CN1119565A - Casting sodium silicate sand mould hardening new technology and air supply controller - Google Patents
Casting sodium silicate sand mould hardening new technology and air supply controller Download PDFInfo
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- CN1119565A CN1119565A CN 94111187 CN94111187A CN1119565A CN 1119565 A CN1119565 A CN 1119565A CN 94111187 CN94111187 CN 94111187 CN 94111187 A CN94111187 A CN 94111187A CN 1119565 A CN1119565 A CN 1119565A
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- air
- carbon dioxide
- circuit breaker
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Abstract
The present invention relates to a new process for solidifying water glass sand mould and its air-supply control device. Said invention has no need of changing existent water glass sand moulding process and production condition and uses an air-supply control device specially aplicable to the invented new process to alternatively supply carbon dioxide and compressed air into the sand mould so as to solidify the sand mould. It can economize 70% of carbon dioxide, and can raise the production efficiency and casting quality and reduce labour intensity.
Description
The present invention relates to casting industry, particularly relate to cast steel sodium silicate sand mould hardening technology.
World's cast steel industry generally adopts sodium silicate molding, and its sand mold sclerosis mode mainly contains the filling CO 2 gas hardening and thermal dehydration hardens two kinds.With the thermal dehydration mode of hardening, low because of its production efficiency, cost is high seldom is used.Filling CO 2 gas hardening continuously in the sand mold, because in gas replenishment process, existing chemical reaction sclerosis has gas flow to take away the sclerosis of moisture again, so setting rate is fast, the production efficiency height is by being adopted countries in the world.But this sclerosis mode carbon dioxide-depleted amount is very big, and production cost is than higher.In order to reduce the consumption of carbon dioxide, Japan, the U.S., Britain and China have all carried out saving the research of carbon dioxide consumption, wherein best result of the test is that carbon dioxide is interrupted air supply method, be that the compartment of terrain circulation charges into carbon dioxide in the sand mold, a dead time is promptly arranged between twice filling CO 2 gas, and result of the test can be saved carbon dioxide consumption 40%.But this method is stopping not have gas flow to make the sand mold dehydration in the time of air feed, so setting rate is slow, production efficiency is low, again owing to not developing the air supply controller that matches, so can not be applied to produce always.
The purpose of this invention is to provide and a kind ofly can save the carbon dioxide consumption, can improve the new technology and the air feed automaton of sand mold setting rate and quality again.
The present invention realizes in the following manner: hardening new technology of the present invention will rely on special supporting air supply controller to realize.Air supply controller is provided with independently carbon dioxide gas circuit and compressed air gas circuit, and the output of two groups of gas circuits is in air circuit breaker outlet separately, and every group of gas circuit can be an independent gas circuit, also can be several gas circuits arranged side by side.The outlet of air circuit breaker connects escape pipe, directly inserts in the sand mold: its connected mode can be that two groups of air circuit breakers connect after the exit merges earlier in the escape pipe insertion sand mold again, also can be to connect escape pipe respectively, and two escape pipes are inserted in the sand molds.During work, the air inlet with the carbon dioxide gas circuit is connected with pipeline with carbon dioxide air source earlier, and the air inlet with the compressed air gas circuit is connected with pipeline with compressed air gas source again.Open carbon dioxide air source, carbon dioxide enters the carbon dioxide gas way switch through decompression with after heating; Open compressed air gas source, compressed air enters the compressed air air circuit breaker through dehydration with after heating.Two groups of air circuit breakers are under the control of its control device, and cycle alternation ground opens and closes, and carbon dioxide and compressed air cycle alternation ground is charged in the sand mold, and sand mold is hardened.The cycle alternation mode has 1-15 second blanking time between twice filling CO 2 gas, just filling CO 2 gas 1-10 second, then fill compression air 1-10 second, and then filling CO 2 gas carries out cycle alternation again; Also can be filling CO 2 gas 1-10 second, stop 1-5 and fill compression air 1-10 second after second again that then filling CO 2 gas carries out cycle alternation.The version ordinary priority of air circuit breaker control device adopts Electronic Control, as the electronic circuit of computer chip is housed, as the control form of the time relay, and also available mechanical pneumatic control formula.Air circuit breaker can adopt magnetic valve, stop valve.
Plenum system of the present invention is compared with the continuous air supply method of carbon dioxide has tangible advantage.The present invention uses compressed air to replace most of carbon dioxide, save about 70% carbon dioxide consumption in the sand mold hardening process, because of the compressed air cost is low, general foundry enterprise has, can also accelerate setting rate so the present invention can reduce casting cost greatly, enhance productivity.The continuous air supply method of carbon dioxide is in the air feed process, easily cause the excessive sand mold that makes of carbon dioxide to return frost, influence sand-mould quality, thereby influence casting quality, the present invention is in the air feed process, because improved the ratio of dehydration sclerosis, the phenomenon of frost can not appear returning because of carbon dioxide is excessive in sand mold, so plenum system of the present invention can improve casting product quality.Adopt plenum system of the present invention, operating personnel only need touch the button, and just can realize automatic air feed, therefore can also reduce labor strength.
Figure one is a schematic diagram of the present invention;
Figure two is air supply controller front views.
Figure three is the vertical views at figure two A-A places.
The invention will be further described below in conjunction with accompanying drawing:
Composition of the present invention has pressure reducer [1], gas bomb [2], heater [3], carbon dioxide air circuit breaker [4], dehydrator [5], compressed air air circuit breaker [6], air circuit breaker control device [7], heater control device [8], shell [9], carbon dioxide tracheae [10], heater [11].Pressure reducer [1], gas bomb [2], carbon dioxide tracheae [10], carbon dioxide air circuit breaker [4] connect into the carbon dioxide gas circuit with copper pipe successively; Dehydrator [5], compressed air air circuit breaker [6] is connected to the compressed air gas circuit with metal tube successively.Air circuit breaker control device [7] is connected with carbon dioxide air circuit breaker [4], compressed air air circuit breaker [6]; Heating control apparatus [8] is connected with heater [3], and air circuit breaker control device [7] is the electric circuit construction that microcomputer chip is housed, and air circuit breaker uses magnetic valve.During work, pressure reducer [1] is connected with carbon dioxide air source [12]; Dehydrator [5] is connected with compressed air gas source [13].Carbon dioxide air circuit breaker [4] is formed two groups of air circuit breakers with compressed air air circuit breaker [6], its outlet is connected with sand mold [14], its connected mode can connect escape pipe respectively in two groups of air circuit breaker gas outlets, promptly there are two escape pipes to insert in the sand mold, also can be that two groups of air circuit breaker gas outlets connect to be merged into and insert behind the escape pipe after air circuit breaker control device [7] is accepted instruction in the sand mold, carry out work according to given parameter, controlling two groups of air circuit breakers alternately opens and closes, carbon dioxide air circuit breaker [4] opened for 3 seconds, toward the middle filling CO 2 gas of sand mold [14], the carbon dioxide air circuit breaker is closed, compressed air air circuit breaker [6] opened for 3 seconds, filled the compression air in sand mold [14].
Claims (6)
1, a kind of casting sodium silicate sand mould hardening new technology, be that the compartment of terrain circulation charges into carbon dioxide in the sand mold, be 1-15 second the blanking time of its twice filling CO 2 gas, it is characterized in that filling the compression air charging into for twice in the blanking time of carbon dioxide in sand mold.
2, hardening new technology according to claim 1 is characterized in that in blanking time, when carbon dioxide stops to inflate, then filled the compression air.
3, hardening new technology according to claim 1 is characterized in that in blanking time, when carbon dioxide stops to inflate, stopped 1-5 after second, then filled the compression air again.
4, a kind of air supply controller that is specially adapted for the described hardening new technology of claim 1, comprise pressure reducer [1], heater [11], carbon dioxide air circuit breaker [4], it is characterized in that by pressure reducer [1], gas bomb [2], carbon dioxide tracheae [10], carbon dioxide air circuit breaker [4] is interconnected to the carbon dioxide gas circuit, by dehydrator [5], compressed air air circuit breaker [6] connects into the compressed air gas circuit, air circuit breaker control device [7] respectively with carbon dioxide air circuit breaker [4], compressed air air circuit breaker [6] connects, and heater control device [8] is connected with heater [3].
5, air supply controller according to claim 4 is characterized in that air circuit breaker control device [7] can adopt electronic circuit, electrical equipment, mechanical structure.
6, air supply controller according to claim 4 is characterized in that pressure reducer [1], carbon dioxide tracheae [10] are installed in the heater [11].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111187 CN1119565A (en) | 1994-09-26 | 1994-09-26 | Casting sodium silicate sand mould hardening new technology and air supply controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111187 CN1119565A (en) | 1994-09-26 | 1994-09-26 | Casting sodium silicate sand mould hardening new technology and air supply controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1119565A true CN1119565A (en) | 1996-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94111187 Pending CN1119565A (en) | 1994-09-26 | 1994-09-26 | Casting sodium silicate sand mould hardening new technology and air supply controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1119565A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702783A (en) * | 2011-07-19 | 2014-04-02 | 亚世科化学有限公司 | Method for curing cold-box foundry shape with gaseous catalyst |
| CN103949583B (en) * | 2014-04-22 | 2016-08-17 | 重庆长江造型材料（集团）股份有限公司 | Hot air apparatus control system |
| CN106378420A (en) * | 2016-03-08 | 2017-02-08 | 沈阳汇亚通铸造材料有限责任公司 | Mould core making method for casting sodium silicate sand air-blowing hardening |
| CN108746506A (en) * | 2018-05-29 | 2018-11-06 | 新乡市长城铸钢有限公司 | A method of preventing the reduction of sand mo(u)ld surface strength |
-
1994
- 1994-09-26 CN CN 94111187 patent/CN1119565A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702783A (en) * | 2011-07-19 | 2014-04-02 | 亚世科化学有限公司 | Method for curing cold-box foundry shape with gaseous catalyst |
| CN103949583B (en) * | 2014-04-22 | 2016-08-17 | 重庆长江造型材料（集团）股份有限公司 | Hot air apparatus control system |
| CN106378420A (en) * | 2016-03-08 | 2017-02-08 | 沈阳汇亚通铸造材料有限责任公司 | Mould core making method for casting sodium silicate sand air-blowing hardening |
| WO2017152589A1 (en) * | 2016-03-08 | 2017-09-14 | 沈阳汇亚通铸造材料有限责任公司 | Method for producing mould and core through curing sodium silicate sand for casting by blowing |
| US20180361466A1 (en) * | 2016-03-08 | 2018-12-20 | Shenyang Hyaton Foundry Material Co., Ltd | Method for producing mould and core through curing sodium silicate sand for casting by blowing |
| CN106378420B (en) * | 2016-03-08 | 2021-04-06 | 沈阳汇亚通铸造材料有限责任公司 | Method for manufacturing mold and core by blowing and hardening sodium silicate sand for casting |
| CN108746506A (en) * | 2018-05-29 | 2018-11-06 | 新乡市长城铸钢有限公司 | A method of preventing the reduction of sand mo(u)ld surface strength |
| CN108746506B (en) * | 2018-05-29 | 2019-11-08 | 新乡市长城铸钢有限公司 | A method of preventing the reduction of sand mo(u)ld surface strength |
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| WD01 | Invention patent application deemed withdrawn after publication |