded joint is concerned, metal in weld possesses the lowest hardness. For welded specimens without reinforcement, fracture position is the weld when tensioning. While for welded specimens with reinforcement, bond area is the poorest position with joint strength coefficient of 61%. So, it is necessary to strengthen the poor positions--weld and bond area of 2219 twin wire welded joint in order to solve joint weakening of welding this kind of alloy. 相似文献
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双细丝埋弧焊+陶瓷衬垫可用于无间隙装配、坡口内定位焊、背面应用陶瓷衬垫+正面大能量输入的双细丝单面埋弧焊焊接,焊缝正反面一次成形.双细丝埋弧焊是利用单电源单送丝机送出两条具有一定距离的并联细丝,在保持大能量输入同时,把焊接电流进行分流,从而降低电弧能量过多集中于中坡口根部的问题.由于细焊丝干伸长度电阻热增加,焊丝熔化速度加快;电极之间电弧辐射热相互作用,能量利用率高,熔滴过渡更细,焊接过程更平稳,焊缝成形更美观;对于板厚12~18 mm,可大幅度提高焊接效率10倍以上,焊接质量稳定,应用前景良好. 相似文献
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Satoshi Yamane Katsumasa Uji Toru Nakajima Hikaru Yamamoto 《Welding International》2013,27(2):103-109
The formation of stable back beads in a root pass weld during one side multi-layer welding is important to achieve high quality welded metal joints in MAG welding. The authors employed the switch back welding method for V groove joints without backing plates. In this switch back welding method, the torch moves forward and backward with an oscillation frequency of 2.5 Hz. In order to achieve this welding, personal computers control the conventional welding robot, the power source characteristic and the wire feeder unit. During the forward, the torch is weaving on the V groove gap without the weld pool. If the weaving width becomes wider than the proper width, the tip of the wire becomes high and a good back bead cannot be obtained. The weaving width is adjusted so as to get the proper width in the switch back welding. The suitability of the welding conditions for each root gap was verified by observation of the arc, the weld pool and the external appearance of back beads. A good back bead was obtained under V groove welding in 2–4 mm gap. 相似文献
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Microstructures of 2219 twin wire welded joints 总被引:2,自引:0,他引:2
0IntroductionAs a kind of efficient welding method,twin wirewelding has many merits such as big deposition rate,littleheat input and narrow heat-affected zone.What’s more,the defects such as incomplete penetration,discontinuousseam or undercut can be avo… 相似文献