Jet smelting NiCrWRe alloy powder for dual-phase flow work piece and its preparation process

Abstract

The spouting melting NiCrWRe alloy powders used in two phase current workpieces and its preparation method, whose purpose is to improve wear and corrosion resistance and using longevity of liquid state and solid state current wearable and corrosion-resistant workpieces at high temperature. The components counted by weight percent is as follows: Ni 50-79%, Cr13-25%, W1-6%, Re 0.1-2.5%, Si 2.0-6.0%, B 2.0-6.0%, C 0.2-2.0%, Fe is less than or equal to 1%. Mixing the raw materials according to the above alloy components, after preheating the mixing raw materials appending the raw materials into electric furnace to melt, when temperature rises to 1450-1550 deg.C adding deoxidized, exhaust air, clear residues, then adding rare earth alloy, after stirring keeping quiescence for 3-5 min, and then clearing residues, analyzing in front of the furnace, adjusting components, taking out of furnace if conformity, injecting the eligible alloy liquid into milling device, atomizing the alloy under the preservation of inertia gas or vacuum state, finally preparing the alloy into powders of 100-350 orders.

Description

technical field [0001] The invention relates to an alloy powder and a manufacturing method thereof, in particular to a nickel-based alloy powder used for two-phase flow workpiece spray melting and a manufacturing method thereof. Background technique [0002] At present, the anti-abrasion workpieces such as pump bodies and pump covers of oil slurry pumps, slurry pumps, sewage pumps, and gravel pumps are cast with alloy steel materials such as ZGCr5Mo or ZG1Cr13, 3Cr13, and the hardness is about HRC28. Since the anti-abrasion workpieces such as the pump body and pump cover work at a temperature of about 420°C and in a two-phase flow state with solid particles and liquid media, the materials need to have high temperature resistance, oxidation resistance and acid and alkali resistance. Good anti-wear ability, while traditional materials make the workpiece unable to achieve the purpose of lasting life, which directly affects the normal operation of the pump. Contents of the inv...

AI Technical Summary

Problems solved by technology

Since the anti-abrasion workpieces such as the pump body and pump cover work at a temperature of about 420°C and in a two-phase flow state with solid particles and liquid media, the materials need to have high temperature resistance, oxidation resistance and acid and alkali resistance. Good anti-wear ability, while traditional materials make the workpiece unable to achieve the purpose of lasting life, which directly affects the normal operation of the pump