Shanghai cold welding cast iron cold welding cast iron without temperature welding machine how much money

Foundry is a machinery manufacturing base technology, for various reasons in the production process there will be a variety of defects, a high rejection rate. In addition, various machinery and equipment in the cast iron easily damaged during use. Due to poor welding cast iron, weld porosity often, easily deformed, easy to break, hard working, easy to produce white and weld cracks, these bring a certain degree of difficulty to the casting of repair. For iron casting defect repair, welding repair process to resolve the white, hot cracks, deformation and processing performance and other issues, so far, theories and methods of international and domestic opinion on this is still not completely solve the problem. Cast iron welding enterprise a big problem. Sanhe company's technical staff in order to solve the above problem, after two years of disdain efforts to cast itself for performance, after thousands of experiments finally developed the SH-07A Precision fill welding cast iron. SH-07A Precision Cast fill welding using advanced electronic technology and digital control technology to improve process performance arc welding waveform and comprehensive solution to the difference between cast iron products weldability issues such as weld often pores, easily deformed, easy to break, easy to produce white and weld cracks. SH-07A Precision fill welding for welding cast iron ductile iron, gray iron castings, malleable iron and white cast iron and other cast iron products, welding. With high efficiency, good quality, low cost, easy to operate, welding high HAZ small workpiece without deformation, weld appearance and so on. SH-07A precision cast fill welding theory and technology to solve the following problems: (1) to solve the chilling question: SH-07A fill welding cast iron using a special welding power source with digital control technology, welding current precise welding time control, improve process performance and arc welding waveform. According to our experimental data confirmed thousands of times, SH-07 type can not only reduce heat input welding area, so that the temperature is always relatively low, while using less than the average current injection to achieve the critical current transition spray transfer, bath volume greatly reduced. Base metal and welding fusion zone hardened layer from metallurgical analysis, the white layer thickness of not more than 0.06mm. International practice, white layer thickness is less than 1mm, no effect on the casting process of cutting tools, which can be ignored. (2) to solve the cast iron "cold welding" process problems weld cracking: welding cast iron is localized rapid heating, the temperature non-uniformity is inevitable, when the thermal stress is greater than the tensile strength will inevitably cast iron weldments thermal cracking. SH-07A due to the transient current density, welding pulse current time is very short (generally less than 0.05s), the use of conventional cast iron cold welding market (such as Z308 Z408, etc.). Can significantly reduce the heat-affected zone, while improving weld and decrease stress, to most effectively prevent the occurrence of cracks, hardness decreased while the fusion zone. Do not destroy the original machining precision welding region color is consistent with the base material, for various complex welding of thin-walled parts. (3) to solve the fusion problem: SH-07A precision iron supplement welder welding process due to the use of pulsed spray transfer which prompted graphite combustion, combustion of CO can cause fusion of the pool boiling so greatly changed. Weld fully integrated with the matrix organization, with close. SH-07A Precision fill welding cast iron is cast iron metallurgical bonding defect repair equipment, the use of pulsed arc (heat input is very low) do not produce undercut edge collapse phenomenon, little stress, small heat-affected zone. Our first domestic SH-07 cast iron fill welding solve the fundamental problem of cast iron welding, so welding process is not complicated, general welder welding work can calmly implementation, resulting in improved production efficiency and save a lot of energy promotion the competitiveness of enterprises. Currently, the company is applying for national patent. When the SH-07A precision cast fill welding machined surface of cast iron and non-processed surface defect repair, no preheating before welding, after welding without heat treatment, directly after welding or grinding machinery for cutting, including the energy in the weld area Drill holes and tapping, and ensure their precision, but also relatively easy to make the pad and base metal color consistency. Fix iron castings machined surface defects are to be welded out of the groove, so that the groove surface gloss, easy to make the welding arc anywhere groove surface burn, welding principles governing the choice is fused in ensuring the premise, The SH-07A using the fill welding cast iron and cast iron electrode ≤φ2.5 room temperature soldering iron welding work as "cold welding" technology welding essentials. SH-07A Precision fill welding cast iron welding technology welding technology is simpler than the ordinary, welders easier to grasp. No preheating before welding, under the premise of no heat treatment after welding, after welding can be performed directly on the mechanical machining, higher productivity, more cost and energy saving materials. Using the SH-07 cast iron fill welding method used. The welder uses ≤φ2.5 - 3.2 welding. 2. The welding current is 10A-200A. 2. When used in part to be welded cast out of the groove, the groove surface gloss, easy to burn anywhere welding arc groove. 3. When welding, weld pool formed in ensuring the premise of the following welding pulse time in 0.05s. 4. Linked closely to ensure no broken tracks, we should ensure that each pad must take the community. 5. Long-term work in the oil environment is welders, should go to the oil after cold welding. 6. If the moisture before welding rod should first deal with re-use. SH-07A precision welder is a welder cast up on the basis of manual arc welding on research and development, so it also has the function of manual arc welding. Address: Jiading District of Shanghai Bao Qian Road 5000, Lane 243-1 Tel: 021-69577542 Mobile: 15000308582 15214492993 Contact: Zhao Yanchun Website: www.sh0769.com E-mail: 465914216@qq.com