杭州雄盛机械有限公司

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  • 钢筋对焊机的应用场景
  • 本站编辑:杭州雄盛机械有限公司发布日期:2019-08-17 14:56 浏览次数:
钢筋对焊机是广泛用于钢筋纵向连接及预应力钢筋与螺丝端杆的焊接。钢筋对焊机的原理是利用对焊机使两端钢筋接触,通过低电压的强电流,待钢筋被加热到一定温度变软后,进行轴向加压顶锻,形成对焊接头。钢筋闪光对焊工艺常用的连续闪光焊、预热闪光焊和闪光-预热-闪光焊。对Ⅳ级钢筋有时在焊接后还进行通电热处理。
钢筋对焊机主要是利用工件对口接触电阻产生热量加热工件,金属表面熔化,温度梯度大,热影响区比较小。
焊缝是在工件对口固相金属产生塑性变性条件下,形成共同晶粒。焊缝组织、成分接近基本金属(或者经过热处理),比较容易获得等强等塑焊接接头。
闪光过程具有排出空气,降低金属氧化的自保护功能。顶锻还能将氧化物随液体金属排出焊缝之外。焊缝夹杂、未焊透等缺陷较少。
闪光过程具有较强的自调节功能,对严格保持规范一致性要求较低,焊接质量稳定。单位焊接截面积需要电功率小,焊接低碳钢只需(0.1-0.3)KVA/mm2电功率。
焊接生产率高,焊接一个接头只需几秒至几十秒。
焊接适用范围广,原则上能锻造的金属材料都可以用闪光对焊焊接。例如低碳钢、高碳钢、合金钢、不锈钢等有色金属及合金都可以用闪光对焊机。
焊接截面积范围大,一般从几十至几万mm2截面积都能焊接。
闪光对焊广泛应用于焊接各种板件、管件、型材、实心件、刀具等,应用十分广泛,是一种经济、高效率的焊接方法。
Steel bar welding machine is widely used for longitudinal connection of steel bar and welding of prestressed steel bar and screw end bar. The principle of steel bar butt welding machine is to use the butt welding machine to make the two ends of the steel bar contact, through the strong current of low voltage, after the steel bar is heated to a certain temperature and become soft, the axial pressure forging, forming butt welding joint. Continuous flash welding, preheat flash welding and flash - preheat - flash welding are commonly used in reinforcement flash butt welding process. Of magnitude Ⅳ reinforced sometimes also for electric heat treatment after welding.
 
The rebar welding machine mainly USES the heat generated by the contact resistance of the workpiece to heat the workpiece, the metal surface melts, the temperature gradient is large, the heat affected area is small.
 
Welds form common grains under the condition of plastic deformation of solid phase metal. Weld structure, composition close to the base metal (or after heat treatment), relatively easy to obtain iso-strong iso-plastic welded joints.
 
The flash process has the self-protection function of discharging air and reducing metal oxidation. The forging also removes the oxide from the weld with the liquid metal. Weld inclusion, lack of penetration and other defects are few.
 
The flash process has a strong self-regulation function, which has a low requirement for strict consistency of specification and stable welding quality. Small electric power is required for welding section area per unit, and only (0.1-0.3) KVA/mm2 electric power is required for welding low carbon steel.
 
High welding productivity, welding a joint only a few seconds to dozens of seconds.
 
Welding is applicable to a wide range, in principle can be forged metal materials can be used flash butt welding welding. For example, low carbon steel, high carbon steel, alloy steel, stainless steel and other non-ferrous metals and alloys can be used flash welder.
 
Welding cross-sectional area range is large, generally from dozens to tens of thousands of mm2 cross-sectional area can be welding.
 
Flash butt welding is widely used in welding of various plate parts, pipe fittings, profiles, solid parts, cutting tools, etc., is widely used, is an economical and efficient welding method.
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