CN108220757A - A kind of manufacturing method of high-chromium cast iron alloy - Google Patents
A kind of manufacturing method of high-chromium cast iron alloy Download PDFInfo
- Publication number
- CN108220757A CN108220757A CN201611133035.8A CN201611133035A CN108220757A CN 108220757 A CN108220757 A CN 108220757A CN 201611133035 A CN201611133035 A CN 201611133035A CN 108220757 A CN108220757 A CN 108220757A
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- CN
- China
- Prior art keywords
- melting
- chromium
- iron alloy
- cast iron
- manufacturing
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Classifications
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- 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
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of manufacturing methods of high-chromium cast iron alloy.It includes the following steps：A, dispensing；B, melting：By melting stove evacuation, dispensing obtained by step A is put into vacuum melting furnace and carries out melting；C, it pours into a mould；D, it cools down：By the casting that step C is obtained by after air-cooled, by cooling by water, then being condensed by condensing unit；E, it anneals；F, it quenches.It has the advantages that:Due to the content for rationally defining chromium and the specific ratio defined between chromium and carbon, at the same time, the other materials ingredient of proper ratio is selected, and carry out melting after extracting vacuum, thus make the uniformity that its solution dissolves good, in addition, cast postcooling is gradually cooled down by three kinds of modes, it ensure that the quality of casting, thus the backplate produced has unusual hardness, intensity, more importantly also there is good toughness, make it have the performances such as wear-resisting, shock resistance, meet being required to mechanical performance during ball blast.
Description
Technical field
The present invention relates to a kind of manufacturing method of shot blast room backplate, particularly a kind of manufacturer of high-chromium cast iron alloy
Method.
Background technology
Shot-blasting machine is to be sprayed bullet at a high speed using high-speed rotating impeller head, bullet is made to have certain kinetic energy, at a high speed
The bullet of linear motion directly impacts on the surface of the workpiece, and to remove the rusty stain of workpiece surface, but shot-blasting machine is carrying out ball blast
During have bullet and beaten in the chamber body of shot-blasting machine around workpiece, the bullet of high speed can punch chamber body over time, because
This is usually laid with protective plate in shot blasting machine chamber body in the prior art, and existing protective plate type is relatively more, generally using Gao Ge
Cast iron or manganese steel plate, but in the bullet for being faced with injection at a high speed, existing backplate makes its intensity still due to problem of materials
Not good enough, service life is not grown, therefore will be replaced after a period of use, thus not only cause waste in cost and
And delay the duration, influence production efficiency.
Invention content
Its is reasonable in design the technical problem to be solved in the present invention is to provide a kind of, wear-resisting, shock resistance, at low cost and make
With the high-chromium cast iron alloy backplate of long lifespan.
In order to solve the above-mentioned technical problem, high-chromium cast iron alloy backplate of the invention, includes the following steps：
A, dispensing：By weight percentage, by following chemical composition dispensing, carbon 8~13%, silicon 0. 30~0. 50%, manganese 0.6~
0.8%, chromium 29~30%, nickel 3~6%, molybdenum 5~8%, titanium 0.25~0.35%, silicon 3~6%, phosphorus 0.04~0.06%, surplus is iron；
B, melting：By melting stove evacuation so that the pressure in smelting furnace is 1.6~2.8Pa, and dispensing obtained by step A is put into
Vacuum melting furnace carries out melting；
C, it pours into a mould：The solution that step B is obtained is poured into a mould in sandbox, and pouring temperature is 1350~1450 DEG C；
D, it cools down：By the casting that step C is obtained by it is air-cooled cooling 27~32 min after, pass through cooling by water 27~39
Then min condenses 20~28 min by condensing unit；
E, it anneals：1000~1200 DEG C are heated to after casting after cooling in step D is carried out polishing processing, heat preservation 8~15
Min, the then natural cooling in wind；
F, it quenches：Cast member is heated to 780~830 DEG C to quench, is tempered in time after quenching, temperature 300
~320 DEG C.
In the step B, during melting, smelting temperature is 1700~1900 DEG C, and smelting time is 35~50 min, goes out furnace temperature
Spend is 1500~1650 DEG C.
In the step C, casting fully solidifies 25~35 min in sandbox after cast.
In the step F, the cool time is 7~8h.
Compared to the prior art, the invention has the advantages that:
Due to the content for rationally defining chromium and the specific ratio defined between chromium and carbon, at the same time, it is suitable to have selected
The other materials ingredient of ratio, and melting is carried out after extracting vacuum, thus make the uniformity that its solution dissolves good, in addition, pouring
Note postcooling gradually cooled down by three kinds of modes, ensure that the quality of casting, the backplate thus produced with unusual hardness,
Intensity, it is often more important that also with good toughness, make it have the performances such as wear-resisting, shock resistance, meet ball blast in the process to machine
Being required for tool performance, extends service life, in addition, manufacturing method of the present invention, makes to melt between various composition
Conjunction property is good, improves alloy structure performance, and then manufactured product is made to have reached wear-resisting, shock resistance.
Specific embodiment
With reference to embodiment, the manufacturing method of the high-chromium cast iron alloy of the present invention is made further specifically
It is bright.
The manufacturing method of the high-chromium cast iron alloy of the present invention, includes the following steps：
A, dispensing：By weight percentage, by following chemical composition dispensing, carbon 8~13%, silicon 0. 30~0. 50%, manganese 0.6~
0.8%, chromium 29~30%, nickel 3~6%, molybdenum 5~8%, titanium 0.25~0.35%, silicon 3~6%, phosphorus 0.04~0.06%, surplus is iron；
B, melting：By melting stove evacuation so that the pressure in smelting furnace is 1.6~2.8Pa, and dispensing obtained by step A is put into
Vacuum melting furnace carries out melting；During melting, smelting temperature is 1700~1900 DEG C, and smelting time is 35~50 min, goes out furnace temperature
Spend is 1500~1650 DEG C；
C, it pours into a mould：The solution that step B is obtained is poured into a mould in sandbox, and pouring temperature is 1350~1450 DEG C；After cast
Casting fully solidifies 25~35 min in sandbox；
D, it cools down：By the casting that step C is obtained by it is air-cooled cooling 27~32 min after, pass through cooling by water 27~39
Then min condenses 20~28 min by condensing unit；
E, it anneals：1000~1200 DEG C are heated to after casting after cooling in step D is carried out polishing processing, heat preservation 8~15
Min, the then natural cooling in wind；
F, it quenches：Cast member is heated to 780~830 DEG C to quench, the cool time is 7~8h, is returned in time after quenching
Fire, temperature are 300~320 DEG C.
Claims (4)
1. a kind of manufacturing method of high-chromium cast iron alloy, it is characterised in that：Include the following steps：
A, dispensing：By weight percentage, by following chemical composition dispensing, carbon 8~13%, silicon 0. 30~0. 50%, manganese 0.6~
0.8%, chromium 29~30%, nickel 3~6%, molybdenum 5~8%, titanium 0.25~0.35%, silicon 3~6%, phosphorus 0.04~0.06%, surplus is iron；
B, melting：By melting stove evacuation so that the pressure in smelting furnace is 1.6~2.8Pa, and dispensing obtained by step A is put into
Vacuum melting furnace carries out melting；
C, it pours into a mould：The solution that step B is obtained is poured into a mould in sandbox, and pouring temperature is 1350~1450 DEG C；
D, it cools down：By the casting that step C is obtained by it is air-cooled cooling 27~32 min after, pass through cooling by water 27~39
Then min condenses 20~28 min by condensing unit；
E, it anneals：1000~1200 DEG C are heated to after casting after cooling in step D is carried out polishing processing, heat preservation 8~15
Min, the then natural cooling in wind；
F, it quenches：Cast member is heated to 780~830 DEG C to quench, is tempered in time after quenching, temperature 300
~320 DEG C.
2. the manufacturing method of high-chromium cast iron alloy described in accordance with the claim 1, it is characterised in that：In the step B, melting
When, smelting temperature is 1700~1900 DEG C, and smelting time is 35~50 min, and tapping temperature is 1500~1650 DEG C.
3. the manufacturing method of high-chromium cast iron alloy described in accordance with the claim 1, it is characterised in that：In the step C, after cast
Casting fully solidifies 25~35 min in sandbox.
4. the manufacturing method of high-chromium cast iron alloy described in accordance with the claim 1, it is characterised in that：In the step F, during quenching
Between be 7~8h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611133035.8A CN108220757A (en) | 2016-12-10 | 2016-12-10 | A kind of manufacturing method of high-chromium cast iron alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611133035.8A CN108220757A (en) | 2016-12-10 | 2016-12-10 | A kind of manufacturing method of high-chromium cast iron alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108220757A true CN108220757A (en) | 2018-06-29 |
Family
ID=62637806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611133035.8A Pending CN108220757A (en) | 2016-12-10 | 2016-12-10 | A kind of manufacturing method of high-chromium cast iron alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108220757A (en) |
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2016
- 2016-12-10 CN CN201611133035.8A patent/CN108220757A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180629 |