CN112570687A - Special alloy composite casting process - Google Patents
Special alloy composite casting process Download PDFInfo
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- CN112570687A CN112570687A CN201910936666.0A CN201910936666A CN112570687A CN 112570687 A CN112570687 A CN 112570687A CN 201910936666 A CN201910936666 A CN 201910936666A CN 112570687 A CN112570687 A CN 112570687A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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Abstract
The invention discloses a special alloy composite casting process, which comprises the following steps: the method comprises the following steps: designing a casting drawing according to the drawing requirements of a product; step two: manufacturing a mould, and manufacturing a casting sand mould according to the structure of a product; step three: coating alloy, namely uniformly coating the alloy at fixed points on the inner surface of the die; step four: igniting the alloy, igniting the coated alloy, and solidifying the alloy on the inner surface of the die; step five: closing the die, namely closing the upper die and the lower die to form a die cavity required by casting; casting pouring, namely pouring molten steel according to a casting process; step seven, natural solidification; and step eight, forming the casting, taking out the casting, and finishing casting. The process compounds a 5mm-8mm high-wear-resistance and heat-resistance alloy layer on the guide working surface, the body adopts low alloy steel, the performance advantages of the two materials are fully exerted, the working surface has high-temperature wear resistance, the body has good strength and toughness, the body is ensured not to be broken in use, and the service life of the body is 3 times-5 times that of the nickel-chromium alloy guide.
Description
Technical Field
The invention relates to the field of composite casting, in particular to a special alloy composite casting process.
Background
The alloy is a solid product with metal property obtained by mixing and melting one metal and another metal or a plurality of metals or nonmetals, cooling and solidifying. A metallic material having metallic characteristics formed by alloying (melting, mechanical alloying, sintering, vapor deposition, etc.) two or more metallic elements or by adding other non-metallic elements on a metallic basis is often called an alloy. The alloy may contain only one metal element, such as steel.
In the existing alloy casting process, one metal and another metal or a plurality of metals or nonmetals are mixed and melted to obtain a solid product, so that the overall performance of the product is improved, the performance of each part is the same, but different parts of the product often need different performances, and the method not only can cause the waste of resources, but also cannot exert the performance advantages of various materials.
Disclosure of Invention
The invention aims to solve the problems and provide a special alloy composite casting process.
The invention realizes the purpose through the following technical scheme:
a special alloy composite casting process comprises the following steps:
the method comprises the following steps: designing a casting drawing according to the drawing requirements of a product;
step two: manufacturing a mould, and manufacturing a casting sand mould according to the structure of a product;
step three: coating alloy, namely uniformly coating the alloy at fixed points on the inner surface of the die;
step four: igniting the alloy, igniting the coated alloy, and solidifying the alloy on the inner surface of the die;
step five: closing the die, namely closing the upper die and the lower die to form a die cavity required by casting;
casting pouring, namely pouring molten steel according to a casting process;
step seven, natural solidification;
and step eight, forming the casting, taking out the casting, and finishing casting.
Preferably, the inner mold material in the second step is quartz sand.
Preferably, the thickness of the coating alloy in the third step is 5mm-8mm, and the alloy contains alcohol.
Preferably, the material of the coating alloy in the third step is one or more of nickel, chromium, molybdenum and tungsten.
Preferably, the combustion time in the fourth step is 2 minutes.
Preferably, the temperature of the molten steel poured in the sixth step is 1560-1640 ℃, and the molten steel is low alloy steel.
Preferably, the time for natural solidification in the seventh step is 2 hours to 3 hours.
The invention has the following advantages:
the process compounds a 5mm-8mm high-wear-resistance and heat-resistance alloy layer on the guide working surface, the body adopts low alloy steel, the performance advantages of the two materials are fully exerted, the working surface has high-temperature wear resistance, the body has good strength and toughness, the fracture is avoided in use, the service life of the guide is 3-5 times that of a nickel-chromium alloy guide, and is more than 20 times that of a common cast iron guide.
Detailed Description
The present invention will be further described with reference to specific examples, but the present invention is not limited to these examples.
Example 1
The method comprises the following steps: designing a casting drawing according to the drawing requirements of a product;
step two: manufacturing a mould, namely manufacturing a casting sand mould by adopting quartz sand according to the structure of a product;
step three: coating alloy, namely uniformly coating 5mm thick composite chromium carbide type alloy containing alcohol on the inner surface of the die at fixed points;
step four: igniting the alloy, igniting the coated alloy, and burning for 2 minutes to solidify and solidify the alloy on the inner surface of the die;
step five: closing the die, namely closing the upper die and the lower die to form a die cavity required by casting;
casting, namely pouring 40Cr low-alloy steel liquid at 1560 ℃ according to a casting process;
step seven, naturally solidifying for 2 hours;
and step eight, forming the casting, taking out the casting, and finishing casting.
Example 2
The method comprises the following steps: designing a casting drawing according to the drawing requirements of a product;
step two: manufacturing a mould, namely manufacturing a casting sand mould by adopting quartz sand according to the structure of a product;
step three: coating alloy, namely uniformly coating the inner surface of the die with 8mm thick composite tungsten carbide type alloy containing alcohol at fixed points;
step four: igniting the alloy, igniting the coated alloy, and burning for 2 minutes to solidify and solidify the alloy on the inner surface of the die;
step five: closing the die, namely closing the upper die and the lower die to form a die cavity required by casting;
casting, namely pouring 40CrMo low alloy steel liquid at 1640 ℃ according to a casting process;
step seven, naturally solidifying for 3 hours;
and step eight, forming the casting, taking out the casting, and finishing casting.
Example 3
A special alloy composite casting process comprises the following steps:
the method comprises the following steps: designing a casting drawing according to the drawing requirements of a product;
step two: manufacturing a mould, namely manufacturing a casting sand mould by adopting quartz sand according to the structure of a product;
step three: coating alloy, namely uniformly coating 5 mm-thick composite tungsten carbide type alloy containing alcohol on the inner surface of the die at fixed points;
step four: igniting the alloy, igniting the coated alloy, and burning for 2 minutes to solidify and solidify the alloy on the inner surface of the die;
step five: closing the die, namely closing the upper die and the lower die to form a die cavity required by casting;
casting, namely pouring 40CrMo low-alloy steel water at 1560 ℃ according to a casting process;
step seven, naturally solidifying for 2 hours;
and step eight, forming the casting, taking out the casting, and finishing casting.
Example 4
The method comprises the following steps: designing a casting drawing according to the drawing requirements of a product;
step two: manufacturing a mould, namely manufacturing a casting sand mould by adopting quartz sand according to the structure of a product;
step three: coating alloy, namely uniformly coating the inner surface of the die with 8mm thick composite chromium carbide type alloy containing alcohol at fixed points;
step four: igniting the alloy, igniting the coated alloy, and burning for 2 minutes to solidify and solidify the alloy on the inner surface of the die;
step five: closing the die, namely closing the upper die and the lower die to form a die cavity required by casting;
casting, namely pouring 40Cr low-alloy steel liquid at 1640 ℃ according to a casting process;
step seven, naturally solidifying for 3 hours;
and step eight, forming the casting, taking out the casting, and finishing casting.
Wherein, the composite chromium carbide type alloy: the working surface has the hardness of HRC55-63, and the carbide is M7C3 type, so that the high-temperature wear-resistant steel has good high-temperature wear resistance.
Wherein, the composite tungsten carbide type alloy: the hardness of the working surface is HRC67-72, the hard phase is tungsten carbide, and the integral hard alloy guide plate can be replaced, so that the use cost is greatly reduced; the alloy layer of the composite metal guide plate is metallurgically bonded with the body, and the shear strength of the bonding layer is 470-480MPa and is the same as that of the material of the body, so that the alloy layer is ensured not to be peeled off in the using process.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. A special alloy composite casting process is characterized in that: the method comprises the following steps:
the method comprises the following steps: designing a casting drawing according to the drawing requirements of a product;
step two: manufacturing a mould, and manufacturing a casting sand mould according to the structure of a product;
step three: coating alloy, namely uniformly coating the alloy at fixed points on the inner surface of the die;
step four: igniting the alloy, igniting the coated alloy, and solidifying the alloy on the inner surface of the die;
step five: closing the die, namely closing the upper die and the lower die to form a die cavity required by casting;
casting pouring, namely pouring molten steel according to a casting process;
step seven, natural solidification;
and step eight, forming the casting, taking out the casting, and finishing casting.
2. The special alloy composite casting process according to claim 1, wherein: and in the second step, the inner mould material adopts quartz sand.
3. The special alloy composite casting process according to claim 1, wherein: the thickness of the coating alloy in the third step is 5mm-8mm, and the alloy contains alcohol.
4. The special alloy composite casting process according to claim 1, wherein: the alloy coating material in the third step is one or more of nickel, chromium, molybdenum and tungsten.
5. The special alloy composite casting process according to claim 1, wherein: the combustion time in the fourth step was 2 minutes.
6. The special alloy composite casting process according to claim 1, wherein: and in the sixth step, the temperature of the poured molten steel is 1560-1640 ℃, and the molten steel is low alloy steel.
7. The special alloy composite casting process according to claim 1, wherein: the natural solidification time in the seventh step is 2-3 hours.
Priority Applications (1)
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| CN201910936666.0A CN112570687A (en) | 2019-09-29 | 2019-09-29 | Special alloy composite casting process |
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| CN201910936666.0A CN112570687A (en) | 2019-09-29 | 2019-09-29 | Special alloy composite casting process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114011887A (en) * | 2021-10-18 | 2022-02-08 | 马鞍山市方圆材料工程股份有限公司 | Outlet guide for lost foam composite casting and production process |
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| CN101182624A (en) * | 2006-11-13 | 2008-05-21 | 河南科技大学 | Tisco manganese steel casting surface alloying process method |
| CN101195156A (en) * | 2007-12-04 | 2008-06-11 | 北京工业大学 | Process for producing casting and seeping foreplate of rolling mill |
| CN104152891A (en) * | 2014-08-20 | 2014-11-19 | 太原理工大学 | Method for rapidly forming metallurgical alloy layer on magnesium alloy surface |
| CN105081285A (en) * | 2015-09-29 | 2015-11-25 | 河南科技大学 | Cast-infiltration method for improving surface corrosion resistance of casting |
| US20160008877A1 (en) * | 2014-07-14 | 2016-01-14 | Georg Fischer Gmbh | Composite casting part |
| CN109454202A (en) * | 2018-12-12 | 2019-03-12 | 河南科技大学 | A kind of casting penetration enhancer, wear-resisting steel casting and preparation method thereof |
| CN110090917A (en) * | 2019-04-15 | 2019-08-06 | 河北科技大学 | A kind of iron base composite material method for casting and seeping coating, preparation method and casting impregnation coating using its preparation |
-
2019
- 2019-09-29 CN CN201910936666.0A patent/CN112570687A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1351910A (en) * | 2000-11-09 | 2002-06-05 | 毛立仁 | Composite alloy material guide and guard board and its producing method |
| CN1483536A (en) * | 2003-08-12 | 2004-03-24 | 陈振华 | Technology for producing wear-resisting compound material |
| CN101182624A (en) * | 2006-11-13 | 2008-05-21 | 河南科技大学 | Tisco manganese steel casting surface alloying process method |
| CN101195156A (en) * | 2007-12-04 | 2008-06-11 | 北京工业大学 | Process for producing casting and seeping foreplate of rolling mill |
| US20160008877A1 (en) * | 2014-07-14 | 2016-01-14 | Georg Fischer Gmbh | Composite casting part |
| CN104152891A (en) * | 2014-08-20 | 2014-11-19 | 太原理工大学 | Method for rapidly forming metallurgical alloy layer on magnesium alloy surface |
| CN105081285A (en) * | 2015-09-29 | 2015-11-25 | 河南科技大学 | Cast-infiltration method for improving surface corrosion resistance of casting |
| CN109454202A (en) * | 2018-12-12 | 2019-03-12 | 河南科技大学 | A kind of casting penetration enhancer, wear-resisting steel casting and preparation method thereof |
| CN110090917A (en) * | 2019-04-15 | 2019-08-06 | 河北科技大学 | A kind of iron base composite material method for casting and seeping coating, preparation method and casting impregnation coating using its preparation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114011887A (en) * | 2021-10-18 | 2022-02-08 | 马鞍山市方圆材料工程股份有限公司 | Outlet guide for lost foam composite casting and production process |
| CN114011887B (en) * | 2021-10-18 | 2023-01-17 | 马鞍山市方圆材料工程股份有限公司 | Outlet guide for lost foam composite casting and production process |
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