CN102719748A - Lining plate of tube mill and method for producing the same - Google Patents
Lining plate of tube mill and method for producing the same Download PDFInfo
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- CN102719748A CN102719748A CN2011100784320A CN201110078432A CN102719748A CN 102719748 A CN102719748 A CN 102719748A CN 2011100784320 A CN2011100784320 A CN 2011100784320A CN 201110078432 A CN201110078432 A CN 201110078432A CN 102719748 A CN102719748 A CN 102719748A
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- tube mill
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Abstract
A lining plate of a tube mill and a method for producing the same are provided. The material of the lining plate basically comprises the following constituents: by weight, 0.34%~0.38% of carbon, 0.7%~1.0% of silicon, 0.5%~0.9% of manganese, 5.0%~7.0% of chromium, 0.2%~0.3% of copper, 0.05%~0.12% of vanadium, no more than 0.025% of sulfur, no more than 0.030% of phosphorus and 0.01 %~0.03% of tombarthite with the balance being iron. The producing method of the lining plate comprises three steps of selecting the constituents of the lining plate for casting the lining plate, performing oil quenching on the cast lining plate, and tempering the lining plate after oil quenching. The lining plate of a tube mill has the characteristics of low cost, good toughness, high hardness, low hardness difference of sections and high wear resistance.
Description
Technical field
The present invention relates to the tuber grinder field, especially relevant with tube mill lining board chemical ingredients and method of manufacture thereof.
Background technology
Tuber grinder is widely used in industries such as cement, mine; It uses industrial and mineral comparatively abominable, and impact, the grinding of tube mill lining board because of receiving grinding medium and material for a long time is so require it to have excellent comprehensive performances such as certain toughness and high-wearing feature; In addition; If will obtain the favor in market, require it cheap again, practical value is high.
Present most of tube mill lining board is main with high mangaenese steel, and part is used steel alloy.The high mangaenese steel initial hardness is low, lean on HI high impact to produce work hardening and guarantee wear resistance, and most of liner plate shock peening speed is lower than the rate of wear of liner plate; So the liner plate wear resistance also can reduce greatly; In addition, the ys of high mangaenese steel is low, is prone to produce viscous deformation in the use; Make the workpiece life-span short, and the dismounting and change difficulty.Big complex alloy steel liner plate metallographic structure is a tempered martensite, has higher hardness and H.T., reaches the requirement than high-wearing feature; But higher requirement is difficult to reach to wear resistance for the client, and particularly the aside-liner degree of wear is more serious than liner plate, and this just need the material higher than liner plate wear resistance satisfies the requirement of aside-liner wear resistance; Otherwise; In the use of a whole set of lining board of grinder, shell liner also can use often, and aside-liner need have been changed; Make whole lining board of grinder and bring repeatedly shutdown to change aside-liner to the client, influenced client's production efficiency because work-ing life is different.All adopt heat treatment mode air-cooled or that mist is cold in the at present more middle chrome lining; Production process cooling control is inhomogeneous; Quality product is difficult for guaranteeing, also is difficult for stably manufactured, because employing is air-cooled or mist is cold; So carbon content is higher but also add valuable alloy such as molybdenum, nickel etc. in the chemical ingredients, product cost is also higher.
Summary of the invention
The technical problem that the present invention will solve is to overcome the deficiency that above-mentioned prior art exists, and a kind of tube mill lining board and method of manufacture thereof are provided, the reducing cost of this tube mill lining board, and good toughness, hardness is high, and the section difference of hardness is little, and wear resistance is high.
In order to solve the problems of the technologies described above; The present invention provides a kind of tube mill lining board, and the material of this liner plate comprises following component by mass percent basically: carbon: silicon 0.34%～0.38%: manganese 0.7%～1.0%: chromium 0.5%～0.9%: copper 5.0%～7.0%: vanadium 0.2%～0.3%: sulphur 0.05%～0.12%: phosphorus≤0.025%: rare earth≤0.030%: 0.01%～0.03%, surplus is an iron.
In order to solve the problems of the technologies described above; The present invention also provides a kind of method of manufacture of tube mill lining board; It comprises: step 1: choose following chemical components in mass percent: carbon: silicon 0.34%～0.38%: manganese 0.7%～0.9%: chromium 0.5%～0.9%: copper 5.0%～7.0%: vanadium 0.2%～0.3%: sulphur 0.05%～0.12%: phosphorus≤0.025% :≤0.030%, surplus is an iron; Casting liner plate adds the alterant processing of going bad in castingprocesses; Step 2: fluid origin liner plate is carried out oil quenching handle; Step 3: the liner plate to after the oil quenching processing carries out temper.
Further, said method of manufacture also comprises: the step that the liner plate after the temper in the step 3 is polished.
Further, said method of manufacture also comprises: the step of the liner plate after the polishing being carried out again a temper.
Further, said oil quenching treatment temperature is 950 ℃～970 ℃.
Further, the temperature of said temper is 240 ℃～250 ℃.
Further; Said alterant comprises: rare earth, silicon and magnesium, make that the basic chemical ingredients mass percent of liner plate after rotten the processing is: carbon: silicon 0.34%～0.38%: manganese 0.7%～1.0%: chromium 0.5%～0.9%: copper 5.0%～7.0%: vanadium 0.2%～0.3%: sulphur 0.05%～0.12%: phosphorus≤0.025%: rare earth≤0.030%: 0.01%～0.03%, surplus is an iron.
Useful technique effect of the present invention is: the present invention is through the optimization design to tube mill lining board chemical ingredients and thermal treatment process; Make the liner plate production need not valuable iron alloy; Cost is low, and has the advantages that good toughness, hardness are high, the section difference of hardness is little, wear resistance is excellent, satisfies the requirement that the user is low to the foundry goods price, wear resistance is good; The wear resistance of this liner plate is 1.5 times of common steel alloy liner plate, has remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 is the process flow sheet of tube mill lining board method of manufacture of the present invention.
Embodiment
The material of this tube mill lining board comprises following component by mass percent basically: carbon (C): silicon (Si) 0.34%～0.38%: manganese (Mn) 0.7%～1.0%: chromium (Cr) 0.5%～0.9%: copper (Cu) 5.0%～7.0%: vanadium (V) 0.2%～0.3%: sulphur (S) 0.05%～0.12%: phosphorus (P)≤0.025%: rare earth (RE)≤0.030%: 0.01%～0.03%, surplus is iron (Fe).
Consult Fig. 1; The method of manufacture of this liner plate comprises the steps: step 1: choose following chemical components in mass percent: carbon: silicon 0.34%～0.38%: manganese 0.7%～1.0%: chromium 0.5%～0.9%: copper 5.0%～7.0%: vanadium 0.2%～0.3%: sulphur 0.05%～0.12%: phosphorus≤0.025% :≤0.030%, surplus is an iron; Casting liner plate, and in castingprocesses, add the alterant processing of going bad; Step 2: the liner plate after the casting is carried out oil quenching handle; Step 3: the liner plate to after the oil quenching processing carries out temper.
Wherein, step 1 mesometamorphism agent component comprises: rare earth (RE), silicon (Si), magnesium (Mg) and iron (Fe), the mass percent of its component is: rare earth: silicon 24%～26%: magnesium 36%～40%: 3%～5%, surplus is an iron.
Final chemical ingredients mass percent through rotten processing rear lining plate is following basically: carbon (C): silicon (Si) 0.34%～0.38%: manganese (Mn) 0.7%～1.0%: chromium (Cr) 0.5%～0.9%: copper (Cu) 5.0%～7.0%: vanadium (V) 0.2%～0.3%: sulphur (S) 0.05%～0.12%: phosphorus (P)≤0.025%: rare earth (RE)≤0.030%: 0.01%～0.03%, surplus is iron (Fe).The component of having ignored magnesium in the final chemical ingredients of this liner plate, this is that it compares other components contents, can ignore owing to the content of magnesium in the alterant is very low.
When choosing the tube mill lining board chemical ingredients in the step 1, chromium alloyed steel in the carbon in the employing does not add valuable alloy molybdenum (Mo), nickel (Ni) etc., only adds a spot of copper and micro-vanadium, so reduced casting cost.Copper has the effect of solution strengthening, and it is similar with nickel to be permitted many-sided effect.Vanadium is one of carbide forming element the strongest in the steel, and it has crystal grain thinning, improve the alligatoring temperature of steel when heating, reduce overheated tendency, reduce the effect of content of pearlite in alloy, and vanadium can also improve the stability of hardened steel tempered-hardness, improves impelling strength; In addition, when choosing chemical ingredients, also consider the carbon content proportioning, because chromium steel in this kind; After carbon content is greater than 0.34%, begin carbide precipitate, and along with the increase of carbon, carbide content increases obviously; Impelling strength significantly reduces, so select suitable carbon content to cooperate with the effective of respective alloy, the carbon content scope is dwindled; It is controlled in 0.34～0.38 scope, helps guaranteeing impelling strength more than 20 J/c ㎡, satisfy the requirement of liner plate impact flexible; It shall yet further be noted that the lower sulphur of control, phosphorus content, in castingprocesses, add the processing of going bad of the alterant contain rare earth, silicon, magnesium; Obtain the metallographic structure of martensite and dispersing carbide again through the thermal treatment of oil quenching, make liner plate hardness and metallographic structure even, not only high, the section even hardness of hardness; Have certain toughness, and because the existence of diffusion carbide in the metallographic structure, so wear resistance improves greatly; Correspondingly also improved the work-ing life of liner plate greatly; Reduce cost, improved the ratio of performance to price of liner plate foundry goods, improved the market competitiveness.
Oil quenching treatment temp in the step 2 is 950 ℃-970 ℃, and the temper temperature in the step 3 is 240 ℃-250 ℃.
Temper step in the step 3 comprises twice, after the tempering first time, carries out the polishing of foundry goods, so that in bruting process, discharge stress, carries out the tempering second time after the polishing again, and purpose is further to improve the toughness of product, thoroughly eliminates the stress of foundry goods simultaneously.
Tube mill lining board performance through above-mentioned treatment process production is: metallographic structure is tempered martensite and diffusion carbide, hardness HRC53～56, non-notch notched bar impact strength Ak>=20J/CM
2
Yet the above is merely preferable possible embodiments of the present invention, and unrestricted protection scope of the present invention, so the equivalent structure that all utilizations specification sheets of the present invention and accompanying drawing content have been done changes, all is included in protection scope of the present invention.
Claims (7)
1. tube mill lining board; It is characterized in that the material of liner plate comprises following component by mass percent basically: carbon: silicon 0.34%～0.38%: manganese 0.7%～1.0%: chromium 0.5%～0.9%: copper 5.0%～7.0%: vanadium 0.2%～0.3%: sulphur 0.05%～0.12%: phosphorus≤0.025%: rare earth≤0.030%: 0.01%～0.03%, surplus is an iron.
2. the method for manufacture of a tube mill lining board is characterized in that, comprising:
Step 1: choose following chemical components in mass percent: carbon: silicon 0.34%～0.38%: manganese 0.7%～0.9%: chromium 0.5%～0.9%: copper 5.0%～7.0%: vanadium 0.2%～0.3%: sulphur 0.05%～0.12%: phosphorus≤0.025% :≤0.030%, surplus is an iron; Casting liner plate adds the alterant processing of going bad in castingprocesses;
Step 2: fluid origin liner plate is carried out oil quenching handle;
Step 3: the liner plate to after the oil quenching processing carries out temper.
3. the method for manufacture of tube mill lining board as claimed in claim 2 is characterized in that, said method of manufacture also comprises: the step that the liner plate after the temper in the step 3 is polished.
4. the method for manufacture of tube mill lining board as claimed in claim 3 is characterized in that, said method of manufacture also comprises: the step of the liner plate after the polishing being carried out again a temper.
5. the method for manufacture of tube mill lining board as claimed in claim 2 is characterized in that, said oil quenching treatment temperature is 950 ℃～970 ℃.
6. like the method for manufacture of claim 2 or 4 described tube mill lining boards, it is characterized in that the temperature of said temper is 240 ℃～250 ℃.
7. the method for manufacture of tube mill lining board as claimed in claim 2; It is characterized in that; Said alterant comprises basically: rare earth, silicon and magnesium, the basic chemical ingredients mass percent of liner plate after rotten the processing is: carbon: silicon 0.34%～0.38%: manganese 0.7%～1.0%: chromium 0.5%～0.9%: copper 5.0%～7.0%: vanadium 0.2%～0.3%: sulphur 0.05%～0.12%: phosphorus≤0.025%: rare earth≤0.030%: 0.01%～0.03%, surplus is an iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100784320A CN102719748A (en) | 2011-03-30 | 2011-03-30 | Lining plate of tube mill and method for producing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100784320A CN102719748A (en) | 2011-03-30 | 2011-03-30 | Lining plate of tube mill and method for producing the same |
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| CN102719748A true CN102719748A (en) | 2012-10-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087856A (en) * | 2014-06-24 | 2014-10-08 | 宁国市正兴耐磨材料有限公司 | Liner plate for ball mill |
| CN104532130A (en) * | 2015-01-21 | 2015-04-22 | 北京科技大学 | High-strength and toughness anticorrosive lining plate for wet ball mill and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290765A (en) * | 1999-06-25 | 2001-04-11 | 日立金属株式会社 | Self lubricating piston ring material and piston ring for IC engine |
| CN1957101A (en) * | 2004-05-21 | 2007-05-02 | 工业钢克鲁梭公司 | Steel with high mechanical strength and wear resistance |
-
2011
- 2011-03-30 CN CN2011100784320A patent/CN102719748A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290765A (en) * | 1999-06-25 | 2001-04-11 | 日立金属株式会社 | Self lubricating piston ring material and piston ring for IC engine |
| CN1957101A (en) * | 2004-05-21 | 2007-05-02 | 工业钢克鲁梭公司 | Steel with high mechanical strength and wear resistance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087856A (en) * | 2014-06-24 | 2014-10-08 | 宁国市正兴耐磨材料有限公司 | Liner plate for ball mill |
| CN104532130A (en) * | 2015-01-21 | 2015-04-22 | 北京科技大学 | High-strength and toughness anticorrosive lining plate for wet ball mill and preparation method |
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Application publication date: 20121010 |