CN109909507A - A kind of process of powder smelting rolling molybdenum member piece - Google Patents
A kind of process of powder smelting rolling molybdenum member piece Download PDFInfo
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- CN109909507A CN109909507A CN201711313400.8A CN201711313400A CN109909507A CN 109909507 A CN109909507 A CN 109909507A CN 201711313400 A CN201711313400 A CN 201711313400A CN 109909507 A CN109909507 A CN 109909507A
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- member piece
- rolling
- molybdenum
- molybdenum member
- powder
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Abstract
The present invention relates to a kind of process of powder smelting rolling molybdenum member piece, molybdenum powder → conjunctions batch → compacting molybdenum member piece blank → sintering → rolling → size → polishing → chemical treatment → finished product；The technique of rolling is used in production technology.The characteristics of this technique is the physical property for both having remained punching molybdenum member piece, the poor defect of Forging Technology physical property is overcome again, not only increases the intensity of molybdenum member piece, optimizes its performance, and existing process flow is simplified, integrated yield has been increased to 70%.
Description
Technical field
The present invention relates to a kind of processing methods of molybdenum member piece, and the work of molybdenum member piece is produced in particular by the method for powder smelting rolling
Process.
Technical background
Currently, producing there are two types of the techniques of molybdenum member piece: one is molybdenum plate blanks after rolling plate, and punching forms, and process flow is such as
Under: molybdenum powder → conjunction batch → green compact → is sintered → rolls plate → punching → polishing → size → this work of chemical treatment → finished product
Skill yield rate is low, only the 50% of total amount of feeding, and raw material availability is low.
Second of technique is to be directly compressed into molybdenum member monolithic with molybdenum powder, is forged and pressed after sintering, process flow is as follows:
Molybdenum powder → conjunction batch → compacting monolithic blank → sintering → forging and stamping → size → polishing → this technique of chemical treatment → finished product
Molybdenum member piece high yield rate is produced, reaches as high as 65%, but molybdenum member piece intensity is low, it is easy to break, it is difficult to meet the performance of material
It is required that.
Summary of the invention
In order to overcome the shortcomings of that prior art manufactures molybdenum member piece, the present invention provides a kind of new technique, i.e., is rolled with powder smelting
Method produce molybdenum member piece.
The basic main points of the technical solution adopted by the present invention to solve the technical problems are: present invention process is in Zhong Hechong
Molybdenum powder is directly pressed into molybdenum member piece blank by the rolling mill practice designed on the basis of technique and Forging Technology processed, rolled after sintering and
At process flow is as follows: molybdenum powder → conjunction batch → compacting molybdenum member piece blank → sintering → rolling → size → polishing → change
Processing → finished product concrete operations are exactly that first molybdenum powder is criticized by closing, and are then charged into composable mold, are pressed into molybdenum with hydraulic press
Then first piece blank is sintered in logical hydrogen protection Intermediate frequency sintering furnace, sintered blank is heated to one in logical hydrogen heating furnace
Determine temperature, and held for some time, through mill milling after coming out of the stove, the operation of rolling successively subtracts thickness in four times, blank, after rolling
Blank is finished product using shearing, size, polishing.
Present invention process uses composable mold during suppressing molybdenum member piece blank, and it is raw to change monolithic in Forging Technology
The method of production, using monolithic, biplate, four, the production method of multi-disc tandem rolling, corresponding specification is respectively as follows: monolithic rolling, fits
The molybdenum member piece for being 100-120mm for diameter；Biplate rolling, the molybdenum member piece for being 70-90mm suitable for diameter；Four rollings, are fitted
The molybdenum member piece for being 60mm for diameter；Multi-disc tandem rolling, the molybdenum member piece for being 45-55mm suitable for diameter.Production can thus be reduced
Cost makes production efficiency improve 2-3 times.
In addition, a set of oller-raising device is increased after milling train used in present invention process is improved in the structure of former milling train
Make molybdenum member piece during the rolling process without rolling feed inlet deformation, therefore makes rolling molybdenum member piece neat appearance, uniformity.
In short, the characteristics of this technique is the physical property for not only having remained punching molybdenum member piece, but also overcome Forging Technology physical property
Poor defect not only increases the intensity of molybdenum member piece, optimizes its performance, and simplifies existing process flow, will be comprehensive
Composite rate has been increased to 70%.
Specific embodiment
With the method for four rollings simultaneously, 76.2 × 2.5mm of diameter molybdenum member piece is produced: molybdenum powder close and is criticized, then will
It closes the molybdenum powder after criticizing to weigh in 700g (every monolithic weight 175g) loading composable mold, be suppressed with hydraulic press, press power 140mp/
cm2, pressed specification is 60 × 10mm of diameter, when sintering, with the protection Intermediate frequency sintering furnace sintering of logical hydrogen, sintering temperature 1950
DEG C, sintered specification is 52 × 8.5mm of diameter, then rolls sintered blank, and the operation of rolling is hot rolling, first will
Sintered blank is heated to 1100 DEG C in logical hydrogen heating furnace, keeps the temperature 1.5 hours, starts to roll after coming out of the stove, roll altogether four times, the
Once subtract thick 2mm, second of commutation is rolled, and thick 1.5mm is subtracted, and third time commutation is rolled, and subtracts thick 1.5mm, the 4th shaping subtracts thick 0.2-
0.3mm, after rolling specification be diameter 79-80 × 3.2mm, then at shearing shear, then through size, polishing be at
Product.
Claims (2)
1. a kind of process of powder smelting rolling molybdenum member piece, process flow are as follows: molybdenum powder → conjunction batch → compacting molybdenum member piece blank
→ sintering → rolling → size → polishing → chemical treatment → finished product is it is characterized by: use rolling in production technology
Technique.
2. a kind of process of powder smelting rolling molybdenum member piece according to claim 1, it is characterised in that: adopted in production technology
With biplate, four, the scheme of multi-disc tandem rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711313400.8A CN109909507A (en) | 2017-12-12 | 2017-12-12 | A kind of process of powder smelting rolling molybdenum member piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711313400.8A CN109909507A (en) | 2017-12-12 | 2017-12-12 | A kind of process of powder smelting rolling molybdenum member piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109909507A true CN109909507A (en) | 2019-06-21 |
Family
ID=66957123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711313400.8A Withdrawn CN109909507A (en) | 2017-12-12 | 2017-12-12 | A kind of process of powder smelting rolling molybdenum member piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109909507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449846A (en) * | 2019-09-10 | 2019-11-15 | 江苏时代华宜电子科技有限公司 | A kind of molybdenum sheet processing technology |
-
2017
- 2017-12-12 CN CN201711313400.8A patent/CN109909507A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449846A (en) * | 2019-09-10 | 2019-11-15 | 江苏时代华宜电子科技有限公司 | A kind of molybdenum sheet processing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190621 |