CN106077486A - A kind of silica sol precision casting technique of pipe valve - Google Patents
A kind of silica sol precision casting technique of pipe valve Download PDFInfo
- Publication number
- CN106077486A CN106077486A CN201610681892.5A CN201610681892A CN106077486A CN 106077486 A CN106077486 A CN 106077486A CN 201610681892 A CN201610681892 A CN 201610681892A CN 106077486 A CN106077486 A CN 106077486A
- Authority
- CN
- China
- Prior art keywords
- pipe valve
- wax
- temperature
- time
- laisha
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Abstract
The invention discloses the silica sol precision casting technique of a kind of pipe valve, comprise the steps: that (1) designs corresponding mould according to pipe valve shape；(2) wax is injected in the mould in step (1), obtains the wax-pattern identical with pipe valve shape；(3) on wax-pattern five refractory materials, wherein: for the first time: glue zircon sand at wax pattern surface；For the second time: glue Mo Laisha at wax pattern surface；For the third time: glue Mo Laisha at wax pattern surface；4th time: glue Mo Laisha at wax pattern surface；5th time: smear pyrophyllite powder slurry at wax pattern surface；(4) to shell through 1000 DEG C of 1100 DEG C of high temperature sinterings, dewaxing is completed through 1200 DEG C of 1400 DEG C of meltings；(5) to injecting molten metal in the shell after sintering, pipe valve foundry goods after solidification, is prepared；(6) pipe valve foundry goods surfaces externally and internally is carried out frosted, polishing.
Description
Technical field
The present invention relates to the silica sol precision casting technique of a kind of pipe valve, belong to forging processing technique field.
Background technology
Pipe valve refers to some parts, joint and the valve etc. of the connection instrument on pipeline or valve, this type of part work
Being that heavy duty is suppressed as environment, therefore the performance requirement for part is the highest.Part typically uses aluminum alloy material, but existing
Forging Technology mobility when material forges poor, during forging temperature control more difficult, can be potentially encountered decarburization, ftracture and roll over
The problem such as folded, is the more difficult workpiece carrying out and forging.
Summary of the invention
The technical problem to be solved is to provide the silica sol precision casting technique of a kind of pipe valve, by using
Ludox full form casting process, it is achieved that product with one-shot forming, and can exempt from cutting, improves product quality.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is:
The silica sol precision casting technique of a kind of pipe valve, comprises the steps:
(1) according to the mould that the design of pipe valve shape is corresponding；
(2) wax is injected in the mould in step (1), obtains the wax-pattern identical with pipe valve shape；
(3) on wax-pattern five refractory materials, wherein:
For the first time: glue zircon sand at wax pattern surface, being dried under the conditions of constant temperature, constant humidity through 24 hours, wherein temperature is 23
DEG C, humidity is 55RH；
For the second time: glue Mo Laisha at wax pattern surface, being dried under the conditions of constant temperature, constant humidity through 24 hours, wherein temperature is
20 DEG C, humidity is 53RH；
For the third time: glue Mo Laisha at wax pattern surface, being dried under the conditions of constant temperature, constant humidity through 24 hours, wherein temperature is
22 DEG C, humidity is 50RH；
4th time: glue Mo Laisha at wax pattern surface, being dried under the conditions of constant temperature, constant humidity through 24 hours, wherein temperature is
25 DEG C, humidity is 55RH；
5th time: smear pyrophyllite powder slurry at wax pattern surface, make after 24 hours are dried under the conditions of constant temperature, constant humidity
Obtain shell；
(4) to shell through 1000 DEG C of-1100 DEG C of high temperature sinterings, dewaxing is completed through 1200 DEG C of-1400 DEG C of meltings；
(5) to injecting molten metal in the shell after sintering, pipe valve foundry goods after solidification, is prepared；
(6) pipe valve foundry goods surfaces externally and internally is carried out frosted, polishing.
The silica sol precision casting technique of aforesaid a kind of pipe valve, it is characterised in that: in step (3), second time is upper fire-resistant
During material, the particle diameter of Mo Laisha is 50 μm.
The silica sol precision casting technique of aforesaid a kind of pipe valve, it is characterised in that: in step (3), third time is upper fire-resistant
During material, the particle diameter of Mo Laisha is 25 μm.
The silica sol precision casting technique of aforesaid a kind of pipe valve, it is characterised in that: the most fire-resistant on the 4th time in step (3)
During material, the particle diameter of Mo Laisha is 10 μm.
The silica sol precision casting technique of aforesaid a kind of pipe valve, it is characterised in that: the burning of shell in described step (4)
Junction temperature is 1050 DEG C, and smelting temperature is 1250 DEG C.
The silica sol precision casting technique of aforesaid a kind of pipe valve, it is characterised in that: the gold injected in described step (5)
Genus liquid is aluminum alloy material.
The invention has the beneficial effects as follows: this technique is by using the casting technique of Ludox fusible pattern, by wax pattern surface
Carry out repeatedly refractory process, it is ensured that later stage shell can reach corresponding fire resistance, it is simple to the dewaxing in later stage and injection metal
Liquid molding, it is achieved that product can with one-shot forming, and exempt from cutting, and by the frosted polishing to pipe valve surfaces externally and internally at
Reason, improves product quality.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
The silica sol precision casting technique of a kind of pipe valve, comprises the steps: that (1) designs phase according to pipe valve shape
Corresponding mould；(2) wax is injected in the mould in step (1), obtains the wax-pattern identical with pipe valve shape；(3) to wax
Five refractory materials on mould, wherein: for the first time: glue zircon sand at wax pattern surface, were carried out under the conditions of constant temperature, constant humidity through 24 hours
Being dried, wherein temperature is 23 DEG C, and humidity is 55RH；For the second time: glue Mo Laisha at wax pattern surface, through 24 hours in constant temperature, perseverance
Being dried under the conditions of wet, wherein temperature is 20 DEG C, and humidity is 53RH；For the third time: glue Mo Laisha at wax pattern surface, little through 24
Time be dried under the conditions of constant temperature, constant humidity, wherein temperature is 22 DEG C, and humidity is 50RH；4th time: glue not come at wax pattern surface
Sand, was dried under the conditions of constant temperature, constant humidity through 24 hours, and wherein temperature is 25 DEG C, and humidity is 55RH；5th time: at wax
Mould surface smear pyrophyllite powder slurry, prepares shell after 24 hours are dried under the conditions of constant temperature, constant humidity；(4) to type
Shell, through 1000 DEG C of-1100 DEG C of high temperature sinterings, completes dewaxing through 1200 DEG C of-1400 DEG C of meltings；(5) to the shell after sintering
Interior injection molten metal, prepares pipe valve foundry goods after solidification；(6) pipe valve foundry goods surfaces externally and internally is carried out frosted, polishing.
By using the casting technique of Ludox fusible pattern, by carrying out repeatedly refractory process at wax pattern surface, it is ensured that the later stage
Shell can reach corresponding fire resistance, it is simple to the dewaxing in later stage and injection molten metal molding, it is achieved that product can be once
Molding, and exempt from cutting, and by the frosted polishing to pipe valve surfaces externally and internally, improve product quality.
Wherein, in step (3) during the upper refractory material of second time, the particle diameter of Mo Laisha is 50 μm, refractory material in third time
Time, the particle diameter of Mo Laisha is 25 μm, and during the 4th upper refractory material, the particle diameter of Mo Laisha is 10 μm.Do not come by being gradually reduced
The particle diameter of sand, it is ensured that the compactness of wax pattern surface gradually promotes, is conducive to increasing its fire resistance.
Owing to the hardness requirement of pipe valve is relatively lower, find after repetition test, shell in described step (4)
Sintering temperature be 1050 DEG C, when smelting temperature is 1250 DEG C, best results.
In the present embodiment, owing to the hardness requirement of pipe valve is more relatively low, the metal injected in the most described step (5)
Liquid is aluminum alloy material.
In sum, the silica sol precision casting technique of a kind of pipe valve that the present invention provides, by using Ludox to melt
Die cast technique, it is achieved that product with one-shot forming, and can exempt from cutting, improves product quality.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.The technical staff of the industry should
Understanding, the present invention is not restricted to the described embodiments, and the simply explanation present invention's described in above-described embodiment and description is former
Reason, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements
Both fall within scope of the claimed invention.Claimed scope is by appending claims and equivalent thereof
Boundary.
Claims (6)
1. the silica sol precision casting technique of a pipe valve, it is characterised in that: comprise the steps:
(1) according to the mould that the design of pipe valve shape is corresponding；
(2) wax is injected in the mould in step (1), obtains the wax-pattern identical with pipe valve shape；
(3) on wax-pattern five refractory materials, wherein:
For the first time: glue zircon sand at wax pattern surface, being dried under the conditions of constant temperature, constant humidity through 24 hours, wherein temperature is 23
DEG C, humidity is 55RH；
For the second time: glue Mo Laisha at wax pattern surface, being dried under the conditions of constant temperature, constant humidity through 24 hours, wherein temperature is
20 DEG C, humidity is 53RH；
For the third time: glue Mo Laisha at wax pattern surface, being dried under the conditions of constant temperature, constant humidity through 24 hours, wherein temperature is
22 DEG C, humidity is 50RH；
4th time: glue Mo Laisha at wax pattern surface, being dried under the conditions of constant temperature, constant humidity through 24 hours, wherein temperature is
25 DEG C, humidity is 55RH；
5th time: smear pyrophyllite powder slurry at wax pattern surface, make after 24 hours are dried under the conditions of constant temperature, constant humidity
Obtain shell；
(4) to shell through 1000 DEG C of-1100 DEG C of high temperature sinterings, dewaxing is completed through 1200 DEG C of-1400 DEG C of meltings；
(5) to injecting molten metal in the shell after sintering, pipe valve foundry goods after solidification, is prepared；
(6) pipe valve foundry goods surfaces externally and internally is carried out frosted, polishing.
The silica sol precision casting technique of a kind of pipe valve the most according to claim 1, it is characterised in that: in step (3)
In second time during refractory material, the particle diameter of Mo Laisha is 50 μm.
The silica sol precision casting technique of a kind of pipe valve the most according to claim 1, it is characterised in that: in step (3)
In third time during refractory material, the particle diameter of Mo Laisha is 25 μm.
The silica sol precision casting technique of a kind of pipe valve the most according to claim 1, it is characterised in that: in step (3)
During the 4th upper refractory material, the particle diameter of Mo Laisha is 10 μm.
The silica sol precision casting technique of a kind of pipe valve the most according to claim 1, it is characterised in that: described step
(4) in, the sintering temperature of shell is 1050 DEG C, and smelting temperature is 1250 DEG C.
The silica sol precision casting technique of a kind of pipe valve the most according to claim 1, it is characterised in that: described step
(5) molten metal injected in is aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681892.5A CN106077486A (en) | 2016-08-18 | 2016-08-18 | A kind of silica sol precision casting technique of pipe valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681892.5A CN106077486A (en) | 2016-08-18 | 2016-08-18 | A kind of silica sol precision casting technique of pipe valve |
Publications (1)
| Publication Number | Publication Date |
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| CN106077486A true CN106077486A (en) | 2016-11-09 |
Family
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|---|---|---|---|
| CN201610681892.5A Pending CN106077486A (en) | 2016-08-18 | 2016-08-18 | A kind of silica sol precision casting technique of pipe valve |
Country Status (1)
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| CN (1) | CN106077486A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773122A (en) * | 2019-02-19 | 2019-05-21 | 大成（常熟）机械有限公司 | A kind of production technology and valve castings of the model casting of valve castings |
| CN111299510A (en) * | 2020-03-31 | 2020-06-19 | 中国航发动力股份有限公司 | Preparation method of aluminum alloy casting shell |
Citations (6)
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|---|---|---|---|---|
| CN101143381A (en) * | 2007-10-25 | 2008-03-19 | 大连金煤阀门有限公司 | Titanium alloy fine casting melting method |
| CN101462224A (en) * | 2008-01-16 | 2009-06-24 | 浙江苏泊尔不锈钢制品股份有限公司 | Method for producing stainless steel tap |
| CN101581319A (en) * | 2009-06-18 | 2009-11-18 | 莱芜市泰钢新材料有限责任公司 | Process for manufacturing shell of impeller of electrical pump |
| CN102266905A (en) * | 2011-07-08 | 2011-12-07 | 山东泰山钢铁集团有限公司 | Manufacturing process of part shell with location hole |
| CN104001856A (en) * | 2014-05-30 | 2014-08-27 | 张勇弢 | Preparation method of oxide ceramic composite shell for precision casting of titanium alloy |
| CN104190855A (en) * | 2014-06-19 | 2014-12-10 | 泊头市宏昌机械有限责任公司 | Zircon-sand mullite-sand mold core used for silica sol precision casting and manufacturing method thereof |
-
2016
- 2016-08-18 CN CN201610681892.5A patent/CN106077486A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143381A (en) * | 2007-10-25 | 2008-03-19 | 大连金煤阀门有限公司 | Titanium alloy fine casting melting method |
| CN101462224A (en) * | 2008-01-16 | 2009-06-24 | 浙江苏泊尔不锈钢制品股份有限公司 | Method for producing stainless steel tap |
| CN101581319A (en) * | 2009-06-18 | 2009-11-18 | 莱芜市泰钢新材料有限责任公司 | Process for manufacturing shell of impeller of electrical pump |
| CN102266905A (en) * | 2011-07-08 | 2011-12-07 | 山东泰山钢铁集团有限公司 | Manufacturing process of part shell with location hole |
| CN104001856A (en) * | 2014-05-30 | 2014-08-27 | 张勇弢 | Preparation method of oxide ceramic composite shell for precision casting of titanium alloy |
| CN104190855A (en) * | 2014-06-19 | 2014-12-10 | 泊头市宏昌机械有限责任公司 | Zircon-sand mullite-sand mold core used for silica sol precision casting and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
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| 张春波等: "太阳轮的熔模铸造工艺", 《特种铸造及有色合金》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773122A (en) * | 2019-02-19 | 2019-05-21 | 大成（常熟）机械有限公司 | A kind of production technology and valve castings of the model casting of valve castings |
| CN111299510A (en) * | 2020-03-31 | 2020-06-19 | 中国航发动力股份有限公司 | Preparation method of aluminum alloy casting shell |
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Application publication date: 20161109 |
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