CN104690222A - High-strength wear-resistant roller production technology - Google Patents
High-strength wear-resistant roller production technology Download PDFInfo
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- CN104690222A CN104690222A CN201310652793.0A CN201310652793A CN104690222A CN 104690222 A CN104690222 A CN 104690222A CN 201310652793 A CN201310652793 A CN 201310652793A CN 104690222 A CN104690222 A CN 104690222A
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- China
- Prior art keywords
- sand
- production technology
- core
- strength abrasion
- roller according
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Classifications
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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
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- 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
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention relates to a high-strength wear-resistant roller production technology, which belongs to the roller production and manufacture field. The production technology employs sand casting, and is characterized by comprising the following steps: 1)employing a wet-type clay-bonded sand moulding method to prepare an upper outer sand mold and a lower outer sand mold; 2)employing a resin sand core-making method to obtain a core; 3)performing dip-coating on a fireproof paint on the external surface of the core; 4)setting the core; 5)closing a mould; 6)employing an electric furnace melting iron liquid for casting to obtain a casting blank; 7)cleaning the casting blank; 8)performing anticorrosion spraying; and 9) examining to obtain the high-strength wear-resistant roller finished product. According to the production technology, the roller with advantages of high intensity, high hardness, good wear resistance and stable performance can be obtained, appearance is fine and beautiful, yield is high, and the requirements of the special rollers in an agricultural machinery industry can be satisfied.
Description
Technical field
The present invention relates to a kind of production technology of high-strength abrasion-proof roller, belong to roller and manufacture field.
Background technology
The production field of roller traditional at present, main process is by original clay-bonded sand moulding, obtains the blank of roller after cast iron liquid, after cleaning rust prevention by applying liquid material paint, obtain roller finished product.The drawback of this production method is, the farm machinery parts blank outward appearance of acquisition is coarse, sand holes pore is many, waste product is many, and intensity is low, easy to wear, cannot meet the particular/special requirement of high-strength abrasion-proof product.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: provide a kind of and can obtain that yield rate is high, good looking appearance, stable performance the production technology of high-strength abrasion-proof roller, the particular/special requirement of agriculture machinery industry pair roller can be met.
The production technology of high-strength abrasion-proof roller of the present invention, the production technology of high-strength abrasion-proof roller, adopts sand casting, comprises the following steps: (1) adopts green sand formative method to obtain upper and lower two outer sand molds; (2) resin sand core-making method is adopted to obtain core; (3) core outer surface dip-coating fireproof coating; (4) core under; (5) mould assembling; (6) adopt electro-smelting iron liquid to carry out cast and obtain spray; (7) spray is cleared up; (8) anti-corrosion spray is carried out; (8) the roller finished product of high-strength abrasion-proof is obtained through inspection.
Green sand formative method in step (1) is that employing 100 part of 40 ~ 70 order cleans sand, adds 3 ~ 6 parts of coal dusts, 5 ~ 9 parts of potter's clay and 5 ~ 6 parts of water and carries out after the mixed system of simpson mill.Make the dioxide-containing silica of the outer sand mold of gained reach more than 90% by this method, sand hardness reaches 90 units, thus improves refractoriness, improves surface quality.
Resin sand core-making method in step (2) is that employing 100 part of 30 ~ 50 order cleans sand, adds 1 part of furane resins and 0.5 part of toluenesulfonic acid curing agent carries out after the mixed system of both arms flow mixer.
Above-mentioned scouring sand is extra large sand or Desert Sand.
In step (3), fireproof coating adopts alcohol radical graphite paint.
In step (6), electro-smelting iron liquid adopts mandreless spinning melting process; Containing the manganese of 1.1 ~ 1.3% in electro-smelting iron liquid, be conducive to the intensity of raising finished product, hardness and abrasion resistance.
In step (8), anti-corrosion spray adopts epoxy resin coating, and coating thickness is 60 ~ 80 μm.
The beneficial effect that the present invention is compared with prior art had is:
Can obtain by adopting this production technology that intensity is high, hardness is high, wearability is good and the roller of stable performance, and outward appearance exquisiteness is attractive in appearance, yield rate is high, can meet the requirement of the special roller of agriculture machinery industry.
Detailed description of the invention
Below embodiments of the invention are described further:
Embodiment one:
301012 slim rollers, attach it to the assigned address of machine during use, for large-scale agriculture machinery industry, require that roller has high strength, good anti-wear performance to guarantee the service life of agricultural machinery, its production technology is as follows:
Green sand formative method is first adopted to obtain upper and lower two outer sand molds, resin sand core-making method is adopted to obtain core afterwards, lower core mould assembling is carried out after core dip-coating fireproof coating, adopt electro-smelting iron liquid to carry out cast and obtain spray, through cleaning, then after carrying out anti-corrosion spray and inspection, obtain the roller finished product of high-strength abrasion-proof.
Wherein, green sand formative method is employing 100 part of 40 ~ 70 order sea sand, adds 3 parts of coal dusts, 5 parts of potter's clay and 5 parts of water and carries out after the mixed system of simpson mill; Resin sand core-making method is employing 100 part of 30 ~ 50 order Desert Sand, adds 0.8 part of furane resins and 0.4 part of toluenesulfonic acid curing agent carries out after the mixed system of both arms flow mixer; Fireproof coating adopts alcohol radical graphite paint; Electro-smelting iron liquid adopts mandreless spinning melting process, and makes the manganese containing 1.1% in iron liquid; Anti-corrosion spray adopts epoxy resin coating, and coating thickness is 60 μm.
After adopting this technique, roller yield rate controls more than 97%, and outward appearance exquisiteness is attractive in appearance, does destructive testing, does the similar movement of falling object from 1.5m eminence, reaches 6 times, does not break.Tensile strength reaches more than 270MPa, and body hardness reaches more than 200HB, and its service life is higher than 2 times of common process.
Embodiment two:
A kind of 301002 rollers of thicker, the assigned address of agricultural machinery is attached it to during use, for industries such as large-scale agricultural machinery, require that roller has high strength, good anti-wear performance to guarantee the service life of agricultural machinery, its production craft step is with embodiment one.
Wherein, green sand formative method is employing 100 part of 40 ~ 70 order sea sand, adds 4.5 parts of coal dusts, 7 parts of potter's clay and 5.5 parts of water and carries out after the mixed system of simpson mill; Resin sand core-making method is employing 100 part of 30 ~ 50 order Desert Sand, adds 1 part of furane resins and 0.5 part of toluenesulfonic acid curing agent carries out after the mixed system of both arms flow mixer; Fireproof coating adopts alcohol radical graphite paint; Electro-smelting iron liquid adopts mandreless spinning melting process, and makes the manganese containing 1.2% in iron liquid; Anti-corrosion spray adopts epoxy resin coating, and coating thickness is 70 μm.
After adopting this technique, roller yield rate controls more than 98%, and outward appearance exquisiteness is attractive in appearance.Fe content is more than 1.1%, and casting pig belongs to alloyed cast iron, and its intensity is high, and hardness is high, and wearability is good, and its service life is higher than 3 times of common process.
Embodiment three:
A kind of 101106 rollers of thicker, attach it to the assigned address of agricultural machinery during use, for industries such as mechanizations of agriculture, require that roller has high strength, good anti-wear performance to guarantee service life, improve agricultural production efficiency, its production craft step is with embodiment one.
Wherein, green sand formative method is employing 100 part of 40 ~ 70 order sea sand, adds 6 parts of coal dusts, 9 parts of potter's clay and 6 parts of water and carries out after the mixed system of simpson mill; Resin sand core-making method is employing 100 part of 30 ~ 50 order Desert Sand, adds 1.2 parts of furane resins and 0.6 part of toluenesulfonic acid curing agent carries out after the mixed system of both arms flow mixer; Fireproof coating adopts alcohol radical graphite paint; Electro-smelting iron liquid adopts mandreless spinning melting process, and makes the manganese containing 1.3% in iron liquid; Anti-corrosion spray adopts epoxy resin coating, and coating thickness is 80 μm.
After adopting this technique, roller yield rate controls more than 97.5%, and outward appearance exquisiteness is attractive in appearance, and Fe content is higher, and intensity, the anti-wear performance of roller all reach instructions for use.
Claims (8)
1. a production technology for high-strength abrasion-proof roller, adopts sand casting, it is characterized in that: comprise the following steps: (1) adopts green sand formative method to obtain upper and lower two outer sand molds; (2) resin sand core-making method is adopted to obtain core; (3) core outer surface dip-coating fireproof coating; (4) core under; (5) mould assembling; (6) adopt electro-smelting iron liquid to carry out cast and obtain spray; (7) spray is cleared up; (8) anti-corrosion spray is carried out; (9) the roller finished product of high-strength abrasion-proof is obtained through inspection.
2. the production technology of high-strength abrasion-proof roller according to claim 1, it is characterized in that: the green sand formative method in described step (1) is that employing 100 part of 40 ~ 70 order cleans sand, add 3 ~ 6 parts of coal dusts, 5 ~ 9 parts of potter's clay and 5 ~ 6 parts of water and carry out after the mixed system of simpson mill.
3. the production technology of high-strength abrasion-proof roller according to claim 1, it is characterized in that: the resin sand core-making method in described step (2) is that employing 100 part of 30 ~ 50 order cleans sand, add 0.8 ~ 1.2 part of furane resins and 0.4 ~ 0.6 part of toluenesulfonic acid curing agent carries out after the mixed system of both arms flow mixer.
4. the production technology of the high-strength abrasion-proof roller according to Claims 2 or 3, is characterized in that: described scouring sand is extra large sand or Desert Sand.
5. the production technology of the high-strength abrasion-proof roller according to claim 1,2 or 3, is characterized in that: described fireproof coating adopts alcohol radical graphite paint.
6. the production technology of the high-strength abrasion-proof roller according to claim 1,2 or 3, is characterized in that: containing the manganese of 1.1 ~ 1.3% in described electro-smelting iron liquid.
7. the production technology of high-strength abrasion-proof roller according to claim 6, is characterized in that: described electro-smelting iron liquid adopts mandreless spinning melting process.
8. the production technology of high-strength abrasion-proof roller according to claim 1, is characterized in that: described anti-corrosion spray adopts epoxy resin coating, and coating thickness is 60 ~ 80 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310652793.0A CN104690222A (en) | 2013-12-05 | 2013-12-05 | High-strength wear-resistant roller production technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310652793.0A CN104690222A (en) | 2013-12-05 | 2013-12-05 | High-strength wear-resistant roller production technology |
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| CN104690222A true CN104690222A (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310652793.0A Pending CN104690222A (en) | 2013-12-05 | 2013-12-05 | High-strength wear-resistant roller production technology |
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| CN (1) | CN104690222A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855464A (en) * | 2016-03-03 | 2016-08-17 | 柳州永旺科技有限公司 | Roller production technology of loosener |
| CN105855476A (en) * | 2016-03-03 | 2016-08-17 | 柳州永旺科技有限公司 | Roller production technology used in agricultural machinery |
| CN106312042A (en) * | 2016-08-31 | 2017-01-11 | 安徽恒达铁路器材有限公司 | Novel casting technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934342A (en) * | 2010-09-02 | 2011-01-05 | 吴江市液铸液压件铸造有限公司 | Molding sand for casting pressure plates |
| CN102601318A (en) * | 2011-12-15 | 2012-07-25 | 宁夏共享集团有限责任公司 | Casting method for thin-wall annular cast |
| CN102744373A (en) * | 2012-07-05 | 2012-10-24 | 繁昌县金科铸造有限责任公司 | Casting process for piston shell |
-
2013
- 2013-12-05 CN CN201310652793.0A patent/CN104690222A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934342A (en) * | 2010-09-02 | 2011-01-05 | 吴江市液铸液压件铸造有限公司 | Molding sand for casting pressure plates |
| CN102601318A (en) * | 2011-12-15 | 2012-07-25 | 宁夏共享集团有限责任公司 | Casting method for thin-wall annular cast |
| CN102744373A (en) * | 2012-07-05 | 2012-10-24 | 繁昌县金科铸造有限责任公司 | Casting process for piston shell |
Non-Patent Citations (3)
| Title |
|---|
| 中国机械工业学会铸造分会: "《铸造手册 第4卷 造型材料》", 31 May 2002, article "造型材料", pages: 7,93-98,156-160,191,202 * |
| 崔士选等: "提高铸铁机滚轮寿命的研究", 《机械工人.热加工》, no. 11, 30 November 2004 (2004-11-30), pages 60 * |
| 马贤昆: "铸铁湿型型砂的质量控制", 《机械工人.热加工》, no. 08, 31 August 1999 (1999-08-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855464A (en) * | 2016-03-03 | 2016-08-17 | 柳州永旺科技有限公司 | Roller production technology of loosener |
| CN105855476A (en) * | 2016-03-03 | 2016-08-17 | 柳州永旺科技有限公司 | Roller production technology used in agricultural machinery |
| CN106312042A (en) * | 2016-08-31 | 2017-01-11 | 安徽恒达铁路器材有限公司 | Novel casting technology |
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Application publication date: 20150610 |