CN108611579A - A kind of manufacturing method of antifriction alloy steel sheath - Google Patents
A kind of manufacturing method of antifriction alloy steel sheath Download PDFInfo
- Publication number
- CN108611579A CN108611579A CN201611133087.5A CN201611133087A CN108611579A CN 108611579 A CN108611579 A CN 108611579A CN 201611133087 A CN201611133087 A CN 201611133087A CN 108611579 A CN108611579 A CN 108611579A
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- CN
- China
- Prior art keywords
- cooling
- melting
- casting
- temperature
- alloy steel
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- 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
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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
- B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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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)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of manufacturing methods applied to the indoor antifriction alloy steel sheath of ball blast.It includes the following steps：A, dispensing；B, melting；C, it pours into a mould；D, cooling：After the casting that step C is obtained is by air-cooled 20~30min of cooling, by 15~25min of cooling by water, 10~15min is then condensed by condensing unit；E, it anneals：It is heated after casting after cooling in step D is carried out polishing processing, keeps the temperature, then heat up, kept the temperature, later quick water cooling；F, it quenches：Cast member is heated to 900~1000 DEG C to quench, is tempered in time after quenching.It has the following effects that:Suitable material pole proportion relation is selected, melting is carried out after extracting vacuum, the uniformity of solution dissolving is good, cast postcooling is gradually cooled down by three kinds of modes, it ensure that the quality of casting, backplate have good hardness, intensity and toughness, can reach good barrier propterty, service life is long, has better economy and comprehensive mechanical performance.
Description
Technical field
The present invention relates to a kind of high manganese wear-resistant steels to roll sheath material, especially a kind of to be applied to the indoor resistance to break-in of ball blast
The manufacturing method of golden steel sheath.
Background technology
Shot-blasting machine is to be sprayed bullet high speed using high-speed rotating impeller head, and bullet is made to have certain kinetic energy, 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 on the roller in the chamber body of shot-blasting machine around workpiece, the bullet of high speed can be by roller over time
It punches, therefore sheath is usually installed on the roller of shot blasting machine chamber in the prior art, existing protective plate type is relatively more, generally
Using rich chromium cast iron or manganese steel material, but in the bullet for being faced with high speed injection, existing sheath makes it due to problem of materials
Intensity it is still not good enough, service life is not grown, therefore will be replaced after a period of use, and cost is thus not only caused
On waste and also delay the duration, influence production efficiency.
Invention content
A kind of the technical problem to be solved in the present invention is to provide wearabilities good, good toughness, shock resistance and with long service life
The manufacturing method of antifriction alloy steel sheath.
In order to solve the above-mentioned technical problem, the manufacturing method of antifriction alloy steel sheath of the invention, includes the following steps：
A, dispensing：By weight percentage, by following chemical composition dispensing, carbon 2.3~2.9%, silicon 1.5~1.8%, manganese 13~
15%, chromium 2. 5~3.5%, nickel 0. 7~0. 9%, titanium 0.7~0.9%, silicon 0.2~0.3%, rare earth 0. 7~1.5%, sulphur 0.02
~0.04%, surplus is iron；
B, melting：By melting stove evacuation so that the pressure in smelting furnace is 1.5~2.5Pa, 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, pouring temperature is 1900~2000 DEG C；
D, cooling：After the casting that step C is obtained is by air-cooled 20~30min of cooling, by 15~25min of cooling by water,
Then 10~15min is condensed by condensing unit；
E, it anneals：1350~1550 DEG C are heated to after casting after cooling in step D is carried out polishing processing, heat preservation 15~20
Min then heats to 1750~1900 DEG C, keeps the temperature 30~40 minutes, later quick water cooling；
F, it quenches：Cast member is heated to 900~1000 DEG C to quench, is tempered in time after quenching, temperature 450
~500 DEG C.
In the step B, when melting, smelting temperature is 1600~1700 DEG C, and smelting time is 30~45 min, goes out furnace temperature
Degree is 1300~1450 DEG C.
In the step C, casting fully solidifies 25~35 min in sandbox after cast.
In the step F, the cool time is 1~2h.
Compared to the prior art, the invention has the advantages that:
Since the present invention has selected suitable material extremely proportion relation, and melting is carried out after extracting vacuum, thus makes its molten
The uniformity of liquid dissolving is good, in addition, cast postcooling is gradually cooled down by three kinds of modes, ensure that the quality of casting, thus makes
The backplate produced has good hardness, intensity and toughness, can reach good barrier propterty, and service life is long, has more preferable
Economy and comprehensive mechanical performance, especially pass through rational treatment process, make it during ball blast by severe impact
When, surface generates rapidly processing hardening, and with martensitic traoformation, case hardness is made to be increased to 180~190 HRC, but also
With extraordinary toughness.
Specific implementation mode
With reference to embodiment, the manufacturing method of the antifriction alloy steel sheath of the present invention is made further specifically
It is bright.
The manufacturing method of the antifriction alloy steel sheath of the present invention, includes the following steps：
A, dispensing：By weight percentage, by following chemical composition dispensing, carbon 2.3~2.9%, silicon 1.5~1.8%, manganese 13~
15%, chromium 2. 5~3.5%, nickel 0. 7~0. 9%, titanium 0.7~0.9%, silicon 0.2~0.3%, rare earth 0. 7~1.5%, sulphur 0.02
~0.04%, surplus is iron；
B, melting：By melting stove evacuation so that the pressure in smelting furnace is 1.5~2.5Pa, and dispensing obtained by step A is put into
Vacuum melting furnace carries out melting；When melting, smelting temperature is 1600~1700 DEG C, and smelting time is 30~45 min, goes out furnace temperature
Degree is 1300~1450 DEG C.
C, it pours into a mould：The solution that step B is obtained is poured into a mould in sandbox, pouring temperature is 1900~2000 DEG C；After cast
Casting fully solidifies 25~35 min in sandbox；
D, cooling：After the casting that step C is obtained is by air-cooled 20~30min of cooling, by 15~25min of cooling by water,
Then 10~15min is condensed by condensing unit；
E, it anneals：1350~1550 DEG C are heated to after casting after cooling in step D is carried out polishing processing, heat preservation 15~20
Min then heats to 1750~1900 DEG C, keeps the temperature 30~40 minutes, later quick water cooling；
F, it quenches：Cast member is heated to 900~1000 DEG C to quench, the cool time is 1~2h, is returned in time after quenching
Fire, temperature are 450~500 DEG C.
Claims (4)
1. a kind of manufacturing method of antifriction alloy steel sheath, it is characterised in that：Include the following steps：
A, dispensing：By weight percentage, by following chemical composition dispensing, carbon 2.3~2.9%, silicon 1.5~1.8%, manganese 13~
15%, chromium 2. 5~3.5%, nickel 0. 7~0. 9%, titanium 0.7~0.9%, silicon 0.2~0.3%, rare earth 0. 7~1.5%, sulphur 0.02
~0.04%, surplus is iron；
B, melting：By melting stove evacuation so that the pressure in smelting furnace is 1.5~2.5Pa, 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, pouring temperature is 1900~2000 DEG C；
D, cooling：After the casting that step C is obtained is by air-cooled 20~30min of cooling, by 15~25min of cooling by water,
Then 10~15min is condensed by condensing unit；
E, it anneals：1350~1550 DEG C are heated to after casting after cooling in step D is carried out polishing processing, heat preservation 15~20
Min then heats to 1750~1900 DEG C, keeps the temperature 30~40 minutes, later quick water cooling；
F, it quenches：Cast member is heated to 900~1000 DEG C to quench, is tempered in time after quenching, temperature 450
~500 DEG C.
2. the manufacturing method of antifriction alloy steel sheath described in accordance with the claim 1, it is characterised in that：In the step B, melting
When, smelting temperature is 1600~1700 DEG C, and smelting time is 30~45 min, and tapping temperature is 1300~1450 DEG C.
3. the manufacturing method of antifriction alloy steel sheath described in accordance with the claim 1, it is characterised in that：In the step C, cast
Casting fully solidifies 25~35 min in sandbox afterwards.
4. the manufacturing method of antifriction alloy steel sheath described in accordance with the claim 1, it is characterised in that：In the step F, quenching
Time is 1~2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611133087.5A CN108611579A (en) | 2016-12-10 | 2016-12-10 | A kind of manufacturing method of antifriction alloy steel sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611133087.5A CN108611579A (en) | 2016-12-10 | 2016-12-10 | A kind of manufacturing method of antifriction alloy steel sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108611579A true CN108611579A (en) | 2018-10-02 |
Family
ID=63657407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611133087.5A Pending CN108611579A (en) | 2016-12-10 | 2016-12-10 | A kind of manufacturing method of antifriction alloy steel sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108611579A (en) |
-
2016
- 2016-12-10 CN CN201611133087.5A patent/CN108611579A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181002 |
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| WD01 | Invention patent application deemed withdrawn after publication |