CN103203600A - Method for producing molybdenum electrode bar by means of precision forging - Google Patents
Method for producing molybdenum electrode bar by means of precision forging Download PDFInfo
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- CN103203600A CN103203600A CN2013101276724A CN201310127672A CN103203600A CN 103203600 A CN103203600 A CN 103203600A CN 2013101276724 A CN2013101276724 A CN 2013101276724A CN 201310127672 A CN201310127672 A CN 201310127672A CN 103203600 A CN103203600 A CN 103203600A
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- molybdenum
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 165
- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 136
- 239000011733 molybdenum Substances 0.000 title claims abstract description 136
- 238000005242 forging Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000005245 sintering Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims description 16
- 239000001257 hydrogen Substances 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 10
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 8
- 235000011613 Pinus brutia Nutrition 0.000 claims description 8
- 241000018646 Pinus brutia Species 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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Abstract
The invention discloses a method for producing a molybdenum electrode bar by means of precision forging. The method includes the steps of molybdenum powder selection, bar blank pressing, molybdenum bar blank sintering, straightening and forging. The problem that the specifications of the molybdenum bar blanks are unmatched with the forging means in the prior art is solved, and the molybdenum electrode bar produced by the method is uniform in size and quality and free of burrs and surface cracks.
Description
Technical field
The invention belongs to technical field of material, be specifically related to a kind of method that adopts the finish forge legal system to be equipped with molybdenum electrode bar.
Background technology
Molybdenum electrode bar be manufactured with two kinds of methods, first kind is to be raw material with sintering molybdenum bar base, adopt the pneumatic hammer die forging, but pneumatic hammer die forging technology falls behind, inefficiency, and helpless for the molybdenum electrode bar of big specification (length is greater than 2m); Second kind is to be raw material with sintering molybdenum bar base, adopts precise forging machine to forge, and the working ability that it is powerful and high efficiency are fit to the big specification molybdenum electrode bar of mass production.
The granularity of molybdenum powder and Song Bi are the important parameters of determining the molybdenum powder specification, the molybdenum bar base that the molybdenum powder of different grain size and Song Bi is produced, and its physical property is also different, i.e. and the molybdenum bar base specification of the molybdenum powder of different grain size and Song Bi production is different.If the molybdenum bar base employing to different size removes to produce molybdenum electrode bar with a kind of forging mode, just can't guarantee the quality of final molybdenum electrode bar.Be fit to the molybdenum bar base of pneumatic hammer die forging if use the finish forge method then exist finish-forging material carrying out flaw detection defective, forge and have that burr increases in shrinkage cavity, the follow-up wire drawing, the problem of surface checking; And be fit to the molybdenum bar base of finish forge if use pneumatic hammer die forging rule the problem that yield rate reduces can occur.
Summary of the invention
The object of the present invention is to provide a kind of method that adopts the finish forge legal system to be equipped with molybdenum electrode bar, solved specification and the unmatched problem of forging mode of molybdenum bar base in the prior art.
The technical solution adopted in the present invention is: adopt the finish forge legal system to be equipped with the method for molybdenum electrode bar, comprise the steps:
The first step, the choosing of molybdenum powder
Choosing granularity is 4.5～5.0 μ m, and pine is than being 1.25～1.5g/cm
3Molybdenum powder as raw material;
Second step, pressed bar
The molybdenum powder that the first step is chosen is packed in the cylindrical mold, the mould that will install molybdenum powder is again put into cold isostatic press and is suppressed, and the pressure of cold isostatic press is set to 180～200Mpa, pressurize 8～15 minutes again after the compacting, and making diameter is the molybdenum bar base of 68～100mm;
The 3rd step, sintering molybdenum bar base
The second molybdenum bar base that make of step is packed in the intermediate frequency furnace, and in stove, charge into hydrogen, carry out the segmented sintering then, again the molybdenum bar base is cooled off behind the sintering; In sintering and the cooling procedure, the flow of hydrogen is 0.7～1.0m
3/ h;
The 4th step, more straight
It is more straight to put into four-column hydraulic press through the molybdenum bar base that the 3rd step handled, and straight temperature is set to 1300～1350 ℃, and be 60 minutes heat time heating time, makes the flexibility of molybdenum bar base be not more than 5mm;
In the 5th step, forge
To carry out carrying out multi-pass after a fire heats through more straight molybdenum bar base and forge, make molybdenum electrode bar.
Characteristics of the present invention also are,
Segmented sintering in the 3rd step is specially: heating earlier made furnace temperature rise to 1000 ℃ from 20 ℃ in 3～4 hours, was incubated 1.5～2.5 hours then; Heated 1.5 hours to 1250 ℃, and be incubated 2.5 hours; Heated 1.5 hours to 1400 ℃, and be incubated 2.5～4 hours; Heated 2 hours to 1600 ℃, and be incubated 3.5～4 hours; Heated 2 hours to 1800 ℃, and be incubated 2.5～3.5 hours; Heated 2 hours to 1850 ℃, and be incubated 5～7 hours, heated 2 hours to 1900 ℃, be incubated 5～6 hours.
The heating of carrying out multi-pass after the fire heating in the 5th step forges, be specially: under 1500 ℃ temperature, heated 20 minutes, then, on precise forging machine, the molybdenum bar base is carried out forging of multi-pass, the diameter that first passage forges back molybdenum bar base reduces by 12～21mm, and the diameter that second passage forges back molybdenum bar base reduces by 3～16mm, and the diameter that the 3rd passage forges back molybdenum bar base reduces by 1～4mm.
The invention has the beneficial effects as follows: the molybdenum electrode bar that the method for preparing molybdenum electrode bar of the present invention makes, have the barred body structured size, quality is even, no burr, the advantage of no surface checking.
The specific embodiment
The present invention is described in detail below in conjunction with the specific embodiment.
Embodiment 1
The first step, the choosing of molybdenum powder
Choosing granularity is 4.5 μ m, and pine is than being 1.25g/cm
3Molybdenum powder as raw material;
Second step, pressed bar
The molybdenum powder that the first step is chosen is packed in the cylindrical mold, and the mould that will install molybdenum powder is again put into cold isostatic press and suppressed, and the pressure of cold isostatic press is set to 180Mpa, pressurize 8 minutes again after the compacting, and making diameter is the molybdenum bar base of 68mm;
The 3rd step, sintering molybdenum bar base
The second molybdenum bar base that make of step is packed in the intermediate frequency furnace, and charge into hydrogen in stove, carry out the segmented sintering then, heating earlier made furnace temperature rise to 1000 ℃ from 20 ℃ in 3 hours, was incubated 1.5 hours then; Heated 1.5 hours to 1250 ℃, and be incubated 2.5 hours; Heated 1.5 hours to 1400 ℃, and be incubated 2.5 hours; Heated 2 hours to 1600 ℃, and be incubated 3.5 hours; Heated 2 hours to 1800 ℃, and be incubated 2.5 hours; Heated 2 hours to 1850 ℃, and be incubated 5 hours, heated 2 hours to 1900 ℃, be incubated 5 hours.Again the molybdenum bar base is cooled off behind the sintering; In sintering and the cooling procedure, the flow of hydrogen is 0.7m
3/ h;
The 4th step, more straight
It is more straight to put into four-column hydraulic press through the molybdenum bar base that the 3rd step handled, and straight temperature is set to 1300 ℃, and be 60 minutes heat time heating time, makes the flexibility of molybdenum bar base be not more than 5mm;
In the 5th step, forge
Will be through more straight molybdenum bar base under 1500 ℃ temperature, heated 20 minutes, then, on precise forging machine, the molybdenum bar base is carried out forging of multi-pass, the diameter that first passage forges back molybdenum bar base reduces 11mm, the diameter that second passage forges back molybdenum bar base reduces 3mm, finally makes the molybdenum electrode bar that diameter is 54mm.
Get the molybdenum electrode bar that present embodiment makes and detect, the barred body structured size, quality is even, no burr, no surface checking, density is 9.8g/cm
3, number of die is 2000/cm
2
Embodiment 2
The first step, the choosing of molybdenum powder
Choosing granularity is 5.0 μ m, and pine is than being 1.5g/cm
3Molybdenum powder as raw material;
Second step, pressed bar
The molybdenum powder that the first step is chosen is packed in the cylindrical mold, and the mould that will install molybdenum powder is again put into cold isostatic press and suppressed, and the pressure of cold isostatic press is set to 200Mpa, pressurize 15 minutes again after the compacting, and making diameter is the molybdenum bar base of 90mm;
The 3rd step, sintering molybdenum bar base
The second molybdenum bar base that make of step is packed in the intermediate frequency furnace, and charge into hydrogen in stove, carry out the segmented sintering then, heating earlier made furnace temperature rise to 1000 ℃ from 20 ℃ in 4 hours, was incubated 2.5 hours then; Heated 1.5 hours to 1250 ℃, and be incubated 2.5 hours; Heated 1.5 hours to 1400 ℃, and be incubated 3.5 hours; Heated 2 hours to 1600 ℃, and be incubated 3.5 hours; Heated 2 hours to 1800 ℃, and be incubated 3.5 hours; Heated 2 hours to 1850 ℃, and be incubated 5 hours, heated 2 hours to 1900 ℃, be incubated 6 hours.Again the molybdenum bar base is cooled off behind the sintering; In sintering and the cooling procedure, the flow of hydrogen is 1.0m
3/ h;
The 4th step, more straight
It is more straight to put into four-column hydraulic press through the molybdenum bar base that the 3rd step handled, and straight temperature is set to 1300 ℃, and be 60 minutes heat time heating time, makes the flexibility of molybdenum bar base be not more than 5mm;
In the 5th step, forge
Will be through more straight molybdenum bar base under 1500 ℃ temperature, heated 20 minutes, then, on precise forging machine, the molybdenum bar base is carried out forging of multi-pass, the diameter that first passage forges back molybdenum bar base reduces 17mm, the diameter that second passage forges back molybdenum bar base reduces 15mm, and the diameter that the 3rd passage forges back molybdenum bar base reduces 4mm.Finally make the molybdenum electrode bar that diameter is 54mm.
Get the molybdenum electrode bar that present embodiment makes and detect, the barred body structured size, quality is even, no burr, no surface checking, density is 9.9g/cm
3, number of die is 2150/cm
2
Embodiment 3
The first step, the choosing of molybdenum powder
Choosing granularity is 4.8 μ m, and pine is than being 1.4g/cm
3Molybdenum powder as raw material;
Second step, pressed bar
The molybdenum powder that the first step is chosen is packed in the cylindrical mold, and the mould that will install molybdenum powder is again put into cold isostatic press and suppressed, and the pressure of cold isostatic press is set to 190Mpa, pressurize 10 minutes again after the compacting, and making diameter is the molybdenum bar base of 90mm;
The 3rd step, sintering molybdenum bar base
The second molybdenum bar base that make of step is packed in the intermediate frequency furnace, and charge into hydrogen in stove, carry out the segmented sintering then, heating earlier made furnace temperature rise to 1000 ℃ from 20 ℃ in 4 hours, was incubated 2.5 hours then; Heated 1.5 hours to 1250 ℃, and be incubated 2.5 hours; Heated 1.5 hours to 1400 ℃, and be incubated 3.5 hours; Heated 2 hours to 1600 ℃, and be incubated 3.5 hours; Heated 2 hours to 1800 ℃, and be incubated 3.5 hours; Heated 2 hours to 1850 ℃, and be incubated 6 hours, heated 2 hours to 1900 ℃, be incubated 5 hours.Again the molybdenum bar base is cooled off behind the sintering; In sintering and the cooling procedure, the flow of hydrogen is 0.8m
3/ h;
The 4th step, more straight
It is more straight to put into four-column hydraulic press through the molybdenum bar base that the 3rd step handled, and straight temperature is set to 1300 ℃, and be 60 minutes heat time heating time, makes the flexibility of molybdenum bar base be not more than 5mm;
In the 5th step, forge
Will be through more straight molybdenum bar base under 1500 ℃ temperature, heated 20 minutes, then, on precise forging machine, the molybdenum bar base is carried out forging of multi-pass, the diameter that first passage forges back molybdenum bar base reduces 12mm, the diameter that second passage forges back molybdenum bar base reduces 13mm, and the diameter that the 3rd passage forges back molybdenum bar base reduces 1mm.Finally make the molybdenum electrode bar that diameter is 64mm.
Get the molybdenum electrode bar that present embodiment makes and detect, the barred body structured size, quality is even, no burr, no surface checking, density is 9.8g/cm
3, number of die is 2050/cm
2
Embodiment 4
The first step, the choosing of molybdenum powder
Choosing granularity is 4.5 μ m, and pine is than being 1.5g/cm
3Molybdenum powder as raw material;
Second step, pressed bar
The molybdenum powder that the first step is chosen is packed in the cylindrical mold, and the mould that will install molybdenum powder is again put into cold isostatic press and suppressed, and the pressure of cold isostatic press is set to 185Mpa, pressurize 13 minutes again after the compacting, and making diameter is the molybdenum bar base of 90mm;
The 3rd step, sintering molybdenum bar base
The second molybdenum bar base that make of step is packed in the intermediate frequency furnace, and charge into hydrogen in stove, carry out the segmented sintering then, heating earlier made furnace temperature rise to 1000 ℃ from 20 ℃ in 4 hours, was incubated 2.5 hours then; Heated 1.5 hours to 1250 ℃, and be incubated 2.5 hours; Heated 1.5 hours to 1400 ℃, and be incubated 4 hours; Heated 2 hours to 1600 ℃, and be incubated 4 hours; Heated 2 hours to 1800 ℃, and be incubated 3.5 hours; Heated 2 hours to 1850 ℃, and be incubated 7 hours, heated 2 hours to 1900 ℃, be incubated 5 hours.Again the molybdenum bar base is cooled off behind the sintering; In sintering and the cooling procedure, the flow of hydrogen is 0.8m
3/ h;
The 4th step, more straight
It is more straight to put into four-column hydraulic press through the molybdenum bar base that the 3rd step handled, and straight temperature is set to 1300 ℃, and be 60 minutes heat time heating time, makes the flexibility of molybdenum bar base be not more than 5mm;
In the 5th step, forge
Will be through more straight molybdenum bar base under 1500 ℃ temperature, heated 20 minutes, then, on precise forging machine, the molybdenum bar base is carried out forging of multi-pass, the diameter that first passage forges back molybdenum bar base reduces 15mm, the diameter that second passage forges back molybdenum bar base reduces 16mm, and the diameter that the 3rd passage forges back molybdenum bar base reduces 1mm.Finally make the molybdenum electrode bar that diameter is 58mm.
Get the molybdenum electrode bar that present embodiment makes and detect, the barred body structured size, quality is even, no burr, no surface checking, density is 9.7g/cm
3, number of die is 2200/cm
2
Embodiment 5
The first step, the choosing of molybdenum powder
Choosing granularity is 5.0 μ m, and pine is than being 1.25g/cm
3Molybdenum powder as raw material;
Second step, pressed bar
The molybdenum powder that the first step is chosen is packed in the cylindrical mold, and the mould that will install molybdenum powder is again put into cold isostatic press and suppressed, and the pressure of cold isostatic press is set to 195Mpa, pressurize 11 minutes again after the compacting, and making diameter is the molybdenum bar base of 100mm;
The 3rd step, sintering molybdenum bar base
The second molybdenum bar base that make of step is packed in the intermediate frequency furnace, and charge into hydrogen in stove, carry out the segmented sintering then, heating earlier made furnace temperature rise to 1000 ℃ from 20 ℃ in 4 hours, was incubated 2.5 hours then; Heated 1.5 hours to 1250 ℃, and be incubated 2.5 hours; Heated 1.5 hours to 1400 ℃, and be incubated 3.6 hours; Heated 2 hours to 1600 ℃, and be incubated 3.8 hours; Heated 2 hours to 1800 ℃, and be incubated 3.7 hours; Heated 2 hours to 1850 ℃, and be incubated 6.5 hours, heated 2 hours to 1900 ℃, be incubated 5 hours.Again the molybdenum bar base is cooled off behind the sintering; In sintering and the cooling procedure, the flow of hydrogen is 0.9m
3/ h;
The 4th step, more straight
It is more straight to put into four-column hydraulic press through the molybdenum bar base that the 3rd step handled, and straight temperature is set to 1300 ℃, and be 60 minutes heat time heating time, makes the flexibility of molybdenum bar base be not more than 5mm;
In the 5th step, forge
Will be through more straight molybdenum bar base under 1500 ℃ temperature, heated 20 minutes, then, on precise forging machine, the molybdenum bar base is carried out forging of multi-pass, the diameter that first passage forges back molybdenum bar base reduces 15mm, the diameter that second passage forges back molybdenum bar base reduces 16mm, and the diameter that the 3rd passage forges back molybdenum bar base reduces 4mm.Finally make the molybdenum electrode bar that diameter is 65mm.
Get the molybdenum electrode bar that present embodiment makes and detect, the barred body structured size, quality is even, no burr, no surface checking, density is 9.7g/cm
3, number of die is 2100/cm
2
Embodiment 6
The first step, the choosing of molybdenum powder
Choosing granularity is 5.0 μ m, and pine is than being 1.25g/cm
3Molybdenum powder as raw material;
Second step, pressed bar
The molybdenum powder that the first step is chosen is packed in the cylindrical mold, and the mould that will install molybdenum powder is again put into cold isostatic press and suppressed, and the pressure of cold isostatic press is set to 180Mpa, pressurize 9 minutes again after the compacting, and making diameter is the molybdenum bar base of 100mm;
The 3rd step, sintering molybdenum bar base
The second molybdenum bar base that make of step is packed in the intermediate frequency furnace, and charge into hydrogen in stove, carry out the segmented sintering then, heating earlier made furnace temperature rise to 1000 ℃ from 20 ℃ in 4 hours, was incubated 2.5 hours then; Heated 1.5 hours to 1250 ℃, and be incubated 2.5 hours; Heated 1.5 hours to 1400 ℃, and be incubated 3.6 hours; Heated 2 hours to 1600 ℃, and be incubated 3.8 hours; Heated 2 hours to 1800 ℃, and be incubated 3.7 hours; Heated 2 hours to 1850 ℃, and be incubated 6.5 hours, heated 2 hours to 1900 ℃, be incubated 5 hours.Again the molybdenum bar base is cooled off behind the sintering; In sintering and the cooling procedure, the flow of hydrogen is 0.8m
3/ h;
The 4th step, more straight
It is more straight to put into four-column hydraulic press through the molybdenum bar base that the 3rd step handled, and straight temperature is set to 1300 ℃, and be 60 minutes heat time heating time, makes the flexibility of molybdenum bar base be not more than 5mm;
In the 5th step, forge
Will be through more straight molybdenum bar base under 1500 ℃ temperature, heated 20 minutes, then, on precise forging machine, the molybdenum bar base is carried out forging of multi-pass, the diameter that first passage forges back molybdenum bar base reduces 21mm, the diameter that second passage forges back molybdenum bar base reduces 13mm, and the diameter that the 3rd passage forges back molybdenum bar base reduces 2mm.Finally make the molybdenum electrode bar that diameter is 64mm.
Get the molybdenum electrode bar that present embodiment makes and detect, the barred body structured size, quality is even, no burr, no surface checking, density is 9.9g/cm
3, number of die is 2160/cm
2
Claims (3)
1. adopt the finish forge legal system to be equipped with the method for molybdenum electrode bar, it is characterized in that, comprise the steps:
The first step, the choosing of molybdenum powder
Choosing granularity is 4.5～5.0 μ m, and pine is than being 1.25～1.5g/cm
3Molybdenum powder as raw material;
Second step, pressed bar
The molybdenum powder that the first step is chosen is packed in the cylindrical mold, the mould that will install molybdenum powder is again put into cold isostatic press and is suppressed, and the pressure of cold isostatic press is set to 180～200Mpa, pressurize 8～15 minutes again after the compacting, and making diameter is the molybdenum bar base of 68～100mm;
The 3rd step, sintering molybdenum bar base
The second molybdenum bar base that make of step is packed in the intermediate frequency furnace, and in stove, charge into hydrogen, carry out the segmented sintering then, again the molybdenum bar base is cooled off behind the sintering; In sintering and the cooling procedure, the flow of hydrogen is 0.7～1.0m
3/ h;
The 4th step, more straight
It is more straight to put into four-column hydraulic press through the molybdenum bar base that the 3rd step handled, and straight temperature is set to 1300～1350 ℃, and be 60 minutes heat time heating time, makes the flexibility of molybdenum bar base be not more than 5mm;
In the 5th step, forge
To carry out carrying out multi-pass after a fire heats through more straight molybdenum bar base and forge, make molybdenum electrode bar.
2. employing finish forge legal system as claimed in claim 1 is equipped with the method for molybdenum electrode bar, it is characterized in that, the segmented sintering described in the 3rd step is specially: heating earlier made furnace temperature rise to 1000 ℃ from 20 ℃ in 3～4 hours, was incubated 1.5～2.5 hours then; Heated 1.5 hours to 1250 ℃, and be incubated 2.5 hours; Heated 1.5 hours to 1400 ℃, and be incubated 2.5～4 hours; Heated 2 hours to 1600 ℃, and be incubated 3.5～4 hours; Heated 2 hours to 1800 ℃, and be incubated 2.5～3.5 hours; Heated 2 hours to 1850 ℃, and be incubated 5～7 hours, heated 2 hours to 1900 ℃, be incubated 5～6 hours.
3. employing finish forge legal system as claimed in claim 1 or 2 is equipped with the method for molybdenum electrode bar, it is characterized in that, the heating of carrying out multi-pass after the fire heating described in the 5th step forges, be specially: under 1500 ℃ temperature, heated 20 minutes, then, on precise forging machine, the molybdenum bar base is carried out forging of multi-pass, the diameter that first passage forges back molybdenum bar base reduces by 12～21mm, and the diameter that second passage forges back molybdenum bar base reduces by 3～16mm, and the diameter that the 3rd passage forges back molybdenum bar base reduces by 1～4mm.
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| CN201310127672.4A CN103203600B (en) | 2013-04-12 | 2013-04-12 | Adopt finish forge legal system for the method for molybdenum electrode bar |
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| CN104439236A (en) * | 2014-12-23 | 2015-03-25 | 金堆城钼业股份有限公司 | Preparing method of zirconium oxide molybdenum alloy electrode |
| CN104690268A (en) * | 2015-02-25 | 2015-06-10 | 成都易态科技有限公司 | Method and device for performing in-furnace straightening on sintering blank |
| CN107914016A (en) * | 2017-11-08 | 2018-04-17 | 金堆城钼业股份有限公司 | A kind of production method of molybdenum bar |
| CN108356190A (en) * | 2018-01-31 | 2018-08-03 | 金堆城钼业股份有限公司 | A method of big specification molybdenum electrode is produced using large piece weight molybdenum stick |
| CN109014189A (en) * | 2018-08-27 | 2018-12-18 | 广州市石基耐火材料厂 | Molybdenum electrode and preparation method thereof |
| CN109014230A (en) * | 2018-08-31 | 2018-12-18 | 金堆城钼业股份有限公司 | A kind of preparation method of molybdenum grid |
| CN110453166A (en) * | 2019-09-17 | 2019-11-15 | 厦门钨业股份有限公司 | A preparation method for improving the plasticity of pure molybdenum blocks |
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| CN104439236A (en) * | 2014-12-23 | 2015-03-25 | 金堆城钼业股份有限公司 | Preparing method of zirconium oxide molybdenum alloy electrode |
| CN104439236B (en) * | 2014-12-23 | 2016-08-17 | 金堆城钼业股份有限公司 | A kind of preparation method of zirconium oxide molybdenum alloy electrode |
| CN104690268A (en) * | 2015-02-25 | 2015-06-10 | 成都易态科技有限公司 | Method and device for performing in-furnace straightening on sintering blank |
| CN107914016A (en) * | 2017-11-08 | 2018-04-17 | 金堆城钼业股份有限公司 | A kind of production method of molybdenum bar |
| CN107914016B (en) * | 2017-11-08 | 2020-12-15 | 金堆城钼业股份有限公司 | Production method of molybdenum strip |
| CN108356190A (en) * | 2018-01-31 | 2018-08-03 | 金堆城钼业股份有限公司 | A method of big specification molybdenum electrode is produced using large piece weight molybdenum stick |
| CN109014189A (en) * | 2018-08-27 | 2018-12-18 | 广州市石基耐火材料厂 | Molybdenum electrode and preparation method thereof |
| CN109014189B (en) * | 2018-08-27 | 2020-11-06 | 广州市石基耐火材料厂 | Molybdenum electrode and preparation method thereof |
| CN109014230A (en) * | 2018-08-31 | 2018-12-18 | 金堆城钼业股份有限公司 | A kind of preparation method of molybdenum grid |
| CN109014230B (en) * | 2018-08-31 | 2021-11-05 | 金堆城钼业股份有限公司 | Preparation method of molybdenum metal grid |
| CN110453166A (en) * | 2019-09-17 | 2019-11-15 | 厦门钨业股份有限公司 | A preparation method for improving the plasticity of pure molybdenum blocks |
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