Large cardan shaft flange welding method
A technology of flange welding and cardan shaft, applied in welding equipment, welding/welding/cutting items, arc welding equipment, etc., can solve problems such as poor weldability, improve impact toughness, ease stress state, and reduce procurement The effect of fees
Active Publication Date: 2014-12-24
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0006] The purpose of the present invention is to provide a flange welding method for large cardan shafts, which can overcome the problem of poor weldability of the materials used, and greatly improve the overall strength and impact toughness of large cardan shafts
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[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. First of all, it should be noted that the present invention is not limited to the following specific embodiments. Those skilled in the art should understand the present invention from the spirit embodied in the following embodiments, and each technical term can be optimized based on the spirit of the present invention. broad understanding. The same or similar components in the figures are denoted by the same reference numerals.
[0025] Such as figure 1 As shown, the universal joint shaft 6 of the present invention includes a flange 1 and a connecting pipe 5 , and the flange 1 has an exhaust channel 2 and a centering ring 4 . The universal joint shaft is integrally formed by welding the flange 1 and the connecting pipe 2. The material ...
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Abstract
The invention provides a large cardan shaft flange welding method. The method includes the steps of cutting off an old flange on a large cardan shaft through a machine tool, machining a U-shaped groove in the end face of a connecting pipe, arranging a new flange on the connecting pipe to make the new flange aligned with the connecting pipe, conducting position alignment, welding a positioning connecting plate, placing a whole assembly in a heating furnace to be heated till the heating temperature reaches the required preheat temperature, taking the whole assembly out of the furnace, placing the whole assembly on a welding platform, placing an electric heating plate on the inner ring of the connecting pipe, powering on the electric heating plate to conduct heating so as to make the welding joint position heated to the required interlayer temperature, conducting welding when the temperature of the welding joint position is detected to be the interlayer temperature, conducting impact to eliminate stress after one layer is well welded till welding is completed, detaching the positioning connecting plate, machining the surface of a welding joint through the machine tool on the welded cardan shaft so as to eliminate fractures on the surface of the welding joint, and conducting shooting and examination to obtain the qualified large cardan shaft. By means of the method, the overall strength and the impact toughness of the whole large cardan shaft are greatly improved.
Description
technical field [0001] The invention relates to a welding processing method of a main shaft, in particular to a welding method of a cardan shaft flange. Background technique [0002] A universal joint is a widely used mechanical component, usually called a cardan shaft. The main function of the cardan shaft is to transmit the motion and power of the two transmission shafts that are not on the same straight line. Cross cardan shafts started in my country in the early 1980s and were first used in rolling equipment in the metallurgical industry. However, cross cardan shafts are still rarely used in the main drive of rolling mills. In the past, slider-type cardan shafts were traditionally used. Compared with the slider type cardan shaft, the cross cardan shaft has the characteristics of simple maintenance and large swing angle, and is especially suitable for rolling mills in the metallurgical industry. [0003] At present, the main shaft of the thick plate rolling mill has ado...
Claims
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IPC IPC(8): B23K9/16B23K9/235
CPCB23K9/0282B23K9/16B23K9/235B23K2103/04
Inventor 丁海绍孔利明
Owner BAOSHAN IRON & STEEL CO LTD