CN87102660A - The method of low-pressure semi-continuous pipe casting - Google Patents
The method of low-pressure semi-continuous pipe casting Download PDFInfo
- Publication number
- CN87102660A CN87102660A CN 87102660 CN87102660A CN87102660A CN 87102660 A CN87102660 A CN 87102660A CN 87102660 CN87102660 CN 87102660 CN 87102660 A CN87102660 A CN 87102660A CN 87102660 A CN87102660 A CN 87102660A
- Authority
- CN
- China
- Prior art keywords
- liquid metal
- tubing
- crystallizer
- die cavity
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention is that a kind of liquid metal that makes is warming up to pouring temperature in closed container, insulation again, and the thrust of air by compression rises up into metal mold (being made of inside and outside crystallizer) die cavity then.Crystallization under the operating mode of isolated outside air, removing from mould also replenish liquid metal, finish the continuous casting of tubing.This method can reduce oxidation, prevents defectives such as pore, cold shut, slag inclusion, and can obtain the tubing of inner wall smooth.
Description
The present invention relates to the method for a kind of cast metal tubing, be specially adapted to process general grey cast-iron and spheroidal graphite cast-iron tubing.
Existing domestic general top-pour formula semi-continuous pipe casting, running gate system all exposes, and has increased contacting of liquid metal and air, and oxidation is liquid metal make deficiency sometimes also seriously, makes the casting flaws such as pore, slag inclusion and cold shut of tubing be difficult to overcome.
Looking into U.S. Pat I164/85 164/421 and other similar patent is technology and the equipment of producing hollow ingot casting continuously.Though this technology has solved above-mentioned quality problems, because no interior crystallizer, inner wall surface is coarse, and other the part blank of machinery that is only limited to production ring-type and tubular is cylinder iron managed with following water, can not produce the upper hose material of inner wall smooth.
The objective of the invention is to provide a kind of method of improved casting tubing.It makes liquid metal be subjected to air pressure thrust to enter die cavity under the operating mode of isolated outside air, and running gate system is airtight, except that can preventing above-mentioned defective, and can obtain the upper hose material of inner wall smooth.
The present invention is achieved in that the liquid metal after the fusing pours into from the cup 14 that the coreless induction coil is housed, enter closed container 6(promptly with the pneumatic casting ladle of short coil centreless line-frequency induction device through sprue graphite-pipe 12) the molten metal temperature is transferred to pouring temperature after, feed compressed air by compressed air gateway 13, make liquid metal enter the die cavity that constitutes by outer crystallizer 5 and interior crystallizer 15 through the annular channel of interior crystallizer graphite-pipe 10 and outer crystallizer graphite-pipe 11 formation.The lifting height of metal bath surface is controlled automatically by bipolar fluid level controller 16.Inside and outside crystallizer all is equipped with chilled water unit, and the cooling water of inside and outside crystallizer is joined by inside and outside crystallizer intake- outlet 3,4,8,9 and cooling water pipeline respectively, constitutes cooling water recirculation system.Liquid metal in die cavity solidification forming gradually under the effect of inside and outside crystallizer cooling water, part after the moulding proposes from die cavity with the isolated plant on the lifter plate 2, and along 1 rising of lifter plate slideway, because compressed-air actuated continuation effect, liquid metal in the closed container 6 replenishes in die cavity immediately, so constantly replenish, cooling, propose, replenishing back and forth carries out said process continuously again, the body that die cavity is suggested outward constantly increases, after waiting to meet the requirements of length, discharge air pressure by compressed air gateway 13 through reversal valve, outer crystallizer separates with closed container simultaneously, molten metal in the die cavity is descended, the process of continuous pipe-casting is interrupted, and cast tube all proposes from die cavity then, finishes the casting of a tubing to this.
Through leveling crystallizer, carry out the production process of next tubing behind decline lifter plate and each matched moulds again.
After liquid metal in the closed container consumes, can be in cup 14 places supply.Be not subjected to the restriction of cast tube production process during supply, can carry out in the continuous pipe-casting process, also can carry out when the cast tube interval, flexibility can be carried out according to the condition of production greatly at any time.
Liquid metal discharge port 7 is established in the bottom of closed container 6, is used for when stopping production or catastrophe failure takes place liquid metal being emitted.But when beyond pause in short-term in meet producing and the closed container total generic failure taking place and needing repairing, needn't emit liquid metal, available line-frequency induction device insulation.
Because this method is to adopt the technology that proposes from bottom to top, can continue to hang its upper end after the tubing depanning and carry out vertical transport, in course of conveying, utilize its deadweight to make tubing from straight, straightening equipment needn't be set in addition.
Description of drawings:
Accompanying drawing is the cutaway view of a kind of embodiment of the present invention.
Number 1 among the figure: the lifter plate slideway
Number 7 among the figure: the liquid metal discharge port
Number 8 among the figure: the interior crystallizer cooling water intake
Number 9 among the figure: the interior crystallizer cooling water outlet
Number 10 among the figure: the interior crystallizer graphite-pipe
Number 11 among the figure: outer crystallizer graphite-pipe
Number 12 among the figure: the sprue graphite-pipe
Number 15 among the figure: interior crystallizer
Claims (3)
1, a kind of method of casting tubing is characterized in that: liquid metal is subjected to the thrust of low-pressure compressed air to enter the die cavity of metal mold (being made of inside and outside crystallizer) along special running channel rising, and finishes continuous cast pipe technology in closed container.
2, in accordance with the method for claim 1, it is characterized in that: the fervid pipe of depanning hangs its upper end, keeps the tubing vertical transport, finishes straightening technology by deadweight in transportation, need not to establish in addition straightening equipment.
3, in accordance with the method for claim 1, can asynchronously with cast tube carry out when replenishing liquid metal, flexibility is big, liquid metal utilization rate height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102660 CN87102660A (en) | 1987-04-13 | 1987-04-13 | The method of low-pressure semi-continuous pipe casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102660 CN87102660A (en) | 1987-04-13 | 1987-04-13 | The method of low-pressure semi-continuous pipe casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87102660A true CN87102660A (en) | 1988-11-02 |
Family
ID=4814056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87102660 Pending CN87102660A (en) | 1987-04-13 | 1987-04-13 | The method of low-pressure semi-continuous pipe casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87102660A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102451894A (en) * | 2011-08-30 | 2012-05-16 | 苏州富瑞铜业有限公司 | Device and method for performing semicontinuous casting on hollow ingot |
-
1987
- 1987-04-13 CN CN 87102660 patent/CN87102660A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102451894A (en) * | 2011-08-30 | 2012-05-16 | 苏州富瑞铜业有限公司 | Device and method for performing semicontinuous casting on hollow ingot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102626771B (en) | Water-cooling casting method and device for hollow pipe blank | |
| CN202517011U (en) | Water-cooling casting device for hollow pipe blank | |
| CN201105315Y (en) | Device for horizontal continuous casting of cast-iron pipe profile | |
| CN107735195B (en) | With the equipment of improved metal stowage unit continuously or semi-continuously casting metal | |
| CN115007839A (en) | Semi-solid rheoforming low-pressure casting method | |
| US2683294A (en) | Metal transfer method and apparatus | |
| US3200456A (en) | Continuous casting method and apparatus | |
| CZ541684A3 (en) | Process of continuous casting cast iron socket pipes and apparatus for making the same | |
| CN87102660A (en) | The method of low-pressure semi-continuous pipe casting | |
| CN111230072B (en) | Stainless steel/carbon steel composite pipe pouring system and pouring process thereof | |
| US3653426A (en) | Furnace pouring and casting system | |
| CN111054896A (en) | Water-cooling dummy bar head device for casting | |
| CN109465420A (en) | A kind of die casting machine that casting can be allowed to be quickly cooled down solidification | |
| JPH04231144A (en) | Achieving device for low pressure casting, its mold and its device | |
| CN213379221U (en) | Billet vacuum pouring device | |
| CN215237633U (en) | Gearbox casting mould | |
| CN208322032U (en) | Metal die-casting equipment | |
| CN206936339U (en) | A kind of Rotating caster mold cooling system | |
| KR102365088B1 (en) | Automatic continuous supply system FOR clean molten metal | |
| CN206276900U (en) | A kind of special apparatus for pouring of intermediate frequency furnace | |
| CN218395853U (en) | Large-size slab ingot pouring device for high-strength and high-toughness zinc-based wear-resistant alloy | |
| CN212734078U (en) | Anti-adhesion device for refined lead ingot production | |
| US4355680A (en) | Method and apparatus for continuous casting of hollow articles | |
| CN217964747U (en) | High-speed steel roll casting ladle balling device | |
| CN210702445U (en) | Horizontal automatic feeding mechanism for die casting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |