CN106862442A - A kind of casting without material head shaft forgings-roll manufacturing process - Google Patents
A kind of casting without material head shaft forgings-roll manufacturing process Download PDFInfo
- Publication number
- CN106862442A CN106862442A CN201611254051.2A CN201611254051A CN106862442A CN 106862442 A CN106862442 A CN 106862442A CN 201611254051 A CN201611254051 A CN 201611254051A CN 106862442 A CN106862442 A CN 106862442A
- Authority
- CN
- China
- Prior art keywords
- casting
- mould
- bar
- shaft forgings
- material head
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
-
- 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
-
- 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
Abstract
The invention discloses a kind of casting without material head shaft forgings-roll manufacturing process, feature is to make casting mould, by in casting mould embedment sand mould box, form casting mold, and cast gate is set in sand mould box, rising head, open gate groove, mo(u)ld venting, then molten steel is injected in casting mould, cast is cooled down after terminating, until the center portion temperature of casting is 1100 DEG C~1200 DEG C, surface temperature is 750 DEG C~800 DEG C, then knockout, take out the casting bar that two ends are truncated cone-shaped, finally casting bar is put on cross wedge rolling machine at once and is rolled, it is rolling without material head shaft forgings under conditions of the contraction percentage of area of rolled piece is controlled for 75%~95%；Advantage is the method working shaft-like part due to being combined with cross wedge rolling using casting so that casting bar can preferably avoid the generation of the recessed heart in end in Regularity of Workpiece of Cross Wedge Rolling, further increasing the stock utilization of product, and the quality of rolled piece is good.
Description
Technical field
The present invention relates to the processing of shaft forgings, more particularly to a kind of casting without material head shaft forgings-roll manufacturing process.
Background technology
Regularity of Workpiece of Cross Wedge Rolling be shaft forgings shaping new technology, with produce it is efficient the features such as.But due to Regularity of Workpiece of Cross Wedge Rolling
Process is metallic radial compression and axially extending deformation process, and coating metal flows than center portion metal axial during rolling shaft forgings
It is fast, end is produced the larger recessed heart, cause the axial workpiece of roll forming to produce material head, it is necessary to be set by mould
Cutting knife removes material removal head, and the utilization rate of material is reduced to a certain extent.And in order to avoid shaft forgings produce material head, the elder generation also having
Bar is heated, end is then processed tapered, but this needs auxiliary equipment pre-cut end, and to eliminating shaft forgings end
The effect of the recessed heart in portion is not very good.Additionally, at present bar before Regularity of Workpiece of Cross Wedge Rolling is carried out, it is necessary to by twice or thrice plus
Heat, institute's power consumption is big, it is impossible to the need for meeting energy-saving and emission-reduction.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of stock utilization high, good product quality and energy-saving
Casting without material head shaft forgings-roll manufacturing process.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of casting without material head shaft forgings-roll into shape
Method, including step in detail below：
（1）, make two ends be truncated cone-shaped and internal diameter be 30~200mm casting mould；
（2）, casting mould imbedded sand mould box, and will be tamped with molding sand around casting mould, compressed, refill resin
Sand, forms casting mold；
（3）, in sand mould box set cast gate, rising head, open gate groove, mo(u)ld venting；
（4）, molten steel injected in casting mould, the pouring temperature of molten steel is 1300 DEG C~1500 DEG C, the duration of pouring is 20~
25s, cast terminate after cool down, until the center portion temperature of casting be 1100 DEG C~1200 DEG C, surface temperature be 750 DEG C~800 DEG C,
Then knockout, takes out the casting bar that two ends are truncated cone-shaped, a diameter of 30~200mm；
（5）, casting bar be put on cross wedge rolling machine at once roll, in the bar that the contraction percentage of area for controlling rolled piece is 75%~95%
It is rolling without material head shaft forgings under part.
Compared with prior art, it is an advantage of the invention that：
（1）, due to using the method working shaft-like part that is combined with cross wedge rolling of casting, casting bar is from the heart when being cast by control
The two ends of casting bar and are cast as truncated cone-shaped by portion to the thermograde on surface so that casting bar in Regularity of Workpiece of Cross Wedge Rolling,
The generation of the recessed heart in end can be preferably avoided, the stock utilization of product is further increasing, stock utilization can reach 98%
More than.
（2）, in cross wedge rolling, it is 75%~95% to control the contraction percentage of area of rolled piece, under cross wedge rolling large area reduction
Rolling, can smash casting dendrite so that crystal grain refinement, obtain high-quality rolled piece.
（3）, by by the direct cast form of molten steel, and temperature that band is had a surplus casting bar Direct Rolling, obtain shaft forgings,
The technological process of shaft forgings shaping is reduced, the production efficiency of shaft forgings is improve, and avoids reheating, reach energy-conservation drop
The purpose of consumption.
Specific embodiment
The present invention is described in further detail with reference to embodiments.
Embodiment one：A kind of casting without material head shaft forgings-roll manufacturing process, including step in detail below：
（1）, make two ends to be truncated cone-shaped and internal diameter be the casting mould of 50mm；
（2）, casting mould imbedded sand mould box, and will be tamped with molding sand around casting mould, compressed, refill resin
Sand, forms casting mold；
（3）, in sand mould box set cast gate, rising head, open gate groove, mo(u)ld venting；
（4）, by material for the molten steel injection casting mould of 45# in, the pouring temperature of molten steel is 1400 DEG C, and the duration of pouring is 20s,
Cast is cooled down after terminating, until the center portion temperature of casting be 1100 DEG C, surface temperature be 800 DEG C, then knockout takes out two ends equal
It is truncated cone-shaped and the casting bar of a diameter of 50mm；
（5）, by casting bar at once be put on cross wedge rolling machine roll, control rolled piece the contraction percentage of area be 75% under conditions of
Rolling material is 45# steel without material head shaft forgings.
Embodiment two：A kind of casting without material head shaft forgings-roll manufacturing process, including step in detail below：
（1）, make two ends to be truncated cone-shaped and internal diameter be the casting mould of 100mm；
（2）, casting mould imbedded sand mould box, and will be tamped with molding sand around casting mould, compressed, refill resin
Sand, forms casting mold；
（3）, in sand mould box set cast gate, rising head, open gate groove, mo(u)ld venting；
（4）, by material for the molten steel injection casting mould of 42CrMo in, the pouring temperature of molten steel is 1500 DEG C, and the duration of pouring is
25s, cast is cooled down after terminating, until the center portion temperature of casting be 1200 DEG C, surface temperature be 800 DEG C, then knockout takes out two
End is the casting bar of truncated cone-shaped and a diameter of 100mm；
（5）, by casting bar at once be put on cross wedge rolling machine roll, control rolled piece the contraction percentage of area be 80% under conditions of
Rolling material is 42CrMo without material head shaft forgings.
Embodiment three：A kind of casting without material head shaft forgings-roll manufacturing process, including step in detail below：
（1）, make two ends to be truncated cone-shaped and internal diameter be the casting mould of 200mm；
（2）, casting mould imbedded sand mould box, and will be tamped with molding sand around casting mould, compressed, refill resin
Sand, forms casting mold；
（3）, in sand mould box set cast gate, rising head, open gate groove, mo(u)ld venting；
（4）, by material for the molten steel injection casting mould of 40Cr in, the pouring temperature of molten steel is 1300 DEG C, and the duration of pouring is
23s, cast is cooled down after terminating, until the center portion temperature of casting be 1200 DEG C, surface temperature be 750 DEG C, then knockout takes out two
End is the casting bar of truncated cone-shaped and a diameter of 200mm；
（5）, by casting bar at once be put on cross wedge rolling machine roll, control rolled piece the contraction percentage of area be 90% under conditions of
Rolling material is 40Cr without material head shaft forgings.
Additionally, the above method is also applied for the processing without material head shaft forgings that material is other non-ferrous metals.
Claims (1)
1. a kind of casting without material head shaft forgings-roll manufacturing process, it is characterised in that including step in detail below：
（1）, make two ends be truncated cone-shaped and internal diameter be 30~200mm casting mould；
（2）, casting mould imbedded sand mould box, and will be tamped with molding sand around casting mould, compressed, refill resin
Sand, forms casting mold；
（3）, in sand mould box set cast gate, rising head, open gate groove, mo(u)ld venting；
（4）, molten steel injected in casting mould, the pouring temperature of molten steel is 1300 DEG C~1500 DEG C, the duration of pouring is 20~
25s, cast terminate after cool down, until the center portion temperature of casting be 1100 DEG C~1200 DEG C, surface temperature be 750 DEG C~800 DEG C,
Then knockout, takes out two ends and is truncated cone-shaped, and a diameter of 30~200mm casting bar；
（5）, casting bar be put on cross wedge rolling machine at once roll, in the bar that the contraction percentage of area for controlling rolled piece is 75%~95%
It is rolling without material head shaft forgings under part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254051.2A CN106862442A (en) | 2016-12-30 | 2016-12-30 | A kind of casting without material head shaft forgings-roll manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254051.2A CN106862442A (en) | 2016-12-30 | 2016-12-30 | A kind of casting without material head shaft forgings-roll manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106862442A true CN106862442A (en) | 2017-06-20 |
Family
ID=59164998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611254051.2A Pending CN106862442A (en) | 2016-12-30 | 2016-12-30 | A kind of casting without material head shaft forgings-roll manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106862442A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07299554A (en) * | 1994-05-02 | 1995-11-14 | Honda Motor Co Ltd | Die for casting aluminum provided with core pin |
| CN101618398A (en) * | 2009-08-06 | 2010-01-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling internal defects of steel |
| US20100307838A1 (en) * | 2009-06-05 | 2010-12-09 | Baker Hughes Incorporated | Methods systems and compositions for manufacturing downhole tools and downhole tool parts |
| CN104226915A (en) * | 2014-09-26 | 2014-12-24 | 衡阳中钢衡重铸锻有限公司 | Casting method of hollow shaft and casting mold |
| CN104972277A (en) * | 2015-06-29 | 2015-10-14 | 安庆市吉安汽车零件锻轧有限公司 | Machining technology for transverse rolling cam shaft workblank |
| CN105251946A (en) * | 2015-11-26 | 2016-01-20 | 江苏科技大学 | Casting device and casting method for anchor flukes |
| CN105618481A (en) * | 2016-03-15 | 2016-06-01 | 石家庄钢铁有限责任公司 | Equipment and process for conducting protruding roller rolling through continuous casting slab waste heat |
| CN105945342A (en) * | 2016-05-11 | 2016-09-21 | 宁波大学 | Circumferential shearing tool for plastic bars |
-
2016
- 2016-12-30 CN CN201611254051.2A patent/CN106862442A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07299554A (en) * | 1994-05-02 | 1995-11-14 | Honda Motor Co Ltd | Die for casting aluminum provided with core pin |
| US20100307838A1 (en) * | 2009-06-05 | 2010-12-09 | Baker Hughes Incorporated | Methods systems and compositions for manufacturing downhole tools and downhole tool parts |
| CN101618398A (en) * | 2009-08-06 | 2010-01-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling internal defects of steel |
| CN104226915A (en) * | 2014-09-26 | 2014-12-24 | 衡阳中钢衡重铸锻有限公司 | Casting method of hollow shaft and casting mold |
| CN104972277A (en) * | 2015-06-29 | 2015-10-14 | 安庆市吉安汽车零件锻轧有限公司 | Machining technology for transverse rolling cam shaft workblank |
| CN105251946A (en) * | 2015-11-26 | 2016-01-20 | 江苏科技大学 | Casting device and casting method for anchor flukes |
| CN105618481A (en) * | 2016-03-15 | 2016-06-01 | 石家庄钢铁有限责任公司 | Equipment and process for conducting protruding roller rolling through continuous casting slab waste heat |
| CN105945342A (en) * | 2016-05-11 | 2016-09-21 | 宁波大学 | Circumferential shearing tool for plastic bars |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |