SHS metallurgy powder used for repairing 15CrMoQ pipe die and using method thereof

Abstract

The invention relates to SHS metallurgy powder used for repairing a 15CrMoQ pipe die and a using method thereof. The powder comprises, by weight, 137.146 parts of Fe2O3, 46.339 parts of Al, 5.7508 parts of CaO, 0.9327 part of FeSi90Al1.5, and 3.725 parts of multi-alloy element additive. The multi-alloy element additive comprises Mn, Cr, Mo and Ni. The multi-alloy element additive is directly-addedcorresponding metal elementary substance and is obtained in the manner of being subjected to the replacement reaction with corresponding metal oxide. The directly-added corresponding metal elementarysubstance comprises, by weight, 0.55 part of Mn, 2.425 parts of Cr, 0.45 part of Mo and 0.3 part of Ni. The using method comprises the steps of weighing, mixing, covering and lighting. According to the SHS metallurgy powder, the SHS metallurgy manner is adopted and used for repairing the pipe die, the more excellent repairing layer with ingredients similar to those of the pipe die can be obtained, the repairing quality is improved, the repairing cost of the enterprise pipe die is reduced, and by means of the reasonable matching of the SHS metallurgy reaction powder, the absorbing rate of eachmetal element is effectively improved.

Description

technical field [0001] The invention relates to the technical field of pipe mold repair, in particular to a SHS metallurgical powder used for 15CrMoQ pipe mold repair and its application method. Background technique [0002] As we all know, the pipe mold used for centrifugal casting of ductile iron pipes (hereinafter referred to as the pipe mold) is a large precision mold necessary for the production of ductile iron pipes on the centrifugal pipe casting machine, and it is also a consumable key process equipment necessary for the centrifugal casting pipe industry. The heat-resistant alloy can only be produced through a series of production processes such as vacuum melting, billet casting, forging, heat treatment, machining, and flaw detection. The finished product is expensive and occupies a large proportion of the manufacturing cost of cast iron pipes. During the use of the pipe mold, due to the thermal shock of the high-temperature molten metal and the effect of the low-cyc...

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Problems solved by technology

The nickel-based alloy powder is a laser cladding alloy powder dedicated to semiconductor lasers with a wavelength of 800nm ​​to 1000nm, which has good thermal fatigue resistance; effectively improves the thermal fatigue resistance of the laser cladding functional layer, but it can only be used in conductor lasers use, and the cost of laser cladding is high and the operation is cumbersome. At the same time, the alloy powder cannot adapt to the repair of the pipe mold whose composition is 15CrMoQ

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