CN105665646A - Efficient molding core production method for water glass sand blowing hardening - Google Patents
Efficient molding core production method for water glass sand blowing hardening Download PDFInfo
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- CN105665646A CN105665646A CN201610143927.XA CN201610143927A CN105665646A CN 105665646 A CN105665646 A CN 105665646A CN 201610143927 A CN201610143927 A CN 201610143927A CN 105665646 A CN105665646 A CN 105665646A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
- B22C1/186—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents contaming ammonium or metal silicates, silica sols
- B22C1/188—Alkali metal silicates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
- B22C9/123—Gas-hardening
Abstract
The invention discloses an efficient molding core production method for water glass sand blowing hardening. Raw sand, casting water glass and amorphous silicon oxide are mixed by using a sand mixer to obtain a molding core production sand mixture; then, the molding core production sand mixture is filled in a mold through a core injector or a manual method; CO2 gas is blown into a cavity of the mold for blowing hardening by using a CO2 blowing hardening method; the blowing pressure is 0.1-0.4 Mpa; the blowing time is 5-200 s; after the blowing of CO2 gas is finished, compressed air is blown into the cavity of the mold; the blowing pressure is 0.1-0.4 Mpa; the compressed air blowing time is 10-200 s; and the mold is stripped after the blowing is finished. The method can solve the excessive blowing problem in the CO2 blowing method of water glass sand, reduces the adding quantity of the water glass by above 50%, and can prominently improve the mechanical performance of the prepared molding core.
Description
Technical field
The present invention relates to casting technology field, relate to a kind of efficient manufacturing mold core method that sodium silicate sand is blown and hardened more specifically.
Background technology
In current Foundry Production, type efficiently processed, core technology mainly comprise: cold box resin sand coremaking, hot core box resin sand coremaking and resin coating sand coremaking. Cold box resin sand coremaking need to be hardened with the air blowing of amine class gas, and amine class gas smell poisonous, irritant is easy combustion, explosive hazardous substance, and it exists certain risk in production, transport, keeping, use; Hot core box resin sand coremaking and resin coating sand coremaking, mould need to be heated to 180-300 DEG C, energy consumption height, and smell is big, work under bad environment. Above-mentioned manufacturing mold core technology all needs to adopt synthetic organic resin to do cakingagent, artificial synthetic resin's complex manufacturing, cost height, and with artificial synthetic resin coremaking and cast time can discharge in a large number poisonous, have taste gas, contaminate environment, harm workman is healthy.
And existing inorganic cakingagent manufacturing mold core, mainly sodium silicate sand blows CO2Hardening manufacturing mold core technique, sodium silicate sand blows CO2Hardening process is invention in 1948, and nineteen fifty-two starts to apply in foundry. A lot of foundry is still in use now, but sodium silicate sand blows CO2There is following problems in hardening manufacturing mold core technique: easily over-blowing in the application, and core mechanical property is low, for ensureing that water glass sand core has enough processing performances, has to increase water glass add-on, and water glass add-on is up to 5%-8%.
Summary of the invention
It is an object of the invention to provide a kind of efficient manufacturing mold core method that sodium silicate sand is blown and hardened, it is intended to solve sodium silicate sand in prior art and blow CO2The easy over-blowing that hardening manufacturing mold core technique exists, problem that core mechanical property is low.
The present invention realizes like this, the efficient manufacturing mold core method that sodium silicate sand is blown and hardened, utilizes sand mill to mix roughing sand, casting water glass and non-crystalline type silicon oxide, obtains compound, then compound is inserted mould molding by core shooting machine or manual method, adopt and blow CO2Hardening process is by CO2Gas is blown in mold cavity to carry out hardening of blowing, and blow gas pressure is 0.1-0.4Mpa, blows time 5-200s, blows CO2After gas terminates, changing blowing compressed air, be blown in mold cavity by pressurized air, blow gas pressure is 0.1-0.4Mpa, blowing compressed air time 10-200s, blows and terminates rear molding.
Further, described compound is made up of the raw material of following mass percent: roughing sand 92.5-98.0%, casting water glass 1.2-5% and non-crystalline type silicon oxide 0.1-2.5%.
Further, described compound is made up of the raw material of following mass percent: roughing sand 95.5-97.3%, casting water glass 1.8-3.0% and non-crystalline type silicon oxide 0.18-1.5%.
Further, described roughing sand is that great Lin washes silica sand, cleans silica sand, enveloping field washing silica sand or sea, Fujian sand.
Further, described casting water glass is Shenyang remittance sub-logical novel water glass HYT-S-101, HYT-S-102, HYT-S-104 or HYT-S-106.
Further, described non-crystalline type silicon oxide is silicon ash, zirconium matter gaseous oxidation silicon, precipitated silica or pyrolysis method white carbon black.
Further, described non-crystalline type silicon oxide is zirconium matter gaseous oxidation silicon.
Further, CO is blown2Pulsed is adopted to blow during gas.
Relative to prior art, the useful effect of the present invention is as follows:
The present invention provides a kind of efficient manufacturing mold core method that sodium silicate sand is blown and hardened, it is possible to solves sodium silicate sand and blows CO2Method over-blowing problem; water glass add-on is made to reduce more than 50%; the type obtained, core mechanical property can being made to be significantly improved, tensile strength can reach more than 1.6Mpa, and core, sand mold soaking and scattering quality are good simultaneously; the easy desanding of foundry goods; the renewable reuse of old sand, and gas forming amount is low, and type core preparation process is nontoxic and has no irritating odor; can improve working conditions, be conducive to environment protection.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
The efficient manufacturing mold core method that a kind of sodium silicate sand that the embodiment of the present invention provides is blown and hardened, sand mill is utilized to mix roughing sand, casting water glass and non-crystalline type silicon oxide, obtain compound, then compound is inserted mould molding by core shooting machine or manual method, adopt and blow CO2Hardening process is by CO2Gas is blown in mold cavity to carry out hardening of blowing, and blow gas pressure is 0.1-0.4Mpa, blows time 5-200s; 3-30mm is slim, core blows 5-15s, be greater than 30mm thicker, core proper extension blow CO2Gas time, air blowing method can adopt continuous air blowing, pulse gassing; Blow CO2After gas terminates, changing blowing compressed air, be blown in mold cavity by pressurized air, blow gas pressure is 0.1-0.4Mpa, blowing compressed air time 10-200s; 3-30mm is slim, core blows 10-20s, is greater than the time of 30mm thicker, core proper extension blowing compressed air, and the object of blowing compressed air cleans out the CO of residual in mold cavity2Gas, prevents the CO of residual in chamber2Gas and water glass continue reaction, and over-blowing phenomenon occurs. Air blowing terminates rear molding.
In embodiments of the present invention, compound is made up of the raw material of following mass percent: roughing sand 92.5-98.0%, casting water glass 1.2-5% and non-crystalline type silicon oxide 0.1-2.5%. Preferably, compound is made up of the raw material of following mass percent: roughing sand 95.5-97.3%, casting water glass 1.8-3.0% and non-crystalline type silicon oxide 0.18-1.5%.
In embodiments of the present invention, roughing sand is that great Lin washes silica sand, cleans silica sand, enveloping field washing silica sand or sea, Fujian sand. Casting water glass is Shenyang remittance sub-logical novel water glass HYT-S-101, HYT-S-102, HYT-S-104 or HYT-S-106. Non-crystalline type silicon oxide is silicon ash, zirconium matter gaseous oxidation silicon, precipitated silica or pyrolysis method white carbon black, it is preferable that, non-crystalline type silicon oxide is zirconium matter gaseous oxidation silicon.
As an optimal way of the embodiment of the present invention, blow CO2Pulsed is adopted to blow during gas.
In embodiments of the present invention, compound is inserted mold cavity by core shooting machine and is carried out shaping concrete mode and be: according to proportioning raw materials by compound mixed after add core shooting machine blasting unit, under 0.4-0.7Mpa air pressure, compound core shooting machine is injected in mold cavity.
In embodiments of the present invention, compound is inserted mould by manual method and is carried out shaping concrete mode and be: according to proportioning raw materials by compound mixed after, by quicksand groove, continuously flow into mold cavity, doses is enough and stops adding sand during unnecessary 2-5% in mixing, starts jolt ramming platform, vibration ramming 15-30s, strike off by hand, remove unnecessary compound.
The efficient manufacturing mold core method that the sodium silicate sand that the embodiment of the present invention provides is blown and hardened, it is possible to solve sodium silicate sand and blow CO2Method over-blowing problem, makes water glass add-on reduce more than 50%, the sand mold obtained, core mechanical property can be made to be significantly improved simultaneously, and tensile strength can reach more than 1.6Mpa, and core, sand mold soaking and scattering quality are good, the easy desanding of foundry goods, the renewable reuse of old sand. Compared with resin coremaking, the inventive method gas forming amount reduces more than 90%, and bleb defect is few, casting yield height, and type core system is nontoxic and have no irritating odor by process, can improve working conditions; Solid waste discharge amount is few, is conducive to environment protection.
Embodiment 1
Adopt Suzhou MingZhi Science Co., Ltd MLWA1 sample machine coremaking. Coremaking compound is raw materials used and proportioning is: enveloping field washing sand 1000g, and converge sub-logical novel water glass HYT-S-104,30g, zirconium matter gaseous oxidation silicon 3g in Shenyang. With laboratory blade sand mill by raw materials used mixed even, obtain coremaking sand compound, coremaking sand compound is loaded blasting unit, under 0.5Mpa, with pressurized air, coremaking sand compound being injected standard " 8 " type sample experiment mold cavity, core mould declines with main cylinder, pushes away into air blowing plate to die top, main cylinder rises, and is compressed by air blowing plate; Start purge valve, under 0.15Mpa, by CO2Gas is blown in core die cavity by air blowing plate, pulse gassing: every subpulse, and air blowing 3s, stops 5s, pulse three times; After air blowing terminates, start ventilation valve immediately, close CO2Gas pipeline, pressurized air is accessed the air blowing plate of mould, under 0.2Mpa air pressure, pressurized air is blown in core die cavity, blowing compressed air time 15s, after air blowing terminates, open box and get core, every box three cores, manufacture four boxes, 12 cores, by hydro-test machine testing " 8 " type sample tensile strength, survey real-time intensity in 60s, get the mean value of 5 samples; After indoor placement 24h, the whole intensity of test specimens, gets the mean value of 5 samples. After testing, tensile strength 1.9Mpa after instant tensile strength 0.18Mpa, 24h.
Embodiment 2
Adopt Suzhou MingZhi Science Co., Ltd MLWA1 sample machine coremaking. Coremaking compound is raw materials used and proportioning is: great Lin washes sand 1000g, and converge sub-logical novel water glass HYT-S-106,20g, zirconium matter gaseous oxidation silicon 3g in Shenyang.With laboratory blade sand mill by raw materials used mixed even, obtain coremaking sand compound, coremaking sand compound is loaded blasting unit, under 0.5Mpa, with pressurized air, coremaking sand compound being injected standard " 8 " type sample experiment mold cavity, core mould declines with main cylinder, pushes away into air blowing plate to die top, main cylinder rises, and is compressed by air blowing plate; Start purge valve, under 0.1Mpa, by CO2Gas is blown in core die cavity by air blowing plate, blows time 24s; After air blowing terminates, start ventilation valve immediately, close CO2Gas pipeline, pressurized air is accessed the air blowing plate of mould, under 0.2Mpa air pressure, pressurized air is blown in core die cavity, blowing compressed air time 15s, after air blowing terminates, open box and get core, every box three cores, manufacture four boxes, 12 cores, by hydro-test machine testing " 8 " type sample tensile strength, in 60s, survey real-time intensity; 900W Glanz microwave oven put into by all the other samples, starts microwave oven, and baking 3min, detects the intensity after its oven dry, get the mean value of 5 samples. After testing, instant tensile strength 0.21Mpa, the tensile strength 2.1Mpa after oven dry.
Embodiment 3
Adopt Suzhou MingZhi Science Co., Ltd MLWA1 sample machine coremaking. Coremaking compound is raw materials used and proportioning is: great Lin washes sand 1000g, and converge sub-logical novel water glass HYT-S-101,25g, silicon ash 4g in Shenyang. With laboratory blade sand mill by raw materials used mixed even, obtain coremaking sand compound, coremaking sand compound is loaded blasting unit, under 0.5Mpa, with pressurized air, coremaking sand compound being injected standard " 8 " type sample experiment mold cavity, core mould declines with main cylinder, pushes away into air blowing plate to die top, main cylinder rises, and is compressed by air blowing plate; Start purge valve, under 0.1Mpa, by CO2Gas is blown in core die cavity by air blowing plate, pulse gassing: every subpulse, and air blowing 3s, stops 5s, pulse three times; After air blowing terminates, start ventilation valve immediately, close CO2Gas pipeline, pressurized air is accessed the air blowing plate of mould, under 0.2Mpa air pressure, pressurized air is blown in core die cavity, blowing compressed air time 15s, after air blowing terminates, open box and get core, every box three cores, manufacture four boxes, 12 cores, by hydro-test machine testing " 8 " type sample tensile strength, survey real-time intensity in 60s, get the mean value of 5 samples; 101-1 type put into by all the other samples, in 2000W electric drying oven with forced convection, toasts 10min at 120-150 DEG C, detects it and dries the rear cool sample tensile strength to room temperature, gets the mean value of 5 samples. After testing, instant tensile strength 0.22Mpa, the tensile strength 1.91Mpa after oven dry.
Embodiment 4
Adopt Suzhou MingZhi Science Co., Ltd MLWA1 sample machine coremaking. Coremaking compound is raw materials used and proportioning is: sea, Fujian sand 1000g, and converge sub-logical novel water glass HYT-S-102,30g, silicon ash 3g in Shenyang. With laboratory blade sand mill by raw materials used mixed even, obtain coremaking sand compound, coremaking sand compound is loaded blasting unit, under 0.5Mpa, with pressurized air, coremaking sand compound being injected standard " 8 " type sample experiment mold cavity, core mould declines with main cylinder, pushes away into air blowing plate to die top, main cylinder rises, and is compressed by air blowing plate; Start purge valve, under 0.1Mpa, by CO2Gas is blown in core die cavity by air blowing plate, pulse gassing: every subpulse, and air blowing 3s, stops 5s, pulse three times;After air blowing terminates, start ventilation valve immediately, close CO2Gas pipeline, pressurized air is accessed the air blowing plate of mould, under 0.2Mpa air pressure, pressurized air is blown in core die cavity, blowing compressed air time 15s, open box and get core, every box three cores, manufacture four boxes, 12 cores, by hydro-test machine testing " 8 " type sample tensile strength, survey real-time intensity in 60s, get the mean value of 5 samples; After 24h, the whole intensity of test specimens, gets the mean value of 5 samples. After testing, tensile strength 1.75Mpa after instant tensile strength 0.15Mpa, 24h.
Embodiment 5
In the present embodiment, coremaking mix material proportioning is: enveloping field washing sand 40Kg, converge sub-logical novel water glass HYT-S-106 in Shenyang, 1.0Kg, zirconium matter gaseous oxidation silicon 0.1Kg, raw material is successively dropped in sand mill, sand mill used is Qingdao side's letter mechanical equipment factory S206 bowl-type sand mill, coremaking sand compound will be obtained after raw materials used for coremaking mixing, then by artificial core manufacturing craft, coremaking sand compound being inserted core box carries out shaping, concrete, coremaking sand compound is continuously flowed into 37kg core core box by quicksand groove, doses is enough and stops adding sand during unnecessary 2-5% for the mixing of coremaking sand, start jolt ramming platform, jolt ramming 20s, jolt ramming platform used is tin south casting machine XNZ29 jolt ramming platform, core head surface is struck off by hand after jolt ramming, by two gas blow pipe insertion core centers, under 0.2Mpa, by CO2Gas is blown in core die cavity by gas blow pipe, pulse gassing: every subpulse, and air blowing 5s, stops 5s, pulse four times; After air blowing terminates, start ventilation valve immediately, close CO2Gas pipeline, accesses pressurized air, under 0.2Mpa air pressure, is blown into by pressurized air in core die cavity, blowing compressed air time 30s, under crane is auxiliary, opens core box, takes out core. Core is placed 24h or longer time between storage core, gets final product mould assembling after contained humidity volatilizees, cast. After testing, during core water content 0.5-1%, tensile strength 1.6Mpa.
Embodiment 6
In the present embodiment, moulding mix material proportioning is: enveloping field washing sand 100Kg, and converge sub-logical novel water glass HYT-S-106,2.0Kg, silicon ash 0.3Kg in Shenyang. Raw material is successively dropped in sand mill, sand mill S20 bowl-type sand mill used, mixed 25s, moulding sand compound is obtained by after raw materials used for moulding mixing, then undertaken shaping by manually moulding sand compound being inserted sandbox, concrete, moulding compound is continuously flowed into 95kg sandbox by quicksand groove, starts jolt ramming platform, jolt ramming 20s, jolt ramming platform used is tin south casting machine XNZ29 jolt ramming platform, strike off sandbox surface by hand after jolt ramming, 4 gas blow pipes are uniformly distributed, insertion sand mold center, under 0.2Mpa, by CO2Gas is blown in sand mold chamber by gas blow pipe, pulse gassing: every subpulse, and air blowing 5s, stops 5s, pulse 6 times; After air blowing terminates, start ventilation valve immediately, close CO2Gas pipeline, accesses pressurized air, under 0.25Mpa air pressure, is blown into by pressurized air in sand mold chamber, blowing compressed air time 60s, in the auxiliary lower molding of crane, deviates from mould. Sand mold places 24h or longer time in workshop, gets final product mould assembling after contained humidity volatilizees, cast. After testing, during sand mold water content 0.5-1%, tensile strength 1.72Mpa.
Embodiment 7
In the present embodiment, moulding mix material proportioning is: sea, Fujian sand 100Kg, and converge sub-logical novel water glass HYT-S-106,2.5Kg, zirconium matter gaseous oxidation silicon 0.3Kg in Shenyang;Successively being dropped in sand mill by raw material, sand mill used is S20 bowl-type sand mill, mixed 30s, obtaining moulding sand compound by after raw materials used for moulding mixing, insert sand loading amount 190kg sandbox by sand hopper, said ratio is mixed 100Kg moulding sand compound again, insert sand loading amount 190kg sandbox, starting jolt ramming platform, jolt ramming 25s, jolt ramming platform used is tin south casting machine XNZ29 jolt ramming platform, sandbox surface is struck off by hand after jolt ramming, by 6 gas blow pipe insertion sand mold centers, under 0.2Mpa, by CO2Gas is blown in core die cavity by gas blow pipe, pulse gassing: every subpulse, and air blowing 6s, stops 6s, pulse 5 times; After air blowing terminates, start ventilation valve immediately, close CO2Gas pipeline, accesses pressurized air, under 0.25Mpa air pressure, is blown into by pressurized air in core die cavity, blowing compressed air time 60s, in the auxiliary lower molding of crane, takes out mould. Sand mold places 24h or longer time in workshop, gets final product mould assembling after contained humidity volatilizees, cast. After testing, during sand mold water content 0.5-1%, tensile strength 1.76Mpa.
Comparative example 1
Adopt Suzhou MingZhi Science Co., Ltd MLWA1 sample machine coremaking. Coremaking mix material proportioning is: great Lin washes sand 1000g, and converge sub-logical novel water glass HYT-S-103,60g in Shenyang; With laboratory blade sand mill by raw materials used for coremaking mixed even, obtain coremaking sand compound, then coremaking sand compound is loaded blasting unit, under 0.5Mpa, with pressurized air, coremaking sand compound being injected standard " 8 " type sample experiment mould, core mould declines with main cylinder, pushes away into air blowing plate to die top, main cylinder rises, and is compressed by air blowing plate; Start purge valve, under 0.2Mpa, by CO2Gas is blown in core die cavity by air blowing plate, blows time 30s; Air blowing terminates rear molding, every box three cores, manufactures four boxes, 12 cores, by hydro-test machine testing " 8 " type sample tensile strength, gets the mean value of 5 samples. After testing, instant tensile strength 0.15Mpa, the tensile strength 0.52Mpa of indoor placement 24h, compares the present invention, and its mechanical property is obviously poor.
Although having described the preferred embodiments of the present invention, but those skilled in the art once the substantially creative concept of cicada, then these embodiments can be made other change and amendment. Therefore, it is intended that the appended claims shall be construed comprise preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, the present invention can be carried out various change and modification and not depart from the spirit and scope of the present invention by the technician of this area. Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these change and modification.
Claims (8)
1. the efficient manufacturing mold core method that a sodium silicate sand is blown and hardened, it is characterized in that, utilize sand mill to mix roughing sand, casting water glass and non-crystalline type silicon oxide, obtain compound, then by core shooting machine or manual method, gained compound being inserted mould carries out shaping, adopts and blows CO2Hardening process is by CO2Gas is blown in mold cavity to carry out hardening of blowing, and blow gas pressure is 0.1-0.4Mpa, blows time 5-200s, blows CO2After gas terminates, changing blowing compressed air, be blown in mold cavity by pressurized air, blow gas pressure is 0.1-0.4Mpa, blowing compressed air time 10-200s, blows and terminates rear molding.
2. the efficient manufacturing mold core method that a kind of sodium silicate sand as claimed in claim 1 is blown and hardened, it is characterized in that, described compound is made up of the raw material of following mass percent: roughing sand 92.5-98.0%, casting water glass 1.2-5% and non-crystalline type silicon oxide 0.1-2.5%.
3. the efficient manufacturing mold core method that a kind of sodium silicate sand as claimed in claim 2 is blown and hardened, it is characterized in that, described compound is made up of the raw material of following mass percent: roughing sand 95.5-97.3%, casting water glass 1.8-3.0% and non-crystalline type silicon oxide 0.18-1.5%.
4. the efficient manufacturing mold core method that a kind of sodium silicate sand as claimed in claim 1 is blown and hardened, it is characterised in that, described roughing sand is that great Lin washes silica sand, cleans silica sand, enveloping field washing silica sand, sea, Fujian sand.
5. the efficient manufacturing mold core method that a kind of sodium silicate sand as claimed in claim 1 is blown and hardened, it is characterised in that, described casting water glass is Shenyang remittance sub-logical novel water glass HYT-S-101, HYT-S-102, HYT-S-104 or HYT-S-106.
6. the efficient manufacturing mold core method that a kind of sodium silicate sand as claimed in claim 1 is blown and hardened, it is characterised in that, described non-crystalline type silicon oxide is silicon ash, zirconium matter gaseous oxidation silicon, precipitated silica or pyrolysis method white carbon black.
7. the efficient manufacturing mold core method that a kind of sodium silicate sand as claimed in claim 6 is blown and hardened, it is characterised in that, described non-crystalline type silicon oxide is zirconium matter gaseous oxidation silicon.
8. the efficient manufacturing mold core method that a kind of sodium silicate sand as claimed in claim 1 is blown and hardened, it is characterised in that, blow CO2Pulsed is adopted to blow during gas.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143927.XA CN105665646A (en) | 2016-03-08 | 2016-03-08 | Efficient molding core production method for water glass sand blowing hardening |
| CN201610724245.8A CN106378420B (en) | 2016-03-08 | 2016-08-25 | Method for manufacturing mold and core by blowing and hardening sodium silicate sand for casting |
| PCT/CN2016/096655 WO2017152589A1 (en) | 2016-03-08 | 2016-08-25 | Method for producing mould and core through curing sodium silicate sand for casting by blowing |
| US16/113,608 US20180361466A1 (en) | 2016-03-08 | 2018-08-27 | Method for producing mould and core through curing sodium silicate sand for casting by blowing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610143927.XA CN105665646A (en) | 2016-03-08 | 2016-03-08 | Efficient molding core production method for water glass sand blowing hardening |
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| CN105665646A true CN105665646A (en) | 2016-06-15 |
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| CN201610143927.XA Pending CN105665646A (en) | 2016-03-08 | 2016-03-08 | Efficient molding core production method for water glass sand blowing hardening |
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| 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 |
| CN108097866A (en) * | 2017-12-21 | 2018-06-01 | 沈阳铸造研究所有限公司 | A kind of method for improving inorganic binder sand intensity |
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| CN109692938A (en) * | 2018-11-20 | 2019-04-30 | 沈阳工业大学 | A kind of combined air blowing hardened sodium silicate sand coremaking additive and application method |
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| CN112792295A (en) * | 2020-12-19 | 2021-05-14 | 郑州煤机格林材料科技有限公司 | Casting molding process with low content of water glass |
| CN113787166A (en) * | 2021-08-26 | 2021-12-14 | 沈阳汇亚通铸造材料有限责任公司 | Alkaline phenolic resin sand-blown carbon dioxide cold core box composition and core making method |
| CN113787172A (en) * | 2021-08-26 | 2021-12-14 | 沈阳汇亚通铸造材料有限责任公司 | Molding and core making method for hardening sodium silicate sand ester for casting and compounding with air blowing hardening |
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| 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 |
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Application publication date: 20160615 |