CN103422010A - Wet mill dedicated liner plate - Google Patents
Wet mill dedicated liner plate Download PDFInfo
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- CN103422010A CN103422010A CN2012101490901A CN201210149090A CN103422010A CN 103422010 A CN103422010 A CN 103422010A CN 2012101490901 A CN2012101490901 A CN 2012101490901A CN 201210149090 A CN201210149090 A CN 201210149090A CN 103422010 A CN103422010 A CN 103422010A
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Abstract
Provided is a wet mill dedicated liner plate. A preparation method comprises the steps: carrying out inspection measurement of raw materials, putting into an electric furnace for smelting, simultaneously carrying out chemical analysis, reasonably adjusting a chemical composition ratio, aiming at different acidic and alkaline environments, respectively employing different carbon contents, adding corrosion resistant alloy elements such as chromium, copper and the like, and thereby improving the toughness and the abrasion resistance of the product; after hardening, tempering and removing slag, carrying out modification treatment of discharged molten iron by yttrium-based raw rare earth, purifying the molten iron, reducing impurities, carrying out chemical analysis of the modified molten iron, and then pouring sand mold for molding; after cleaning, polishing and checking, going into a heat treatment procedure, carrying out forced circulation heat treatment by using special quenching oil in the heat treatment procedure, wherein the heat treatment technology reduces a temperature difference of the casting during the heat treatment process and increases the hardness and the toughness of the product; and after heat treatment, detecting the hardness and the appearance of the finished product, and then putting the product in storage.
Description
Technical field:
The present invention relates to a kind of liner plate, relate in particular to a kind of wet grinding mill lining board special.
Background technology:
Existing ball mill by wet process liner plate exists noble metal molybdenum in production process, nickel, copper add-on many, causes production cost high; It is unreasonable that the product material is selected, and Segregation of Chemical Composition is serious, metallic crystal coarse grains, skewness, grain boundary structure are unstable; Matrix is carbonized thing and isolates, and the intergranular potential difference is large, and chemical corrosion and galvanic etching are serious; Thermal treatment process technology does not pass a test, and causes the shortcomings such as toughness of products is poor, hardness is low, poor corrosion resistance, wearing and tearing are large, work-ing life is short.Existing liner plate production technique all adopts electrosmelting simultaneously, the sand mold moulding process, and thermal treatment adopts quenching oil, hardening liquid, wind mist quench treatment, makes the toughness of product and hardness not strong.Liner material quality is high mangaenese steel, steel alloy, rich chromium cast iron etc., and this type of material, to the research that performs an analysis of the operating mode of wet-type ball mill, is not suitable with under the wet method environment and uses.
Summary of the invention:
The present invention be directed to the deficiencies in the prior art, propose a kind of wet grinding mill lining board special, wet grinding mill lining board special production cost of the present invention is low, long service life, good toughness, impact value is high and hardness is high.
Technical scheme of the present invention:
The invention adopts electrosmelting, rationally nurses one's health the chemical composition proportioning, for different acid, alkaline environments, adopts respectively different carbon contents, adds corrosion resistant alloying element chromium, copper etc., has reduced the noble metals such as nickel, molybdenum and has used; Toughness and the wear resisting property of product have been improved.The molten iron of coming out of the stove adopts the yttrium base to give birth to the rare earth processing of go bad, purifying molten iron, minimizing impurity; The sand mold casting; Adjust thermal treatment process, used special hardening oil to carry out pump circulation thermal treatment, reduced the temperature head of foundry goods in heat treatment process, improved toughness of products and hardness.
The invention has the beneficial effects as follows:
1, select rational product material strict production control technique and chemical composition according to the burn into abrasion mechanism of liner plate in the wet method environment, reduce the add-on of expensive molybdenum, nickel, copper, reduce production costs.
2, adopt the gadolinium based heavy rare earths to molten iron processings of go bad, crystal grain thinning, purify the strengthening crystal boundary, and During crushing of carbides reduces the isolate work of carbide to matrix, the segregation of minimizing Grain Boundary Chemistry composition, intensity, toughness, the hardness of raising material;
3, adjust the thermal treatment granulation of thermal treatment process, promotion eutectic carbides, improve comprehensive mechanics and the mechanical property of material.
4, make the product material there is higher hardness, toughness and corrosion resisting property, make the wear-resistant, corrosion-resistant and shock-resistant in the best fit scope of product, make liner plate toughness, wear resisting property on average improve 10-30%.
The accompanying drawing explanation:
Fig. 1: be production technological process of the present invention
Embodiment:
By starting material test the metering after, put into electric furnace and carry out melting, carry out chemical analysis simultaneously, rationally nurse one's health the chemical composition proportioning, for different acid, alkaline environments, adopt respectively different carbon contents, add corrosion resistant alloying element chromium, copper etc., improved toughness and the wear resisting property of product.After modified scarfing cinder, the molten iron of coming out of the stove adopts the yttrium base to give birth on rare processings of go bad, purifying molten iron, reduces impurity, and the molten iron after the processing of going bad is carried out to chemical analysis, after by the sand mold casting; Enter heat treatment step after sand removal polishing check, thermal treatment is used special hardening oil to carry out pump circulation thermal treatment, and this thermal treatment process has reduced the temperature head of foundry goods in heat treatment process, has improved toughness of products and hardness; After thermal treatment, finished product is carried out to the detection of hardness and outward appearance, rear product warehousing.
Product chemical composition, toughness (impact value) and hardness number in the invention process:
One, sour environment:
Chemical composition: C:1.5-2.5%, Si:0.3-1.5%, Mn:0.7-1.4%, Cr:2.0-5.0%, Cu::0-2.0%P :≤0.1, S :≤0.1; Gadolinium based heavy rare earths 0.5-0.6%.
Impact value: 8-15J/cm2 hardness: 45HRC-65HRC
Two, alkalescence environment:
Chemical composition: C:2.0-3.2%, Si:0.3-1.5%, Mn:0.7-1.4%, Cr:2.0-8.0%, Cu::0-2.0%P :≤0.1, S :≤0.1; Gadolinium based heavy rare earths 0.5-0.6%.
Impact value: 8-15J/cm2 hardness: 45HRC-65HRC
In sum, the present invention as specification sheets and diagramatic content, repeatedly tests, and from the test effect, provable the present invention can accomplish the end in view, and enterprise is reduced production costs, and provides the high-quality liner plate to have very practical effect.Above illustrated embodiment only is used for conveniently illustrating the present invention, not the present invention is done to any pro forma restriction, have and usually know the knowledgeable in technical field under any, if in the scope that does not break away from technical characterictic provided by the present invention, utilize disclosed technology contents to make the local equivalent embodiment that changes or modify, and do not break away from technical characterictic content of the present invention, all belong to the scope of the technology of the present invention feature.
Claims (4)
1. a wet grinding mill lining board special, after its production technique is measured for starting material are tested, put into electric furnace and carry out melting, carry out chemical analysis simultaneously, rationally conditioning chemical composition proportioning, for different acid, alkaline environments, adopt respectively different carbon contents, add corrosion resistant alloying element chromium, copper etc.; After modified scarfing cinder, the molten iron of the coming out of the stove processing of going bad, purifying molten iron, reduce impurity, and the molten iron after rotten the processing is carried out to chemical analysis, after by the sand mold casting; Finished product is carried out to the detection of hardness and outward appearance, rear product warehousing after entering heat treatment step thermal treatment after sand removal polishing check;
2. rotten processing according to claim 1, is characterized in that adopting the yttrium base to give birth to the rare earth processing of going bad;
3. heat treatment step according to claim 1, is characterized in that thermal treatment use special hardening oil carries out pump circulation thermal treatment;
4. acidity according to claim 1, alkaline environment is characterized in that its index is:
A, sour environment:
Chemical composition: C:1.5-2.5%, Si:0.3-1.5%, Mn:0.7-1.4%, Cr:2.0-5.0%, Cu::0-2.0%
P :≤0.1, S :≤0.1; Gadolinium based heavy rare earths 0.5-0.6%.
Impact value: 8-15J/cm2 hardness: 45HRC-65HRC
B, alkalescence environment:
Chemical composition: C:2.0-3.2%, Si:0.3-1.5%, Mn:0.7-1.4%, Cr:2.0-8.0%, Cu::0-2.0%
P :≤0.1, S :≤0.1; Gadolinium based heavy rare earths 0.5-0.6%.
Impact value: 8-15J/cm2 hardness: 45HRC-65HRC
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101490901A CN103422010A (en) | 2012-05-15 | 2012-05-15 | Wet mill dedicated liner plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101490901A CN103422010A (en) | 2012-05-15 | 2012-05-15 | Wet mill dedicated liner plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103422010A true CN103422010A (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101490901A Pending CN103422010A (en) | 2012-05-15 | 2012-05-15 | Wet mill dedicated liner plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757529A (en) * | 2014-02-07 | 2014-04-30 | 贵州省遵义市永力机电安装有限公司 | Wet and dry general multi-element alloy lining plate for ball mill |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033652A (en) * | 1987-12-24 | 1989-07-05 | 湖南省冶金材料研究所 | A kind of " Pugai producer blade cast iron alloy and production technique |
| CN1148633A (en) * | 1996-05-06 | 1997-04-30 | 广州有色金属研究院 | Medium-chrome silicone anti-corrosion wear-resisting cast iron and mfg. method thereof |
| CN101260497A (en) * | 2008-04-25 | 2008-09-10 | 北京工业大学 | Boron-containing high-chromium abrasion-proof cast iron and preparation method thereof |
| CN102534356A (en) * | 2012-02-13 | 2012-07-04 | 驻马店市永诚耐磨材料有限公司 | Wear-resistant white cast iron material and preparation method thereof |
-
2012
- 2012-05-15 CN CN2012101490901A patent/CN103422010A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033652A (en) * | 1987-12-24 | 1989-07-05 | 湖南省冶金材料研究所 | A kind of " Pugai producer blade cast iron alloy and production technique |
| CN1148633A (en) * | 1996-05-06 | 1997-04-30 | 广州有色金属研究院 | Medium-chrome silicone anti-corrosion wear-resisting cast iron and mfg. method thereof |
| CN101260497A (en) * | 2008-04-25 | 2008-09-10 | 北京工业大学 | Boron-containing high-chromium abrasion-proof cast iron and preparation method thereof |
| CN102534356A (en) * | 2012-02-13 | 2012-07-04 | 驻马店市永诚耐磨材料有限公司 | Wear-resistant white cast iron material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李固成等: ""无钼镍高铬合金铸铁耐磨衬板的研制与应用"", 《铸造》, vol. 57, no. 4, 30 April 2008 (2008-04-30), pages 394 - 397 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757529A (en) * | 2014-02-07 | 2014-04-30 | 贵州省遵义市永力机电安装有限公司 | Wet and dry general multi-element alloy lining plate for ball mill |
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Application publication date: 20131204 |