CN1439469A - Vacuum feeding hydrocooling mould cast technology - Google Patents
Vacuum feeding hydrocooling mould cast technology Download PDFInfo
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- CN1439469A CN1439469A CN 03110969 CN03110969A CN1439469A CN 1439469 A CN1439469 A CN 1439469A CN 03110969 CN03110969 CN 03110969 CN 03110969 A CN03110969 A CN 03110969A CN 1439469 A CN1439469 A CN 1439469A
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Abstract
A water cooled die casting technique with vacuum feeding includes such steps as closing dies, flowing cooling water through it to control the temp of die surface to be 10-50 deg.C higher than room temp. pouring molten steel with 30-120 deg.c for overheat temp at 800-1500 mm/min of speed via pouring tube, laying aside for 2-10 min, and opening the dies. Its advantages are high quality of steel ingot, not defective riser head, and high utilization rate of material.
Description
Technical field
The invention belongs to the casting of Ferrous Metallurgy, particularly a kind of vacuum feeding water-cooled die casting technology.
Background technology
The cast steel of prior art have last feeding and under the two kinds of technology that contract.Wherein: following feeding technology, because the feeding speed of stream steel does not catch up with, often cause in the ingot blank of production to have pore and shrinkage porosite phenomenon, influenced billet quality and yield rate; And go up the feeding technology, there are pore and shrinkage porosite phenomenon in the casting ingot blank though solved.But because the know-why of its casting limits, the cap mouth section that must cause the top existence of the ingot blank produced not become a useful person.When using ingot blank, must excise the cap mouth section on the ingot blank earlier.Like this, promptly cause the lumber recovery of ingot blank lower, and waste man-hour.
Summary of the invention
Purpose of the present invention is intended to solve the deficiencies in the prior art, has studied a kind of vacuum feeding water-cooled die casting technology.Its technical scheme is: annotate machine with the vacuum water cooled mo(u)ld, step-by-step finish by matched moulds, cast, the demoulding.Its method of operating comprises: the two-half die of die body symmetry is closed close up; Cooling water is injected continuously from inlet a, discharge to exporting b through the water jacket wall-sandwiched layer, the temperature that reaches the control die wall is for being higher than 10～50 degrees centigrade of room temperatures; To flow steel injects from feed trumpet, orifice enters in the die body in the warp, the overtemperature (promptly being higher than its freezing point temperature) of its stream steel is 30～120 degrees centigrade, poring rate is 800～1200 mm/min for the rising of stream steel in die body, and the liquid level that the stream steel injects die body returns the outlet b (avoiding entering the safety cap mouth) that height is no more than cooling water; Cast finishes, and leaves standstill 2～10 minutes, and ingot blank solidifies fully, can die sinking deviate from ingot blank.
Its know-why is: in casting process, molten steel flows into die body by feed trumpet from bottom to top fast through runner brick, molten steel is filled with back (final liquid level must not surpass the height of delivery port wall), feed cooling water in the wall-sandwiched layer of mold continuously, because the effect of recirculated water, (molten steel of injection is low more the closer to top liquid level temperature) solidified on molten steel top in advance, with molten steel " sealing ", forms " sealing " device with " chill ".Along with liquid steel temperature reduces, rapid solidification (effect of recirculated water cooling) is in vacuum state by the molten steel inner chamber of " sealing " successively.So not solidified molten steel and the molten steel that injects behind the feed trumpet are under the atmospheric pressure effect in the stream steel system, system sucks " sealer " by the stream steel, realizes the vacuum feeding.
The advantage of vacuum feeding water-cooled die casting technology of the present invention is: because the vacuum feeding is quick feeding from bottom to top in the casting cycle, cast ingot blank quality height.Simultaneously, eliminated the cap mouth flaw section of ingot blank, reduced the molten steel in the feed trumpet and " annotated surplus ", made the lumber recovery of cast steel ingot blank improve 5～10%.Method of operating is simple, remarkable in economical benefits.
Description of drawings
Figure of description is that the side of vacuum feeding water-cooled die casting technology equipment therefor of the present invention is cutd open structural representation.
Embodiment
The specific implementation process of a kind of vacuum feeding water-cooled die casting technology of the present invention: step-by-step finish by matched moulds, cast, the demoulding with the vacuum water cooled die casting machine, its method of operating comprises:
A, two half modules that die body (3) is symmetrical are closed and are closed up;
B, cooling water is injected continuously from inlet a, discharge to exporting b, the temperature control of die wall (5) should be advisable for 10～50 degrees centigrade being higher than room temperature through water jacket wall-sandwiched layer (4);
C, will flow steel and inject through orifice (2) from feed trumpet (1) and enter die body (3), the overtemperature (promptly being higher than its freezing point temperature) of its stream steel is 30～120 degrees centigrade, poring rate is (rising of stream steel in die body (3)) 800～1500 mm/min, and the stream steel injects the die body liquid level and returns the height that height is no more than coolant outlet b;
D, cast finish, leave standstill 2～10 minutes after, ingot blank solidifies, and can die sinking deviate from.
Claims (1)
1, a kind of vacuum feeding water-cooled die casting technology is step-by-step to finish by matched moulds, cast, the demoulding with the vacuum water cooled die casting machine, it is characterized in that this method of operating comprises:
A, two half modules that die body (3) is symmetrical are closed and are closed up;
B, cooling water is injected continuously from inlet a, discharge to exporting b, the temperature control of die wall (5) should be advisable for 10～50 degrees centigrade being higher than room temperature through water jacket wall-sandwiched layer (4);
C, molten steel is injected from feed trumpet (1), orifice (2) enters die body (3) in the warp, the overtemperature of its molten steel (promptly being higher than its freezing point temperature) is 30～120 degrees centigrade, poring rate is (rising of molten steel in die body (3)) 800～1500 mm/min, and the stream steel injects the die body liquid level and returns the height that height is no more than coolant outlet b;
D, after cast finishes to leave standstill 2～10 minutes, open two half modules of die body (3), the ingot blank that solidifies can be deviate from die sinking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03110969 CN1439469A (en) | 2003-01-26 | 2003-01-26 | Vacuum feeding hydrocooling mould cast technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03110969 CN1439469A (en) | 2003-01-26 | 2003-01-26 | Vacuum feeding hydrocooling mould cast technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1439469A true CN1439469A (en) | 2003-09-03 |
Family
ID=27796801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03110969 Pending CN1439469A (en) | 2003-01-26 | 2003-01-26 | Vacuum feeding hydrocooling mould cast technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN1439469A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061453A1 (en) * | 2006-11-21 | 2008-05-29 | Nanyang Hanye Special Steel Co., Ltd | A casting ingot of vacuum fine equiaxed grain structure |
| CN102069160A (en) * | 2011-01-31 | 2011-05-25 | 中冶京诚工程技术有限公司 | Combined manufacturing device and method for ultra-large rectangular ingot blank inclined casting |
| CN102699287A (en) * | 2012-06-04 | 2012-10-03 | 孙柏良 | Novel steel ingot water cooling casting mold and novel steel ingot water cooling casting method |
| CN102836970A (en) * | 2012-08-29 | 2012-12-26 | 内蒙古北方重工业集团有限公司 | Water cooling die casting process of polygonal steel ingots, and water cooling die casting device |
| CN106715003A (en) * | 2014-09-04 | 2017-05-24 | 于佩尔工程有限公司 | Method for producing iron metal castings |
-
2003
- 2003-01-26 CN CN 03110969 patent/CN1439469A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061453A1 (en) * | 2006-11-21 | 2008-05-29 | Nanyang Hanye Special Steel Co., Ltd | A casting ingot of vacuum fine equiaxed grain structure |
| CN102069160A (en) * | 2011-01-31 | 2011-05-25 | 中冶京诚工程技术有限公司 | Combined manufacturing device and method for ultra-large rectangular ingot blank inclined casting |
| CN102699287A (en) * | 2012-06-04 | 2012-10-03 | 孙柏良 | Novel steel ingot water cooling casting mold and novel steel ingot water cooling casting method |
| CN102836970A (en) * | 2012-08-29 | 2012-12-26 | 内蒙古北方重工业集团有限公司 | Water cooling die casting process of polygonal steel ingots, and water cooling die casting device |
| CN102836970B (en) * | 2012-08-29 | 2015-09-23 | 内蒙古北方重工业集团有限公司 | Polygon steel ingot water-cooled die casting method and water-cooled die casting device |
| CN106715003A (en) * | 2014-09-04 | 2017-05-24 | 于佩尔工程有限公司 | Method for producing iron metal castings |
| CN106715003B (en) * | 2014-09-04 | 2020-03-03 | 于佩尔工程有限公司 | Method for producing ferrous metal casting |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |