Automatic Welding Method of Hydraulic Support Structural Parts Using 1.6mm Diameter Welding Wire

Abstract

The invention discloses a method for automatic welding of hydraulic support structural parts by using a welding wire with a diameter of 1.6mm. 1. Check the part tolerance and assembly accuracy of the hydraulic support structural parts before welding, and control the depth tolerance and welding groove angle tolerance of the welding groove ; 2. Before welding, grind both sides of the weld bead to a metallic luster; 3. All welds to be welded on the hydraulic support structure are in the flat welding or flat fillet welding position; 4. Offline programming or on-site programming teaching for the welding robot; 5. The welding robot uses a welding wire with a diameter of 1.6mm to perform multi-layer and multi-pass welding on the weld to be welded by means of gas shielded welding. The invention adopts a welding wire with a diameter of 1.6mm for robot welding. Compared with traditional welding with a welding wire of 1.2mm in diameter, the penetration depth of the welding seam is increased and the efficiency is improved under the condition that the cost per ton of welding wire remains unchanged and the mechanical properties of the welding seam meet the requirements. More than 40%, the comprehensive cost of welding wire per ton can save more than 1,500 yuan.

Description

technical field [0001] The invention relates to a method for automatic welding of hydraulic support structural parts by a welding robot, in particular to a method for automatically welding hydraulic support structural parts using a welding wire with a diameter of 1.6 mm. Background technique [0002] As the main support equipment in coal mine fully mechanized mining equipment, hydraulic support has the characteristics of large volume and weight, harsh service conditions, and many box-type welded structures. The structural parts of the hydraulic support mainly include: top beam, cover beam, base, front and rear connecting rods and other parts. These structural parts are generally box-shaped structures with a large amount of welding. Previously, the structural parts of the hydraulic support were mainly welded in the form of gas shielded welding, relying on manual multi-layer and multi-pass welding with a diameter of 1.2mm welding wire, and the welding efficiency was low. Wit...

AI Technical Summary

Problems solved by technology

However, up to now, the welding robots used for welding hydraulic support structural parts all use solid welding wire with a diameter of 1.2mm. Although the efficiency has been greatly improved compared with manual welding, the cladding efficiency is still low due to the thinner diameter of the welding wire. , especially for production line operations, using solid welding wire with a diameter of 1.2mm for welding, and its low welding efficiency has become a bottleneck process that restricts production beats

People try to weld the above-mentioned structural parts with a welding robot using a solid welding wire with a diameter of 1.6mm, but because the solid welding wire with a diameter of 1.6mm requires high current and voltage, the heat input during welding is large, resulting in the quality and mechanical properties of the weld. In addition, the box structure of the hydraulic support structural parts makes the welding seam dense and causes a large welding stress. Therefore, welding the above structural parts using a welding robot with a diameter of 1.6mm solid welding wire has not been applied.

Images