CN103240403B - A kind of surface cast-infiltration technique being applicable to fine copper tuyere cover of blast furnace - Google Patents
A kind of surface cast-infiltration technique being applicable to fine copper tuyere cover of blast furnace Download PDFInfo
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- CN103240403B CN103240403B CN201310182655.0A CN201310182655A CN103240403B CN 103240403 B CN103240403 B CN 103240403B CN 201310182655 A CN201310182655 A CN 201310182655A CN 103240403 B CN103240403 B CN 103240403B
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Abstract
Be applicable to a surface cast-infiltration technique for fine copper tuyere cover of blast furnace, it is characterized in that described technology of infiltration casting comprises the following steps: (1) is by following weight proportion preparation raw material: copper base self-fluxing alloyed powder 100 ~ 300 order 60 ~ 80%, Al
2o
3powder 100 ~ 300 order 15 ~ 40%, waterglass 1 ~ 3%, remaining as water; (2) fully mixed by raw material, be coated in the surface for seep in casting mold die cavity, dry at the temperature of 150 ~ 220 DEG C, temperature retention time is 2 ~ 3 hours, then melted copper solution is poured into die cavity, and pouring temperature is 1150 ~ 1250 DEG C.The present invention, owing to being adopt component shaping and the one-time formed method of surface modification, does not need special equipment, and compare with other surface modifying methods and have with short production cycle, technique is simply, with low cost, process stabilizing feature.
Description
Technical field
The present invention relates to a kind of surface cast-infiltration technique being applicable to fine copper tuyere cover of blast furnace.
Background technology
Usually adopt heat treatment multicomponent thermochemical treatment to the surface treatment of blast-furnace tuyere, the method is the after-treatment after Workpiece shaping, and needs special equipment, production cycle is long, technique relative complex, owing to leaning on atoms permeating, the treatment surface degree of depth obtained is less, general tens microns.The casting of 20th century new development eighties ooze deliver surface modification process cast iron and cast steel application more, and had certain progress, but particularly made little progress in the copper that application is wider at non-ferrous metal.
Summary of the invention
The object of the present invention is to provide a kind of surface cast-infiltration technique being applicable to fine copper tuyere cover of blast furnace, it is simple that it has technique, with low cost and process stabilizing advantage.
The present invention is achieved like this, a kind of surface cast-infiltration technique being applicable to fine copper tuyere cover of blast furnace, and raw material and the proportioning of the employing of this technology of infiltration casting are as follows: copper base self-fluxing alloyed powder 100 ~ 300 order 60 ~ 80%, Al
2o
3powder 100 ~ 300 order 15 ~ 40%, waterglass 1 ~ 3%, water are appropriate.Fully mixed by raw material, be coated in the surface for seep in casting mold die cavity, dry at the temperature of 150 ~ 220 DEG C, temperature retention time is 2 ~ 3 hours, then melted copper solution is poured into die cavity, and pouring temperature is 1150 ~ 1250 DEG C.
Technique effect of the present invention is: the present invention is owing to being employing component shaping and the one-time formed method of surface modification, do not need special equipment, comparing with other surface modifying methods has with short production cycle, can form wear-resisting, heat-resisting, anti-oxidant, shock proof Cu-base composites infiltration layer at the position, front end of blast-furnace tuyere or inner chamber.
Detailed description of the invention
Embodiment one,
This technology of infiltration casting step is as follows:
(1) by following weight proportion preparation raw material: copper base self-fluxing alloyed powder 100 order 80%, Al
2o
3powder 100 order 15%, waterglass 1%, remaining as water;
(2) fully mixed by raw material, be coated in the surface for seep in casting mold die cavity, dry at the temperature of 150 DEG C, temperature retention time is 2 hours, then melted copper solution is poured into die cavity, and pouring temperature is 1150 DEG C.
The blast-furnace tuyere copper alloy workpiece obtained by said method, has following obvious characteristic:
1) alloying layer thickness 1 is to 2.5mm;
2) penetrated layer property: surperficial macrohardness: >=HRC50.
Embodiment two,
This technology of infiltration casting step is as follows:
(1) by following weight proportion preparation raw material: copper base self-fluxing alloyed powder 200 order 70%, Al
2o
3powder 200 order 25%, waterglass 2%, remaining as water;
(2) fully mixed by raw material, be coated in the surface for seep in casting mold die cavity, dry at the temperature of 180 DEG C, temperature retention time is 2.5 hours, then melted copper solution is poured into die cavity, and pouring temperature is 1200 DEG C.
The blast-furnace tuyere copper alloy workpiece obtained by said method, has following obvious characteristic:
1) alloying layer thickness 1 is to 2.7mm;
2) penetrated layer property: surperficial macrohardness: >=HRC50.
Embodiment three,
This technology of infiltration casting step is as follows:
(1) by following weight proportion preparation raw material: copper base self-fluxing alloyed powder 300 order 60%, Al
2o
3powder 300 order 35%, waterglass 3%, remaining as water;
(2) fully mixed by raw material, be coated in the surface for seep in casting mold die cavity, dry at the temperature of 220 DEG C, temperature retention time is 3 hours, then melted copper solution is poured into die cavity, and pouring temperature is 1250 DEG C.
The blast-furnace tuyere copper alloy workpiece obtained by said method, has following obvious characteristic:
1) alloying layer thickness 1 is to 3.0mm;
2) penetrated layer property: surperficial macrohardness: >=HRC50.
Claims (1)
1. be applicable to a surface cast-infiltration technique for fine copper tuyere cover of blast furnace, it is characterized in that described technology of infiltration casting comprises the following steps:
(1) by following weight proportion preparation raw material: copper base self-fluxing alloyed powder 100 ~ 300 order 60 ~ 80%, Al
2o
3powder 100 ~ 300 order 15 ~ 40%, waterglass 1 ~ 3%, remaining as water;
(2) fully mixed by raw material, be coated in the surface for seep in casting mold die cavity, dry at the temperature of 150 ~ 220 DEG C, temperature retention time is 2 ~ 3 hours, then melted copper melt is poured into die cavity, and pouring temperature is 1150 ~ 1250 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310182655.0A CN103240403B (en) | 2013-05-17 | 2013-05-17 | A kind of surface cast-infiltration technique being applicable to fine copper tuyere cover of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310182655.0A CN103240403B (en) | 2013-05-17 | 2013-05-17 | A kind of surface cast-infiltration technique being applicable to fine copper tuyere cover of blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103240403A CN103240403A (en) | 2013-08-14 |
| CN103240403B true CN103240403B (en) | 2016-04-13 |
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| CN201310182655.0A Expired - Fee Related CN103240403B (en) | 2013-05-17 | 2013-05-17 | A kind of surface cast-infiltration technique being applicable to fine copper tuyere cover of blast furnace |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838986A (en) * | 2016-05-23 | 2016-08-10 | 安徽鑫宏机械有限公司 | Casting method of scum gate valve body for mining |
| CN106011348B (en) * | 2016-07-11 | 2018-05-04 | 中国兵器科学研究院宁波分院 | A kind of restorative procedure of copper casting blast-furnace tuyere surface fracture |
| CN107695321B (en) * | 2017-09-18 | 2019-06-07 | 江南大学 | A kind of technique in aluminum silicon carbide composite material surface covering aluminium foil |
| CN107671265B (en) * | 2017-09-18 | 2019-06-04 | 江南大学 | In the technique of complex profile aluminium gold hard rock product surface covering aluminum matrix composite layer |
| CN108907152B (en) * | 2018-07-12 | 2020-08-18 | 刘少标 | Method for reducing wear rate of 304 stainless steel parts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3724995A1 (en) * | 1987-02-26 | 1988-09-08 | Radex Heraklith | Process for manufacturing a composite body and the composite body itself |
| CN1439471A (en) * | 2002-07-03 | 2003-09-03 | 甘肃工业大学 | Copper and copper alloy surface casting and penetrating process |
| CN1864894A (en) * | 2005-11-09 | 2006-11-22 | 兰州理工大学 | High furnace blast gate copper and copper alloy surface cast-infiltration method |
| CN1974847A (en) * | 2006-12-14 | 2007-06-06 | 天津理工大学 | Surface reinforcing method for tuyere of blast furnace |
-
2013
- 2013-05-17 CN CN201310182655.0A patent/CN103240403B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3724995A1 (en) * | 1987-02-26 | 1988-09-08 | Radex Heraklith | Process for manufacturing a composite body and the composite body itself |
| CN1439471A (en) * | 2002-07-03 | 2003-09-03 | 甘肃工业大学 | Copper and copper alloy surface casting and penetrating process |
| CN1864894A (en) * | 2005-11-09 | 2006-11-22 | 兰州理工大学 | High furnace blast gate copper and copper alloy surface cast-infiltration method |
| CN1974847A (en) * | 2006-12-14 | 2007-06-06 | 天津理工大学 | Surface reinforcing method for tuyere of blast furnace |
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