5results about How to "Solve welding deformation" patented technology

The invention belongs to the technical field of metal part machining equipment, and particularly relates to a metal part welding device which comprises a straight seam welding machine body, a linear driving assembly and a connecting plate, and a fixing assembly is arranged at the left end of the straight seam welding machine body; the welding mechanism comprises a mounting seat mounted on the connecting plate, and a welding head is mounted on the mounting seat; the auxiliary mechanism comprises an air injection part rotationally arranged on the outer ring of the welding head, and a driving part and a cooling part are further fixedly installed on the welding head; and the preheating mechanism comprises a gas conveying part arranged on the side face of the straight seam welding machine body, plugging parts are arranged on the top face of the straight seam welding machine body in an array distribution mode, and a control part is arranged on the mounting base. By integrating inert gas protection, efficient cooling and intelligent preheating functions, the welding quality and production safety are remarkably improved, and meanwhile the high-precision and efficient automatic welding process is achieved.

The invention relates to a manufacturing method of a transition section structure, in particular to a manufacturing method of a heavy duty gas turbine transition section structure. The problems that an existing transition section structure is affected by the welding temperature in the welding process to deform, and the product size and follow-up assembly are affected are solved. The tool comprises a transition section assembly body, a first tool, a second tool and a third tool. The transition section assembly comprises a transition section assembly and a transition section outer lining, and the transition section assembly is coaxially sleeved with the transition section outer lining. According to the manufacturing method, a more reasonable tool and a more reasonable assembling and welding sequence are designed according to the characteristics of the transition section structure, the problem of welding deformation is solved, convenience is provided for assembling and welding of the transition section assembly and the transition section outer lining, the overall manufacturing precision of the transition section structure is further guaranteed, and the use performance of the transition section structure is guaranteed. The invention belongs to the technical field of transition section structure manufacturing.

The utility model discloses a heat exchanger for heat pump circulation. The heat exchanger comprises a base tube and a plurality of fin sets detachably arranged on the base tube. The fin group comprises a first fin and a second fin; a plurality of buckling parts are arranged between the first fins and the second fins, the first fins and the second fins are assembled and disassembled from the base tube through the buckling parts, lossless assembling and disassembling, interval adjustment and local replacement of the fins are achieved through the design of the modularized fin set, the manufacturing efficiency is improved, and the maintenance cost is reduced.

The utility model discloses a detachable safety net hook which is used for being installed on a steel beam and comprises a connecting plate and a net hanging piece fixedly arranged on the connecting plate. First through holes are formed in the connecting plates and the steel beams, and the connecting plates and the steel beams are detachably connected through first bolts and first nuts; the net hanging piece is of a U-shaped structure and comprises a first side wall and a second side wall which are oppositely arranged. The first side wall is fixedly connected with the connecting plate; the second side wall is detachably connected with an anti-disengaging piece, and the anti-disengaging piece is used for sealing an opening in the upper end of the net hanging piece. The detachable safety net hook provided by the utility model is detachably connected with the steel beam, so that the detachable safety net hook is easy to mount and dismount, and the problem of material waste is avoided; meanwhile, safety net unhooking can be avoided, and construction safety is guaranteed.

This invention provides a method for constructing a pile-type crane base, comprising the following steps: constructing a flat outer shell plate and marking a first installation reference line on the flat outer shell plate; prefabricating multiple independent arc-shaped plates according to the layout of the entire arc-shaped outer shell plate, wherein the arc-shaped plates have processing allowances during material cutting; prefabricating a top ring component and marking a second installation reference line on the top ring component; constructing a main frame and setting a central column at the center of the main frame; hoisting multiple flat outer shells and the top ring component onto the main frame respectively, adjusting their positions, and welding them after meeting the accuracy requirements; hoisting and positioning multiple vertical reinforcing ribs according to the first and second installation reference lines; hoisting the arc-shaped plates in sequence, cutting processing allowances, adjusting accuracy, and then welding multiple arc-shaped plates in a preset sequence to form an arc-shaped outer shell plate; welding the arc-shaped outer shell plate, horizontal structure, and vertical reinforcing ribs; and welding the arc-shaped outer shell plate and the flat outer shell plate.