CN105964910B - A kind of rod-shaped or column crystal rich chromium cast iron preparation method - Google Patents
A kind of rod-shaped or column crystal rich chromium cast iron preparation method Download PDFInfo
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- CN105964910B CN105964910B CN201610432100.0A CN201610432100A CN105964910B CN 105964910 B CN105964910 B CN 105964910B CN 201610432100 A CN201610432100 A CN 201610432100A CN 105964910 B CN105964910 B CN 105964910B
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- profiling
- cast iron
- chromium cast
- sand
- rich chromium
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- 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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
Abstract
A kind of rod-shaped or column crystal rich chromium cast iron preparation method.The non-eroded area casting mold molding sand of casting makees facing sand using quartz sand, eroded area casting mold uses profiling external chill, profiling external chill thickness is not less than 0.5 times of casting thickness or uses profiling can, lead to recirculated cooling water in profiling can, chromite sand, which is laid with, in profiling external chill or profiling can surface makees facing sand, 3 ~ 6mm of thickness.Method of the invention keeps rich chromium cast iron rod-shaped or column M7C3Type carbide oriented alignment and perpendicular to casting using face, increases substantially the wearability of rich chromium cast iron casting, is suitable for Cr15, Cr20, Cr25 type rich chromium cast iron.
Description
Technical field
The present invention relates to a kind of technology of preparing of high chromium cast iron material, more particularly to one kind are rod-shaped or columanar structure
Rich chromium cast iron preparation method.
Background technique
Rich chromium cast iron contains a large amount of high rigidity M7C3Type carbide, have good wearability, be widely used in prepare electric power,
The wear resistance castings such as the technology fields such as cement, mine, steel tup, bar, grinding roller, liner plate, abrading-ball, transh pump.Rich chromium cast iron is outstanding
It is M in hypereutectic high chromium cast iron7C3How in the shape of a rod type carbide is or column, often disorder distribution, however perpendicular to rod-shaped or column
The hardness in shape face, which is greater than, is parallel to rod-shaped or cylindrical face hardness.Using reasonable technological measure, make rod-shaped or column M7C3Type carbon
Compound oriented alignment and perpendicular to casting using face, increases substantially the wearability of rich chromium cast iron casting.
Summary of the invention
Present invention aims to rich chromium cast iron is rod-shaped or column M7C3Type carbide oriented alignment simultaneously makes perpendicular to casting
With face, the wearability of rich chromium cast iron casting is increased substantially.
The technical scheme is that the non-eroded area casting mold molding sand of casting makees facing sand, eroded area casting using quartz sand
Type uses profiling external chill, and profiling external chill thickness is not less than 0.5 times of casting thickness or uses profiling can, in profiling can
Logical recirculated cooling water is laid with chromite sand in external chill or can surface and makees facing sand, 3 ~ 6mm of thickness.
Method of the invention is suitable for Cr15, Cr20, Cr25 type rich chromium cast iron.
Method of the invention can be such that the eroded area cooling velocity of rich chromium cast iron casting improves, close to surface iron liquid to center portion
It forms big temperature gradient, accelerates carbide perpendicular to cast(ing) surface direction coarsening rate, so that the region carbide is in column
Shape aligns and perpendicular to cast(ing) surface.Its casting wearability ratio M7C3The disorderly arranged rich chromium cast iron casting of type carbide mentions
It is high by 50% or more.
Detailed description of the invention
Fig. 1 is rod-shaped or column oriented alignment M7C3Type carbide parallel cutting surfaces metallographic microstructure.
Fig. 2 is rod-shaped or column directional spreding M7C3The vertical cross section metallographic microstructure of type carbide.
Fig. 3 is to cover sand shape-copying frozen iron casting mold schematic diagram.
1. casting mold top box；2. quartz sand；3. running channel；4. casting mold type chamber；5. casting mold nowel；6. chromite sand；7. riser；8.
Shape-copying frozen iron.
Fig. 4 is to cover sand profiling can casting mold schematic diagram.
1. casting mold top box；2. quartz sand；3. running channel；4. casting mold type chamber；5. casting mold nowel；6. chromite sand；7. riser；8.
Profiling can.
Specific embodiment
Embodiment 1
Cr15 type rich chromium cast iron: C:3.5%, Cr:15%, Si:0.6%, Mn:0.6%, P:0.04%, S:0.04%, remaining be Fe
And inevitable impurity element.
The preparation method of rich chromium cast iron casting: the non-eroded area casting mold molding sand of casting makees facing sand using quartz sand；Worn area
Domain casting mold uses profiling external chill, and profiling external chill is with a thickness of 0.6 times of casting thickness；Ferrochrome is laid on profiling external chill surface
Ore in sand form makees facing sand, chromite sand thickness 3.5mm.
It is tested by three-body-abrasion, the present embodiment and control sample is made into loaded sample.Experiment condition: abrasive material is quartz
Sand (800 ~ 1200HV of microhardness, 30 ~ 50 mesh of granularity)；Load 2kg；The annealing 20# rail that loaded sample is covered in abrasive material
On make uniform circular motion, speed of mainshaft 30r/min.With the initial mass that is weighed as after pre-grinding 3min, every 2h carries out sample
Ultrasonic cleaning, drying, a weighing, test period 6h.
The wearability of 1 embodiment 1 of table
* use Three-body Abrasive Wear test method, with the present embodiment ingredient M of the same race7C3Type carbide is disorderly arranged
Rich chromium cast iron abrasion loss is used as referring to radix, and the abrasion loss of the present embodiment is in contrast, and the more big then wearability of number is higher.
* ingredient is same as Example 1, but does not use profiling external chill, M when preparation7C3Type carbide is disorderly arranged.
Embodiment 2
Cr20 type rich chromium cast iron ingredient use: C:3.6%, Cr:20%, Si:0.6%, Mn:0.6%, P:0.04%, S:0.04%,
Remaining is Fe and inevitable impurity element.
The preparation method of rich chromium cast iron casting: the non-eroded area casting mold molding sand of rich chromium cast iron casting makees face using quartz sand
Sand；Eroded area casting mold uses profiling external chill, and profiling external chill is with a thickness of 0.7 times of casting thickness；It is spread on external chill surface
If chromite sand makees facing sand, chromite sand thickness 4.5mm.
It is tested by three-body-abrasion, the present embodiment and control sample is made into loaded sample.Experiment condition: abrasive material is quartz
Sand (800 ~ 1200HV of microhardness, 30 ~ 50 mesh of granularity)；Load 2kg；The annealing 20# rail that loaded sample is covered in abrasive material
On make uniform circular motion, speed of mainshaft 30r/min.With the initial mass that is weighed as after pre-grinding 3min, every 2h carries out sample
Ultrasonic cleaning, drying, a weighing, test period 6h.
The wearability of 2 embodiment 2 of table
* use Three-body Abrasive Wear test method, with the present embodiment ingredient M of the same race7C3Type carbide is disorderly arranged
Rich chromium cast iron abrasion loss is used as referring to radix, and the abrasion loss of the present embodiment is in contrast, and the more big then wearability of number is higher.
* ingredient is same as Example 2, but does not use profiling external chill, M when preparation7C3Type carbide is disorderly arranged.
Embodiment 3
Cr25 type rich chromium cast iron: C:3.8%, Cr:25%, Si:0.6%, Mn:0.6%, P:0.04%, S:0.04%, remaining be Fe
And inevitable impurity element.
The preparation method of rich chromium cast iron casting: the non-eroded area casting mold molding sand of rich chromium cast iron casting makees face using quartz sand
Sand；Eroded area uses profiling can, leads to recirculated cooling water in profiling can；Chromite sand, which is laid with, on profiling can surface makees face
Sand, chromite sand thickness 5.5mm.
It is tested by three-body-abrasion, the present embodiment and control sample is made into loaded sample.Experiment condition: abrasive material is quartz
Sand (800 ~ 1200HV of microhardness, 30 ~ 50 mesh of granularity)；Load 2kg；The annealing 20# rail that loaded sample is covered in abrasive material
On make uniform circular motion, speed of mainshaft 30r/min.With the initial mass that is weighed as after pre-grinding 3min, every 2h carries out sample
Ultrasonic cleaning, drying, a weighing, test period 6h.
The wearability of 3 embodiment 3 of table
* use Three-body Abrasive Wear test method, with the present embodiment ingredient M of the same race7C3Type carbide is disorderly arranged
Rich chromium cast iron abrasion loss is used as referring to radix, and the abrasion loss of the present embodiment is in contrast, and the more big then wearability of number is higher.
* ingredient is same as Example 3, but does not use profiling can, M when preparation7C3Type carbide is disorderly arranged.
Claims (1)
1. a kind of rod-shaped or column crystal rich chromium cast iron preparation method, it is characterized in that the non-eroded area casting mold molding sand of casting uses stone
Sand makees facing sand, and eroded area casting mold uses profiling external chill or profiling can, and profiling external chill thickness is not less than casting thickness
0.5 times；Cr15 and Cr20 type rich chromium cast iron eroded area casting mold uses profiling external chill, Cr25 type rich chromium cast iron eroded area
Casting mold uses profiling can, leads to recirculated cooling water in profiling can, is laid with chromite in profiling external chill or profiling can surface
Sand makees facing sand, 3~6mm of thickness.
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| CN201610432100.0A CN105964910B (en) | 2016-06-17 | 2016-06-17 | A kind of rod-shaped or column crystal rich chromium cast iron preparation method |
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| CN201610432100.0A CN105964910B (en) | 2016-06-17 | 2016-06-17 | A kind of rod-shaped or column crystal rich chromium cast iron preparation method |
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| CN105964910A CN105964910A (en) | 2016-09-28 |
| CN105964910B true CN105964910B (en) | 2019-11-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101579729A (en) * | 2009-07-02 | 2009-11-18 | 南通华东液压铸业有限公司 | Shape-copying frozen iron composite forming die and forming technology thereof |
| CN102069152A (en) * | 2010-12-22 | 2011-05-25 | 宁夏共享集团有限责任公司 | Modeling method of large-size ring-structure casting |
| CN102166621A (en) * | 2011-04-09 | 2011-08-31 | 江苏金石铸锻有限公司 | Method for casting valve body of heavy-calibre non-rising-stem flat valve |
| CN104399897A (en) * | 2014-12-07 | 2015-03-11 | 西安诺博尔稀贵金属材料有限公司 | Tool for casting NiCrAlYSi alloy target and casting method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002346730A (en) * | 2001-05-25 | 2002-12-04 | Tomotetsu Kogyo Kk | Method for producing high strength spheroidal graphite cast iron |
| CN102615274A (en) * | 2012-04-14 | 2012-08-01 | 北京新方尊铸造科技有限责任公司 | Method for controlling solidification and cooling of heavy castings |
| CN203470871U (en) * | 2013-08-21 | 2014-03-12 | 浙江博星工贸有限公司 | Chilling block of chilled cast iron cam shaft |
-
2016
- 2016-06-17 CN CN201610432100.0A patent/CN105964910B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101579729A (en) * | 2009-07-02 | 2009-11-18 | 南通华东液压铸业有限公司 | Shape-copying frozen iron composite forming die and forming technology thereof |
| CN102069152A (en) * | 2010-12-22 | 2011-05-25 | 宁夏共享集团有限责任公司 | Modeling method of large-size ring-structure casting |
| CN102166621A (en) * | 2011-04-09 | 2011-08-31 | 江苏金石铸锻有限公司 | Method for casting valve body of heavy-calibre non-rising-stem flat valve |
| CN104399897A (en) * | 2014-12-07 | 2015-03-11 | 西安诺博尔稀贵金属材料有限公司 | Tool for casting NiCrAlYSi alloy target and casting method |
Non-Patent Citations (2)
| Title |
|---|
| 抛丸机叶片用高铬铸铁材质探究;李猛猛;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20141015(第10期);论文正文第38-44页 * |
| 高铬铸铁叶片局部定向凝固组织与性能研究;武广波等;《钢铁钒钛》;20030930;第24卷(第3期);第64-69页 * |
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Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of materials and processing, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangdong Institute Of Materials And Processing |
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Effective date of registration: 20220126 Address after: 510000 363 Changxin Road, Tianhe District, Guangzhou, Guangdong. Patentee after: Institute of new materials, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Institute of materials and processing, Guangdong Academy of Sciences |
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