CN106011427A - Heat treatment technology for heightened flange casting - Google Patents
Heat treatment technology for heightened flange casting Download PDFInfo
- Publication number
- CN106011427A CN106011427A CN201610476520.9A CN201610476520A CN106011427A CN 106011427 A CN106011427 A CN 106011427A CN 201610476520 A CN201610476520 A CN 201610476520A CN 106011427 A CN106011427 A CN 106011427A
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- CN
- China
- Prior art keywords
- flange casting
- flange
- casting
- heightened
- increase
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides a heat treatment technology for a heightened flange casting. The heat treatment technology includes the following operation steps that firstly, a heightened flange casting model is made of a wood or plastic material and placed into a sand groove to be sized, and the reserved sand groove is taken out; secondly, the temperature in a furnace is increased to the temperature between a hastelloy gradual solid phase line and a liquid phase line till a molten state is reached; thirdly, molten iron in the molten state is poured into the reserved sand groove, and a sand layer on the surface of the heightened flange casting is stripped off after cooling is conducted; fourthly, the heightened flange casting treated in the third step is melted; fifthly, the heightened flange casting treated in the fourth step fast enters cold water at the temperature of 5 DEG C to 10 DEG C to be cooled; sixthly, the heightened flange casting treated in the fifth step is tempered during melting, and then heat insulation treatment is conducted; and seventhly, the heightened flange casting treated in the sixth step is taken out and subjected to air cooling, and then surface grinding is conducted. By means of the whole heat treatment technology, the structural strength of the flange casting is greatly improved, and the production technology can be further applied and popularized.
Description
Technical field
The present invention relates to casting process field, be specifically related to a kind of heat treatment increasing flange casting
Technique.
Background technology
Along with present industrialization, informationalized development, people also get over for the pursuit of quality of the life
Coming the highest, in present daily life, fortune is promoted in metal casting the most widely
With.
Casting is a kind of ancient manufacture method, before China can trace back to 6000.Along with
The development of industrial technology, the quality of casting heavy castings directly affects the quality of product, therefore,
It is cast in machinery manufacturing industry and occupies an important position.It is poured into casting by the metal liquid of melting
In type, cooled solidification obtains the manufacturing process of the part of required form and performance.Particularly exist
The aspects such as lathe production, auto parts and components all use more.
Foundry goods is liquid metal part of coagulation forming in die cavity；Forging is usually steel
Ferrum is heated under austenitic state, then utilizes the part that mould makes it be molded with.Increase method
During the cast casting that blue foundry goods typically uses, can frequently result in exist segregation, shrinkage cavity,
The defect such as loose, seriously reduces service life, causes when production application, easily send out
Raw fault, serious also results in casualties and certain property loss.Especially for increasing
High flange components, traditional Welding Structure can affect the structural strength of its entirety.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of heat treatment increasing flange casting
Technique so that increase the structural strength of flange, reduces the shrinkage cavity of flange casting.
For realizing object above, the present invention is achieved by the following technical programs:
A kind of Technology for Heating Processing increasing flange casting, operating procedure is as follows:
1) with wooden or mould prepared material and be fabricated to increase flange casting model, it is placed in sand launder,
Shape, take out reserved sand launder；
2) in-furnace temperature is heated to Kazakhstan formula alloy temperature gradually between solidus and liquidus curve,
To molten state；
3) in reserved sand launder, irrigate the molten iron of molten state, after cooling, peel off and increase flange casting
The layer of sand on part surface；
4) by step 3) flange casting that increases that processes melts down, protects at 930-980 DEG C
Temperature 5-7 minute；
5) by step 4) flange casting that increases that processes rapidly enters in the cold water of 5-10 DEG C and carries out
Cooling；
6) again by step 5) flange casting that increases that processes is placed in 500-670 DEG C melt down
Row tempering, isothermal holding；
7) by step 6) flange casting that increases that processes takes out, air cooling, then carry out surface polishing
?.
Preferably, the gravel placed in described sand launder is the 50-100 mesh sieved.
Preferably, the described mixing that the gravel in sand launder is emergy and chromite sand, and gravel
It is 5:1 with the amount ratio of binding agent.
Preferably, described step 5) in cooling time be 1-2 minute.
Preferably, described step 6) operation before increasing flange casting surface coating one layer of oxidation
Coating.
Preferably, described step 6) in temperature retention time be 3-4 hour.
The invention provides a kind of Technology for Heating Processing increasing flange casting, by technique designs
Carry out gradually in sand launder, due to the good air permeability of sand launder, decrease and increase flange casting
When casting, the generation of internal porosity, emergy and chromite sand and binding agent cooperates
Use, can effectively realize the aeration of gravel, moreover it is possible to realize the mould after compacting and have necessarily
Structural strength, prevent the molten iron of molten state from impacting, cause the mould of gravel cave in and become
Shape, the cold water quickly cooling carried out so that high flange cast(ing) surface wearability increases.Whole technique can
Industrially carry out further genralrlization application.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below will knot
Close embodiments of the invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Describe.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
Embodiment 1:
The present embodiment provides a kind of Technology for Heating Processing increasing flange casting, and operating procedure is as follows:
1) with wooden or mould prepared material and be fabricated to increase flange casting model, it is placed in sand launder,
Shape, take out reserved sand launder；
2) in-furnace temperature is heated to Kazakhstan formula alloy temperature gradually between solidus and liquidus curve,
To molten state；
3) in reserved sand launder, irrigate the molten iron of molten state, after cooling, peel off and increase flange casting
The layer of sand on part surface；
4) by step 3) flange casting that increases that processes melts down, protects at 930-980 DEG C
Temperature 5-7 minute；
5) by step 4) flange casting that increases that processes rapidly enters in the cold water of 5-10 DEG C and carries out
Cooling；
6) again by step 5) flange casting that increases that processes is placed in 500-670 DEG C melt down
Row tempering, isothermal holding；
7) by step 6) flange casting that increases that processes takes out, air cooling, then carry out surface polishing
?.
Embodiment 2:
The present embodiment provides a kind of Technology for Heating Processing increasing flange casting, and operating procedure is as follows:
1) with wooden or mould prepared material and be fabricated to increase flange casting model, it is placed in sand launder,
Shape, take out reserved sand launder；
2) in-furnace temperature is heated to Kazakhstan formula alloy temperature gradually between solidus and liquidus curve,
To molten state；
3) in reserved sand launder, irrigate the molten iron of molten state, after cooling, peel off and increase flange casting
The layer of sand on part surface；
4) by step 3) flange casting that increases that processes melts down, protects at 930-980 DEG C
Temperature 5-7 minute；
5) by step 4) flange casting that increases that processes rapidly enters in the cold water of 5-10 DEG C and carries out
Cooling；
6) again by step 5) flange casting that increases that processes is placed in 500-670 DEG C melt down
Row tempering, isothermal holding；
7) by step 6) flange casting that increases that processes takes out, air cooling, then carry out surface polishing
?.
Step 5) in cooling time be 1-2 minute.
Step 6) operation before increasing flange casting surface coating one layer of oxidation coating.
Step 6) in temperature retention time be 3-4 hour.
Embodiment 3:
The present embodiment provides a kind of Technology for Heating Processing increasing flange casting, and operating procedure is as follows:
1) with wooden or mould prepared material and be fabricated to increase flange casting model, it is placed in sand launder,
Shape, take out reserved sand launder；
2) in-furnace temperature is heated to Kazakhstan formula alloy temperature gradually between solidus and liquidus curve,
To molten state；
3) in reserved sand launder, irrigate the molten iron of molten state, after cooling, peel off and increase flange casting
The layer of sand on part surface；
4) by step 3) flange casting that increases that processes melts down, protects at 930-980 DEG C
Temperature 5-7 minute；
5) by step 4) flange casting that increases that processes rapidly enters in the cold water of 5-10 DEG C and carries out
Cooling；
6) again by step 5) flange casting that increases that processes is placed in 500-670 DEG C melt down
Row tempering, isothermal holding；
7) by step 6) flange casting that increases that processes takes out, air cooling, then carry out surface polishing
?.
The gravel placed in sand launder is the 50-100 mesh sieved.
Gravel in sand launder is the mixing of emergy and chromite sand, and the consumption of gravel and binding agent
Ratio is 5:1.
Step 6) operation before increasing flange casting surface coating one layer of oxidation coating.
Embodiment 4:
The present embodiment provides a kind of Technology for Heating Processing increasing flange casting, and operating procedure is as follows:
1) with wooden or mould prepared material and be fabricated to increase flange casting model, it is placed in sand launder,
Shape, take out reserved sand launder；
2) in-furnace temperature is heated to Kazakhstan formula alloy temperature gradually between solidus and liquidus curve,
To molten state；
3) in reserved sand launder, irrigate the molten iron of molten state, after cooling, peel off and increase flange casting
The layer of sand on part surface；
4) by step 3) flange casting that increases that processes melts down, protects at 930-980 DEG C
Temperature 5-7 minute；
5) by step 4) flange casting that increases that processes rapidly enters in the cold water of 5-10 DEG C and carries out
Cooling；
6) again by step 5) flange casting that increases that processes is placed in 500-670 DEG C melt down
Row tempering, isothermal holding；
7) by step 6) flange casting that increases that processes takes out, air cooling, then carry out surface polishing
?.
The gravel placed in sand launder is the 50-100 mesh sieved.
Gravel in sand launder is the mixing of emergy and chromite sand, and the consumption of gravel and binding agent
Ratio is 5:1.
Step 5) in cooling time be 1-2 minute.
Step 6) operation before increasing flange casting surface coating one layer of oxidation coating.
Step 6) in temperature retention time be 3-4 hour.
Flange is increased according to existing
Above example only in order to technical scheme to be described, is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, those of ordinary skill in the art
It is understood that the technical scheme described in foregoing embodiments still can be modified by it,
Or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, not
The essence making appropriate technical solution departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. the Technology for Heating Processing increasing flange casting, it is characterised in that operating procedure is as follows:
1) with wooden or mould prepared material and be fabricated to increase flange casting model, it is placed in sand launder,
Shape, take out reserved sand launder；
2) in-furnace temperature is heated to Kazakhstan formula alloy temperature gradually between solidus and liquidus curve,
To molten state；
3) in reserved sand launder, irrigate the molten iron of molten state, after cooling, peel off and increase flange casting
The layer of sand on part surface；
4) by step 3) flange casting that increases that processes melts down, protects at 930-980 DEG C
Temperature 5-7 minute；
5) by step 4) flange casting that increases that processes rapidly enters in the cold water of 5-10 DEG C and carries out
Cooling；
6) again by step 5) flange casting that increases that processes is placed in 500-670 DEG C melt down
Row tempering, isothermal holding；
7) by step 6) flange casting that increases that processes takes out, air cooling, then carry out surface polishing
?.
Increase the Technology for Heating Processing of flange casting the most as claimed in claim 1, it is characterised in that
The gravel placed in described sand launder is the 50-100 mesh sieved.
Increase the Technology for Heating Processing of flange casting the most as claimed in claim 1, it is characterised in that
The described mixing that the gravel in sand launder is emergy and chromite sand, and gravel and binding agent
Amount ratio is 5:1.
Increase the Technology for Heating Processing of flange casting the most as claimed in claim 1, it is characterised in that
Described step 5) in cooling time be 1-2 minute.
Increase the Technology for Heating Processing of flange casting the most as claimed in claim 1, it is characterised in that
Described step 6) operation before increasing flange casting surface coating one layer of oxidation coating.
Increase the Technology for Heating Processing of flange casting the most as claimed in claim 1, it is characterised in that
Described step 6) in temperature retention time be 3-4 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476520.9A CN106011427A (en) | 2016-06-23 | 2016-06-23 | Heat treatment technology for heightened flange casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476520.9A CN106011427A (en) | 2016-06-23 | 2016-06-23 | Heat treatment technology for heightened flange casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106011427A true CN106011427A (en) | 2016-10-12 |
Family
ID=57083647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610476520.9A Pending CN106011427A (en) | 2016-06-23 | 2016-06-23 | Heat treatment technology for heightened flange casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106011427A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368781A (en) * | 2014-08-29 | 2015-02-25 | 宿松恒达电气配件有限公司 | High-pressure flange centrifugal casting technology |
| CN104785744A (en) * | 2015-04-11 | 2015-07-22 | 中山市鸿程科研技术服务有限公司 | A High Pressure Flange Centrifugal Casting Process |
| CN105695848A (en) * | 2015-11-29 | 2016-06-22 | 郑臣钏 | Flange casting process |
| CN105689653A (en) * | 2016-01-19 | 2016-06-22 | 大丰市洪联铸钢有限责任公司 | Casting process for high-temperature water-pressure-resisting combined flange |
-
2016
- 2016-06-23 CN CN201610476520.9A patent/CN106011427A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368781A (en) * | 2014-08-29 | 2015-02-25 | 宿松恒达电气配件有限公司 | High-pressure flange centrifugal casting technology |
| CN104785744A (en) * | 2015-04-11 | 2015-07-22 | 中山市鸿程科研技术服务有限公司 | A High Pressure Flange Centrifugal Casting Process |
| CN105695848A (en) * | 2015-11-29 | 2016-06-22 | 郑臣钏 | Flange casting process |
| CN105689653A (en) * | 2016-01-19 | 2016-06-22 | 大丰市洪联铸钢有限责任公司 | Casting process for high-temperature water-pressure-resisting combined flange |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |