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255results about "Welding coupling means" patented technology

Circulating water cooling liner device for welding and application method of liner device

The invention discloses a circulating water cooling liner device for welding. The liner device comprises a liner device body an a circulating water cooling device. The grooves of two to-be-welded plates are oppositely fixed on the upper side of the liner device body. The circulating water cooling device is connected with the liner device. A recessed longitudinal arc-shaped forming groove is formed in each of the four sides of a copper liner which is longitudinally positioned through a retaining plate. A water pump water outlet pipe is connected with a cooling water circulating hole of the copper pad and is connected with a water return pipe of a water storage tank through a water return hose. The invention further discloses an application method of the circulating water cooling liner device. The method includes: fixing a liner seat; selecting the width W1 of each longitudinal arc-shaped forming groove of the copper liner; tightly pressing the copper liner through the retaining plate; connecting water pipes at two ends of the copper liner; fixing the two to-be-welded plates; starting a water pump to feed water so as to cool the copper liner, and welding the two to-be-welded plates. By the longitudinal arc-shaped forming grooves in the copper liner, utilization rate of the copper liner is increased by three times, welding of plates of different thicknesses can be satisfied, and application cost is lowered.
Owner:中外合资沃得重工(中国)有限公司

Welding structure for inner container longitudinal seam of stainless steel gas cylinder and welding method

The invention discloses a welding structure for an inner container longitudinal seam of a stainless steel gas cylinder and a welding method. The welding structure comprises a strip-shaped auxiliary board, wherein a main gas guide hole and a gas guide groove are formed in the strip-shaped auxiliary boar in the length direction; the main gas guide hole and the gas guide groove are arranged in parallel; a plurality of gas guide small holes are formed between the main gas guide hole and the gas guide groove; the two ends of the gas guide small holes are respectively communicated with the main gas guide hole and the gas guide groove; and the cross section of the gas guide groove and the cross section of the longitudinal seam to be welded are positioned in the same plane. The welding method comprises the following steps: rolling round; carrying out butt welding and spot welding; carrying out spot welding on run-on plates and run-off plates; clamping; and welding. According to the invention, an MIG automatic welding process is adopted, so that the primary input-cost of welding equipment is low; in a later using process, the input using and maintenance costs are relatively low and the working efficiency is improved greatly. By adopting the process in the invention, the qualification rate of nondestructive testing reaches 99.4% or above in an actual longitudinal seam welding process of an insulated gas cylinder and a cylinder for an LNG vehicle; and physical and chemical test projects completely meet standard requirements.
Owner:ANHUI DAPAN SPECIAL EQUIP VEHICLE CO LTD
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