CN104070166A - Production method for sintering molybdenum blank in low temperature activated mode - Google Patents

Abstract

The invention discloses a production method for sintering molybdenum blank in a low temperature activated mode. The production method can improve product quality, save energy and lower the fixed assets of production equipment. According to the technical scheme, the production method for sintering molybdenum blank in the low temperature activated mode is characterized by comprising the following steps that (1) forming is conducted, superfine molybdenum powder is filled into a molybdenum plate blank mold, the powder filling amount is 970 grams, filled powder includes a forming agent, and extrusion forming is conducted on an oil press of 250 tons or more than 250 tons; (2) presintering is carried out, formed molybdenum blank is placed into a first molybdenum wire furnace for presintering, and the presintering temperature is 1050 DEG C; (3) sintering is performed, pre-sintered molybdenum blank is placed into a second molybdenum wire furnace for sintering, and the sintering temperature is 1350 DEG C.

Description

The production method of cryogenic activating sintering molybdenum base

Technical field

The invention belongs to the field of production of sintering molybdenum base, especially a kind of production method of improving the quality of products, saving the energy and reducing the cryogenic activating sintering molybdenum base of production equipment fixed assets.

Background technology

At present, the production method of conventional sintering molybdenum base is high temperature sintering molybdenum base, and the problem of existence is that product quality is low, consumption energy consumption of fixed capital funds many and production equipment are large.

Summary of the invention

The object of this invention is to provide a kind of production method of improving the quality of products, saving the energy and reducing the cryogenic activating sintering molybdenum base of production equipment fixed assets.

The technical solution adopted in the present invention is: the production method of cryogenic activating sintering molybdenum base, is characterized in that comprising the following steps:

(1) moulding: ultrafine molybdenum powder is packed in molybdenum plate mold, and filling amount is 970 grams, and filling amount comprises forming agent, extrusion forming on 250 tons or above hydraulic press;

(2) pre-burning: the moulding molybdenum base of producing in step (1) is put into the first molybdenum wire furnace and carry out pre-burning, calcined temperature is 1050 ℃, 7.02 kilowatts of constant temperature power, push away boat speed and be 1 boat/hour, the pre-burning time is 1-2 hour;

(3) sintering: the molybdenum base after pre-burning in step (2) is put into the second molybdenum wire furnace and carry out sintering, sintering temperature is 1350 ℃, and 14 kilowatts of constant temperature power, push away boat speed: 1 boat/2.5 hour, sintering time is 3-4 hour, come out of the stove after the assay was approved finished product.

Effect of the present invention is: molybdenum plate base is the essential semi-finished product raw material of rolling all size molybdenum plate, through experiment and test result, prove: cryogenic activating sintering molybdenum base can replace common high temperature sintering molybdenum base completely, not only can greatly improve the quality of product, and can save in a large number the energy, reduce in a large number the fixed assets of molybdenum base production equipment.

The sintering electricity unit consumption of cryogenic activating sintering method reduces more than 1 times than prior art, and equipment investment becomes several times to reduce, and because temperature is low, maintenance cost also reduces greatly.

Below in conjunction with not limiting embodiment, the present invention is described further.

The specific embodiment

The production method of cryogenic activating sintering molybdenum base, comprises the following steps:

(1) moulding: ultrafine molybdenum powder is packed in molybdenum plate mold, and filling amount is 970 grams, and filling amount comprises forming agent, extrusion forming on 250 tons or above hydraulic press;

(2) pre-burning: the moulding molybdenum base of producing in step (1) is put into the first molybdenum wire furnace and carry out pre-burning, calcined temperature is 1050 ℃, 7.02 kilowatts of constant temperature power, push away boat speed and be 1 boat/hour, the pre-burning time is 1-2 hour;

(3) sintering: the molybdenum base after pre-burning in step (2) is put into the second molybdenum wire furnace and carry out sintering, sintering temperature is 1350 ℃, and 14 kilowatts of constant temperature power, push away boat speed: 1 boat/2.5 hour, sintering time is 3-4 hour, come out of the stove after the assay was approved finished product.

Claims (1)

1. the production method of cryogenic activating sintering molybdenum base, is characterized in that comprising the following steps:

(1) moulding: ultrafine molybdenum powder is packed in molybdenum plate mold, and filling amount is 970 grams, and filling amount comprises forming agent, extrusion forming on 250 tons or above hydraulic press;

(2) pre-burning: the moulding molybdenum base of producing in step (1) is put into the first molybdenum wire furnace and carry out pre-burning, calcined temperature is 1050 ℃, 7.02 kilowatts of constant temperature power, push away boat speed and be 1 boat/hour, the pre-burning time is 1-2 hour;

(3) sintering: the molybdenum base after pre-burning in step (2) is put into the second molybdenum wire furnace and carry out sintering, sintering temperature is 1350 ℃, and 14 kilowatts of constant temperature power, push away boat speed: 1 boat/2.5 hour, sintering time is 3-4 hour, come out of the stove after the assay was approved finished product.