CN1064425A - Alloy cast iron cylinder jacke centre spinning method and equipment - Google Patents
Alloy cast iron cylinder jacke centre spinning method and equipment Download PDFInfo
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- CN1064425A CN1064425A CN 92100768 CN92100768A CN1064425A CN 1064425 A CN1064425 A CN 1064425A CN 92100768 CN92100768 CN 92100768 CN 92100768 A CN92100768 A CN 92100768A CN 1064425 A CN1064425 A CN 1064425A
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Abstract
The present invention relates to a kind of alloy cast iron cylinder jacke centre spinning method and horizontal centrifugal casting machine thereof.
The present invention is to be 1400～1320 ℃ liquid alloy cast iron with pouring temperature, from operating temperature is 120～250 ℃, rotating speed is to be incorporated in the metal centrifugal casting mould in 630r/min and the annular end cap hole with metal centrifugal casting mould one side of dope layer to pour into a mould, for the liquid alloy cast iron of 140kg, poring rate is controlled at 40～45s.
The present invention has improved casting yield, has simplified technical process, has purified operating environment, has alleviated labour intensity.
Description
The present invention relates to a kind of alloy cast iron cylinder jacke centre spinning method and horizontal centrifugal casting machine thereof.
At present the high powered diesel locomotive alloy cast iron cylinder jacke adopts sand casting usually, shortcoming such as exist that casting quality is poor, yield rate is low, operation is numerous and diverse, dust work, contaminated environment, labour intensity are big.
The objective of the invention is to overcome weak point in the prior art, a kind of alloy cast iron cylinder jacke centre spinning method and horizontal centrifugal casting machine thereof are provided.
Purpose of the present invention can reach by following technical proposals.
A kind of alloy cast iron cylinder jacke centre spinning method is characterized in that:
A, this alloy cast iron are by Cr0.2～0.4%, Mo0.5～0.8%, Cu0.8～1.2%, C2.7～3.2%, Si1.5～2.0%, Mn0.5～0.8%, and surplus is that Fe forms.
B, metal centrifugal casting mould preheat temperature are 250～300 ℃, and temperature retention time is 4 hours.
C, at the metal centrifugal casting mould inner surface stenciling coating of preheating, coating is the silica flour of 0.9 weight portion, the diatomite of 0.1 weight portion adds suitable quantity of water, paint thickness is 1.5～2mm.
D, with the metal centrifugal casting mould of first-class coating insulation, temperature is 120～250 ℃, at least 10 minutes time.
E, alloy cast iron smelting temperature are 1520～1540 ℃, leave standstill after 3 minutes to come out of the stove.
F, with pouring temperature 1400～1320 ℃ liquid alloy cast iron, from operating temperature is 120～250 ℃, rotating speed is 630r/min, and pour into a mould with being incorporated in the metal centrifugal casting mould in the metal centrifugal casting mould one side ring shape ending cover hole of dope layer, for the liquid alloy cast iron of 140kg, poring rate is controlled at 40～45S.
Shut down in 10～15 minutes g, cast back, and foundry goods hangs horizontal centrifugal casting machine together with metal centrifugal casting mould, carries out the normal temperature cooling, after 12 hours foundry goods is taken out from metal centrifugal casting mould, carries out Ageing Treatment.
A kind of horizontal centrifugal casting machine that uses alloy cast iron cylinder jacke centre spinning method as claimed in claim 1, it comprises driven shaft, metal centrifugal casting mould, the casting ladle that motor-driven two ends are equipped with the horizontal driving shaft of support roller, the two ends that parallel with horizontal driving shaft are equipped with support roller, it is characterized in that:
A, metal centrifugal casting mould are fastened on by cylinder and by taper pin that the annular end cap that has groove at cylinder two ends forms.
B, driving shaft support roller center, driven shaft support roller center and metal centrifugal casting mould line of centres angle α are 110 °.
C, metal centrifugal casting mould rotating speed are 630r/min.
D, metal centrifugal casting mould inner surface tapering are 1: 100～1: 300.
This alloy cast iron, if the carbon silicone content is higher, foundry goods is not fine and close, and ferrite transfinites, and the carbon silicone content is on the low side, and though the foundry goods densification, graphite is short and small, the foundry goods amount of bow is little, for this reason, carbon equivalent C in this alloy cast iron
6Get 3.65～3.75, silicon carbon ratio Si/C gets 0.63～0.71.
Add Sn0.02～0.05% a large amount of when using the old material of alloy cast iron cylinder jackes, the tin film surrounds and also suppresses pearlite decomposition, both can solve the ferrite problem that transfinites, and does not reduce the mechanical performance of alloy cast iron again.
Metal centrifugal casting mould preheat temperature is too high, and its inner surface is coated easy formation honeycomb-like pores, influences casting quality, and preheat temperature is low excessively, and aqueous coating is not done solid for a long time, brings difficulty to operation, and for this reason, preheat temperature is 250～300 ℃, and is incubated 4 hours.
Dope layer is blocked up, and coating is puted forth effort little to metal centrifugal casting mould inner surface additional, and coating is easily destroyed by molten metal, and cover light loses the slow cooling effect, and the foundry goods degree of supercooling increases, and easily produces spoken parts in traditional operas, and for this reason, coating layer thickness is 1.5～2mm.
For moisture content is thoroughly discharged, the metal centrifugal casting mould of first-class coating must not be poured into a mould immediately, should deliver in the kiln to be incubated.Temperature is low excessively, and cast outer surface easily cracks, and temperature is too high, and cast outer surface is prone to inner small and outside big horn-like air pocket, and for this reason, metal centrifugal casting mould holding temperature is controlled to be 120～250 ℃.
Poring rate directly influences casting quality, pours into a mould too fastly, and the two-sided crystallization of aggravation centrifugal casting generates, and shrinkage porosite occurs in the middle of the foundry goods, pours into a mould slowly, and foundry goods easily forms the oxidation interlayer, and for this reason, for the liquid alloy cast iron of 140kg, poring rate is controlled at 40～45S.
Driving shaft support roller center, driven shaft support roller center and metal centrifugal casting mould line of centres angle α are too small, metal centrifugal casting mould easily flies out under action of centrifugal force, cause personal equipment breakdown, angle α is excessive, and frictional force increases between metal centrifugal casting mould and the support roller, influences metal centrifugal casting mould and equipment life, for this reason, the α angle is got 110 °.
Metal centrifugal casting mould rotating speed is excessive, and alloy cast iron is prone to segregation, and rotating speed is too small, can not make full use of the effect of centrifugal force field, obtains good foundry goods, and for this reason, the rotating speed of metal centrifugal casting mould is got 630r/min.
Use the resulting alloy cast iron cylinder jacke of the present invention and have mechanical performance preferably, foundry goods densification, wear-resisting, long working life, casting qualified rate brings up to 90% by 50% of sand casting, simplified technological operation, reduced to 8 procedures, no dust pollution by 19 procedures of sand casting, purify operating environment, alleviated labour intensity.
Figure 1A, 1B are metallographic matrix figure, the graphite form figure of embodiment 1.
Fig. 2 A, 2B are metallographic matrix figure, the graphite form figure of embodiment 2.
Fig. 3 A, 3B are metallographic matrix figure, the graphite form figure of embodiment 3.
Fig. 4 A, 4B are the left view of horizontal centrifugal casting machine structure chart, this structure.
Fig. 5 is a metal centrifugal casting mould structure chart.
Now in conjunction with the accompanying drawings, the present invention is further illustrated.
From Figure 1A 1B, 2A2B, 3A3B as can be seen, the metallographic structure of three embodiment, matrix is a pearlite, free state ferrite content≤1%, graphite form is sheet, chrysanthemum attitude, graphite length≤250 μ m.The chemical analysis of three embodiment and mechanical performance thereof are shown in table one, two.
With reference to Fig. 4 A, motor 1 drives the active trunnion axis 4 that two ends are equipped with support roller 2,3 by belt drive system, and driven trunnion axis 5 two ends also are equipped with support roller 6,7, and parallel with active trunnion axis 4.
With reference to Fig. 4 B, active trunnion axis center O
1, driven trunnion axis center O
2With metal centrifugal casting mould center O
3Line angle α be 110 °.
With reference to Fig. 5, the reeded annular end cap of two ends mounting strap (802) of cylinder (801), (803), three taper pins of left end (804) (not expression among all the other two taper pin figure) are distributed on the cylinder left part radially from inside to outside with end cap (802) fastening (right end cap 803 fastening means also together).Be pressed into exotic material in the groove of annular end cap (802), (803).
Claims (2)
1, a kind of alloy cast iron cylinder jacke centre spinning method is characterized in that:
A, this alloy cast iron are by Cr0.2～0.4%, Mo0.5～0.8%, Cu0.8～1.2%, C2.7～3.2%, Si1.5～2.0%, Mn0.5～0.8%, and surplus is that Fe forms;
B, metal centrifugal casting mould preheat temperature are 250～300 ℃, and temperature retention time is 4 hours;
C, at the metal centrifugal casting mould inner surface stenciling coating of preheating, coating is the silica flour of 0.9 weight portion, the diatomite of 0.1 weight portion adds suitable quantity of water, paint thickness is 1.5～2mm;
D, with the metal centrifugal casting mould of first-class coating insulation, temperature is 120～250 ℃, at least 10 minutes time;
E, alloy cast iron smelting temperature are 1520～1540 ℃, leave standstill after 3 minutes to come out of the stove;
F, with pouring temperature 1400～1320 ℃ liquid alloy cast iron, from operating temperature is 120～250 ℃, rotating speed is 630 γ/min, and pour into a mould with being incorporated in the metal centrifugal casting mould in the metal centrifugal casting mould one side ring shape ending cover hole of dope layer, for the liquid alloy cast iron of 140kg, poring rate is controlled at 40～45S;
Shut down in 10～15 minutes g, cast back, and foundry goods hangs horizontal centrifugal casting machine together with metal centrifugal casting mould, carries out the normal temperature cooling, after 12 hours foundry goods is taken out from metal centrifugal casting mould, carries out Ageing Treatment.
2, a kind of horizontal centrifugal casting machine that uses alloy cast iron cylinder jacke centre spinning method as claimed in claim 1, it comprises driven shaft, metal centrifugal casting mould, the casting ladle that motor-driven two ends are equipped with the horizontal driving shaft of support roller, the two ends that parallel with horizontal driving shaft are equipped with support roller, it is characterized in that:
A, metal centrifugal casting mould are fastened on by cylinder and by taper pin that the annular end cap that has groove at cylinder two ends forms;
B, driving shaft support roller center, driven shaft support roller center and metal centrifugal casting mould line of centres angle α are 110 °;
C, metal centrifugal casting mould rotating speed are 630r/min;
D, metal centrifugal casting mould inner surface tapering are 1: 100～1: 300.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92100768 CN1022810C (en) | 1992-02-03 | 1992-02-03 | Centrifugal casting method and equipment for alloy cast iron cylinder jacke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92100768 CN1022810C (en) | 1992-02-03 | 1992-02-03 | Centrifugal casting method and equipment for alloy cast iron cylinder jacke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1064425A true CN1064425A (en) | 1992-09-16 |
| CN1022810C CN1022810C (en) | 1993-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92100768 Expired - Fee Related CN1022810C (en) | 1992-02-03 | 1992-02-03 | Centrifugal casting method and equipment for alloy cast iron cylinder jacke |
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|---|---|
| CN (1) | CN1022810C (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295049C (en) * | 2005-07-01 | 2007-01-17 | 沪东重机股份有限公司 | Marine large-diameter cylinder liner casting method |
| CN100348854C (en) * | 2004-12-11 | 2007-11-14 | 董宽志 | Manufacturing method of laminated gradient composite ceramic cylinder jacket |
| CN101899610A (en) * | 2010-08-31 | 2010-12-01 | 卫辉熔金高温材料有限责任公司 | Wet pan gear and manufacturing method thereof |
| CN101698219B (en) * | 2009-10-23 | 2011-04-27 | 湖北省缸套厂 | Method for casting negative pressure solid cylinder sleeve |
| CN102101242A (en) * | 2009-12-17 | 2011-06-22 | 江苏双勤民生冶化设备制造有限公司 | Method for machining reformer tube |
| CN101338704B (en) * | 2008-08-27 | 2012-02-08 | 重庆大学 | Inner layer granule reinforced cylinder sleeve and method of manufacture |
| CN102380598A (en) * | 2011-11-02 | 2012-03-21 | 张立庆 | Manufacturing process of piston of hydraulic cylinder |
| CN103722144A (en) * | 2012-10-13 | 2014-04-16 | 南车戚墅堰机车车辆工艺研究所有限公司 | Method for preparing steel-based copper-alloy thermometal spherical bearing seat blank |
| CN104001893A (en) * | 2014-04-25 | 2014-08-27 | 江苏紫金动力股份有限公司 | Fabrication method of cylinder liner and special device therefor |
| CN104874759A (en) * | 2015-05-21 | 2015-09-02 | 凤冈县凤鸣农用机械制造有限公司 | Thin-wall part centrifugal casting method |
| CN105238992A (en) * | 2015-11-13 | 2016-01-13 | 中原内配集团安徽有限责任公司 | Casting method for engine cylinder sleeve |
| CN105401063A (en) * | 2015-11-25 | 2016-03-16 | 中原内配集团股份有限公司 | As-cast malleable cast iron cylinder sleeve produced through centrifugal casting and production process of as-cast malleable cast iron cylinder sleeve |
| CN106191641A (en) * | 2016-06-30 | 2016-12-07 | 中原内配集团安徽有限责任公司 | A kind of production method strengthening cylinder jacket |
| CN106435340A (en) * | 2016-08-30 | 2017-02-22 | 中原内配集团安徽有限责任公司 | Method of producing cylinder sleeve with thread grooves uniformly distributed on excircle |
| CN107716888A (en) * | 2017-10-25 | 2018-02-23 | 四川共享铸造有限公司 | A kind of centre spinning method of cylinder jacket |
| CN108034884A (en) * | 2017-11-22 | 2018-05-15 | 江苏恒立液压股份有限公司 | Cylinder cover casting technique |
| CN108098265A (en) * | 2017-12-13 | 2018-06-01 | 太原科技大学 | A kind of non-ferrous metal seamless shell production technology |
| CN109834239A (en) * | 2019-03-25 | 2019-06-04 | 河南中原吉凯恩气缸套有限公司 | A kind of high-phosphorous iron Cylinder Sleeve by Centrifugal Casting mold |
| CN110814311A (en) * | 2019-12-10 | 2020-02-21 | 安徽省岳西缸套有限公司 | Centrifugal casting process for cylinder sleeve |
-
1992
- 1992-02-03 CN CN 92100768 patent/CN1022810C/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348854C (en) * | 2004-12-11 | 2007-11-14 | 董宽志 | Manufacturing method of laminated gradient composite ceramic cylinder jacket |
| CN1295049C (en) * | 2005-07-01 | 2007-01-17 | 沪东重机股份有限公司 | Marine large-diameter cylinder liner casting method |
| CN101338704B (en) * | 2008-08-27 | 2012-02-08 | 重庆大学 | Inner layer granule reinforced cylinder sleeve and method of manufacture |
| CN101698219B (en) * | 2009-10-23 | 2011-04-27 | 湖北省缸套厂 | Method for casting negative pressure solid cylinder sleeve |
| CN102101242A (en) * | 2009-12-17 | 2011-06-22 | 江苏双勤民生冶化设备制造有限公司 | Method for machining reformer tube |
| CN101899610A (en) * | 2010-08-31 | 2010-12-01 | 卫辉熔金高温材料有限责任公司 | Wet pan gear and manufacturing method thereof |
| CN102380598A (en) * | 2011-11-02 | 2012-03-21 | 张立庆 | Manufacturing process of piston of hydraulic cylinder |
| CN103722144A (en) * | 2012-10-13 | 2014-04-16 | 南车戚墅堰机车车辆工艺研究所有限公司 | Method for preparing steel-based copper-alloy thermometal spherical bearing seat blank |
| CN103722144B (en) * | 2012-10-13 | 2016-04-27 | 南车戚墅堰机车车辆工艺研究所有限公司 | The preparation method of steel-based copper alloy dual-metal spherical bearing block blank |
| CN104001893B (en) * | 2014-04-25 | 2016-04-20 | 江苏紫金动力股份有限公司 | A kind of preparation method of cylinder sleeve and special purpose device thereof |
| CN104001893A (en) * | 2014-04-25 | 2014-08-27 | 江苏紫金动力股份有限公司 | Fabrication method of cylinder liner and special device therefor |
| CN104874759A (en) * | 2015-05-21 | 2015-09-02 | 凤冈县凤鸣农用机械制造有限公司 | Thin-wall part centrifugal casting method |
| CN105238992A (en) * | 2015-11-13 | 2016-01-13 | 中原内配集团安徽有限责任公司 | Casting method for engine cylinder sleeve |
| CN105401063A (en) * | 2015-11-25 | 2016-03-16 | 中原内配集团股份有限公司 | As-cast malleable cast iron cylinder sleeve produced through centrifugal casting and production process of as-cast malleable cast iron cylinder sleeve |
| CN105401063B (en) * | 2015-11-25 | 2017-08-25 | 中原内配集团股份有限公司 | A kind of the ductile cast iron as-cast cylinder jacket and its production technology of centrifugal casting production |
| CN106191641A (en) * | 2016-06-30 | 2016-12-07 | 中原内配集团安徽有限责任公司 | A kind of production method strengthening cylinder jacket |
| CN106435340A (en) * | 2016-08-30 | 2017-02-22 | 中原内配集团安徽有限责任公司 | Method of producing cylinder sleeve with thread grooves uniformly distributed on excircle |
| CN107716888A (en) * | 2017-10-25 | 2018-02-23 | 四川共享铸造有限公司 | A kind of centre spinning method of cylinder jacket |
| CN108034884A (en) * | 2017-11-22 | 2018-05-15 | 江苏恒立液压股份有限公司 | Cylinder cover casting technique |
| CN108098265A (en) * | 2017-12-13 | 2018-06-01 | 太原科技大学 | A kind of non-ferrous metal seamless shell production technology |
| CN109834239A (en) * | 2019-03-25 | 2019-06-04 | 河南中原吉凯恩气缸套有限公司 | A kind of high-phosphorous iron Cylinder Sleeve by Centrifugal Casting mold |
| CN110814311A (en) * | 2019-12-10 | 2020-02-21 | 安徽省岳西缸套有限公司 | Centrifugal casting process for cylinder sleeve |
| CN110814311B (en) * | 2019-12-10 | 2021-11-19 | 安徽玄同机电科技有限公司 | Centrifugal casting process for cylinder sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1022810C (en) | 1993-11-24 |
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