CN101643825A - Medium chromium multielement alloy cast ball and cast segment oil quenching heat treatment technique - Google Patents
Medium chromium multielement alloy cast ball and cast segment oil quenching heat treatment technique Download PDFInfo
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Abstract
The invention discloses a medium chromium multielement alloy cast ball and cast segment oil quenching heat treatment technique, wherein the contained components are as follow: 1.7-3.1 of C, 0.3-1.0 ofSi, 0.3-1.0 of Mn, 5-10 of Cr, less than or equal to 0.09 of S, less than or equal to 0.08 of P, and trace of Mo, Ni, Nb, Cu, Y, B, V and Ti; cast medium chromium multielement alloy cast ball and cast segment are heated to 930-1050 DEG C, the temperature is kept for 1.5-3h followed by oil cooling treatment, when the surface temperature of medium chromium multielement alloy cast ball and cast segment are decreased to 100-250 DEG C, the product is moved off the oil tank to halt oil quenching, and the product is poured into an iron bucket, when the iron bucket is full the product is put into a tempering furnace for tempering treatment. The invention solves the problem of poor use quality as cast condition of the medium chromium multielement alloy cast ball and cast segment, in addition, theproduct has no crack, the hardness, toughness and antifatigue impact service life is improved, consumption is reduced, and the ball fragmentation rate is low, thus saving quantities of chromium alloyresource for the nation and reducing operation cost for the user.
Description
Technical field:
The present invention relates to the thermal treatment process that Chrome metal powder cast steel and chrome alloy cast iron quench, relate in particular to a kind of middle chromium multielement alloy cast ball, a casting section oil quenching thermal treatment process.
Technical background:
Chrome metal powder casting ball, casting section are a kind of grinding mediums that is widely used in powder technologies such as cement, thermoelectricity, magnetic, ore dressing, for the hardness that improves Chrome metal powder casting ball, casting section, toughness, comprehensive mechanical performance such as anti-corrosion, reduce consumption in use, novel process is not only being explored and researched and developed in each manufacturing enterprise and R﹠D institution all, and therefore selecting proper heat treatment technology is to improve the key of Chrome metal powder casting ball, casting section.
At present, chromium alloy casting ball, the casting section of producing both at home and abroad are divided into three kinds: high-chromium alloy casting ball, casting section, middle Chrome metal powder casting ball, casting section, low chrome casting ball, casting section.Chinese patent 200410041736X has announced high-chromium alloy casting ball oil quenching technology, by the casting of the high-chromium alloy after this art breading ball, casting section, hardness height, but product performance instability, and the alloy content height of high-chromium alloy casting ball, casting section, the cost height, chromium resource consumption is big; Low chrome is cast ball, casting section alloy content is low, and cost is low, but product hardness is low, and impelling strength is low, and comprehensive mechanical performance is relatively poor, the customer using cost height; In Chrome metal powder casting ball, casting section cost moderate, handle but all just product is carried out a low-temperaturetempering both at home and abroad at present, as-cast structure can not get changing, its hardness, toughness, comprehensive mechanical performance such as resistance to wear are all not ideal enough.For this reason, must seek a kind of new heat treatment technics, with hardness, impelling strength and the comprehensive mechanical performance of Chrome metal powder casting ball, casting section in improving, reduce production costs, save alloy resource.
Summary of the invention:
The objective of the invention is in order to remedy the deficiency of defectiveness, a kind of oil quenching thermal treatment process that is applicable to middle chromium multielement alloy cast ball, casting section is provided, adopt middle chromium multielement alloy cast ball, its hardness height of casting section, toughness and the good combination property of this art breading, the cost performance height, not only be that country saves a large amount of Chrome metal powder resources, also reduced running cost for the user.
The present invention is achieved through the following technical solutions:
Chromium multielement alloy cast ball, casting section oil quenching thermal treatment process in a kind of, the weight percent that contains composition in described middle chromium multielement alloy cast ball, the casting section is:
C:1.7-3.1, Si:0.3-1.0, Mn:0.3-1.0, Cr:5-10, S :≤0.09, P :≤0.08, matrix is iron; It is characterized in that: chromium multielement alloy cast ball, casting section adopt the oil quenching thermal treatment process in described, and its concrete processing step comprises:
A. chromium multielement alloy cast ball, casting section are quantitatively packed in the special-purpose quenching frame in the as cast condition that will just take out from mold, then are put in and heat in the quenching furnance, be heated to 930-1050 ℃ after, be incubated 1.5 hours-3.5 hours;
B. the middle chromium multielement alloy cast ball behind the heat tracing, casting section are poured in the quenching shaking table, sunk in the quenching oil with the quenching shaking table then,, make casting ball, casting section roll freely, and constantly stir oil sump along with the moving up and down and shaking of quenching shaking table;
C. treat middle chromium multielement alloy cast ball, when casting section surface temperature drops to 100-250 ℃, product leaves oil sump, stops oil cooling, and product is poured in the metal bucket;
D. after treating that metal bucket fills with, middle chromium multielement alloy cast ball, casting section are put into tempering stove and carried out temper, be heated to 180-450 ℃, and came out of the stove after being incubated 6 hours-10 hours, put into holding pit and carry out slow cooling;
E. the soaking time that middle chromium multielement alloy cast ball, casting section enter holding pit should be not less than 6 hours, then goes out the hole and stacks.
Chromium multielement alloy cast ball, casting section oil quenching thermal treatment process in described, it is characterized in that: described quenching oil is an isothermal quenching oil, the kinematic viscosity 40-120mm of quenching oil in the time of 40 ℃
2/ s, flash-point are at 170-240 ℃, and oily temperature control is at 50-130 ℃.
Chromium multielement alloy cast ball, casting section oil quenching thermal treatment process in described, it is characterized in that: described oily temperature control is at 50-130 ℃.
Chromium multielement alloy cast ball, casting section oil quenching thermal treatment process in described is characterized in that: during chromium multielement alloy cast ball, casting section are quantitatively packed special-purpose quenching frame in described, then be put in the quenching furnance and heat, take the staged heating means in the heat-processed.
Chromium multielement alloy cast ball, casting section oil quenching thermal treatment process in described, it is characterized in that: in the tempering stove, after being heated to the tempering temperature point of setting, temperature difference fluctuation should be less than 10 ℃ in the tempering stove.
Chromium multielement alloy cast ball, casting section oil quenching thermal treatment process in described, it is characterized in that: chromium multielement alloy cast ball, casting section use the yttrium-base heavy rare earth alterant to handle in process of production in described.
Chromium multielement alloy cast ball, a casting section oil quenching thermal treatment process in described is characterized in that: chromium multielement alloy cast ball in described, the furnace temperature when the casting section is gone into quenching furnance should≤450 ℃.
Chromium multielement alloy cast ball, casting section oil quenching thermal treatment process in described, it is characterized in that: the time that chromium multielement alloy cast ball, casting section sink to oil sump from coming out of the stove in the quenching furnance in described was controlled in 2 minutes.
For guaranteeing the homogeneity of chromium multielement alloy cast ball in the oil quenching, casting section, the present invention has adopted the automated control technology of special tooling and full technological process, temperature, each warm area soaking time, oil temperature, product surface temperature and the optimum parameter of cool time in the strict control stove, make casting ball, casting section when quenching, roll freely evenly cooling.Adopt the strong cold mode of plate-type heat exchanger, oily temperature control in the technology allowed band, and has been equipped with oily detection system, guaranteed the optimum technology parameter of quenching oil.
Advantage of the present invention is:
1. chromium multielement alloy cast ball, a casting section oil quenching during employing the present invention can realize have solved middle chromium multielement alloy cast ball, the not good enough problem of casting section as cast condition functional quality.
2. the middle chromium multielement alloy cast ball, the every technical indicator of casting section that adopt the present invention to handle have all been created new advanced international standard, product flawless wherein, hardness reaches 62-66HRC, and antifatigue is impacted the life-span up to more than 30000 times, and heart portion and surface hardness be poor≤2HRC.
3. middle chromium multielement alloy cast ball, casting section quality index and the high-chromium alloy casting ball, the casting section that adopt the present invention to handle are equal, but cost is cast ball with high-chromium alloy, the casting section is compared and reduced by 10%.
4. the middle chromium multielement alloy cast ball, the casting section that adopt the present invention to handle are compared with middle chromium multielement alloy cast ball, the casting section of existing known direct tempering technical finesse, hardness improves 10-15HRC, toughness improves more than 100%, antifatigue is impacted the life-span and is improved more than 150%, more than 70%, chip index was extremely low under use consumed.
5. the middle chromium multielement alloy cast ball, the casting section use cost that adopt the present invention to handle are low, the cost performance height.
6. adopt the present invention to be applicable to middle chromium multielement alloy cast ball, casting section in oily medium the quench treatment of ￠ below 120.
7. adopt the present invention to be applicable to various high-temperature heater quench treatment.
Description of drawings:
Accompanying drawing is the synoptic diagram of quenching frame among the present invention.
Embodiment:
Chromium multielement alloy cast ball, casting section oil quenching thermal treatment process in a kind of, the weight percent that contains composition in described middle chromium multielement alloy cast ball, the casting section is:
C:1.7-3.1, Si:0.3-1.0, Mn:0.3-1.0, Cr:5-10, S :≤0.09, P :≤0.08, matrix is iron; Mo Ni Nb Cu Y B V Ti is a trace;
A. chromium multielement alloy cast ball in the as cast condition, casting section are quantitatively packed in the special-purpose quenching frame, then are put in the quenching furnance and heat, be heated to 930-1050 ℃ after, be incubated 1.5 hours-3.5 hours;
B. the middle chromium multielement alloy cast ball behind the heat tracing, casting section are poured in the quenching shaking table, sunk in the quenching oil with the quenching shaking table then,, make casting ball, casting section roll freely, and constantly stir oil sump along with the moving up and down and shaking of quenching shaking table;
In the oil quenching process: the kinematic viscosity of quenching oil is controlled at 40-120mm
2/ s (kinematic viscosity of oil temperature in the time of 40 ℃), flash-point (opening) is controlled at 170-240 ℃, the oil temperature control is at 50-130 ℃, central chromium multielement alloy cast ball, casting section are gone into before the oil, should heat quenching oil earlier, when oily temperature is higher than the temperature of processing requirement, board-like oil-to-water heat exchanger is opened automatically, oil is carried out cold by force, when oily temperature was lower than the temperature of processing requirement, board-like oil-to-water heat exchanger stopped automatically;
C. treat middle chromium multielement alloy cast ball, when casting section surface temperature drops to 100-250 ℃, product leaves oil sump, stops oil cooling, stops oil cooling, and product is poured in the metal bucket;
D. after treating that metal bucket fills with, put into tempering stove and carry out temper,, be heated to 180-450 ℃ (in the stove temperature difference fluctuation should less than 5 ℃), and came out of the stove after being incubated 6 hours-10 hours, put into holding pit and carry out slow cooling middle chromium multielement alloy cast ball, casting section.
E. the soaking time that middle chromium multielement alloy cast ball, casting section enter holding pit should then go out the hole and stack more than or equal to 6 hours.
F. for guaranteeing the quality of quenching oil, to detect the quenching oil of new buying, taking regular detection with quenching oil.
The quenching frame 1 of described dress casting ball, casting section is the high temperature steel that casting forms, its profile is a rectangular parallelepiped, side plate 4 and base plate 5 are equipped with air-vent 2 all around, quenching frame 1 mid-way is provided with interchanger 3, and interchanger 3 is a bloom, by the mode of welding interchanger 3 is connected with quenching frame 1 bottom, around the interchanger 3 and top is provided with the heat exchange hole 2 of hollow out, thereby make fully convection current of hot gas flow, product is heated evenly, quick heating.
Claims (8)
1, chromium multielement alloy cast ball, a casting section oil quenching thermal treatment process in a kind of, the weight percent that contains composition in described in the chromium multielement alloy cast ball, casting section is:
C:1.7-3.1, Si:0.3-1.0, Mn:0.3-1.0, Cr:5-10, S :≤0.09, P :≤0.08, matrix is iron; It is characterized in that: chromium multielement alloy cast ball, casting section adopt the oil quenching thermal treatment process in described, and its concrete processing step comprises:
A. chromium multielement alloy cast ball, casting section are quantitatively packed in the special-purpose quenching frame in the as cast condition that will just take out from mold, then are put in and heat in the quenching furnance, be heated to 930-1050 ℃ after, be incubated 1.5 hours-3.5 hours;
B. the middle chromium multielement alloy cast ball behind the heat tracing, casting section are poured in the quenching shaking table, sunk in the quenching oil with the quenching shaking table then,, make casting ball, casting section roll freely, and constantly stir oil sump along with the moving up and down and shaking of quenching shaking table;
C. treat middle chromium multielement alloy cast ball, when casting section surface temperature drops to 100-250 ℃, product leaves oil sump, stops oil cooling, and product is poured in the metal bucket;
D. after treating that metal bucket fills with, middle chromium multielement alloy cast ball, casting section are put into tempering stove and carried out temper, be heated to 180-450 ℃, and came out of the stove after being incubated 6 hours-10 hours, put into holding pit and carry out slow cooling;
E. the soaking time that middle chromium multielement alloy cast ball, casting section enter holding pit should be not less than 6 hours, then goes out the hole and stacks.
2, middle chromium multielement alloy cast ball according to claim 1, a casting section oil quenching thermal treatment process, it is characterized in that: described quenching oil is an isothermal quenching oil, the kinematic viscosity 40-120m m of quenching oil in the time of 40 ℃
2/ s, flash-point are at 170-240 ℃, and oily temperature control is at 50-130 ℃.
3, middle chromium multielement alloy cast ball according to claim 2, a casting section oil quenching thermal treatment process, it is characterized in that: described oily temperature control is at 50-130 ℃.
4, middle chromium multielement alloy cast ball according to claim 1, a casting section oil quenching thermal treatment process, it is characterized in that: described middle chromium multielement alloy cast ball, casting section are quantitatively packed in the special-purpose quenching frame, then be put in the quenching furnance and heat, take the staged heating means in the heat-processed.
5, middle chromium multielement alloy cast ball according to claim 1, a casting section oil quenching thermal treatment process, it is characterized in that: in the tempering stove, after being heated to the tempering temperature point of setting, temperature difference fluctuation should be less than 10 ℃ in the tempering stove.
6, according to claim 1 described in chromium multielement alloy cast ball, a casting section oil quenching thermal treatment process, it is characterized in that: chromium multielement alloy cast ball, casting section use the yttrium-base heavy rare earth alterant to handle in process of production in described.
7, according to claim 1 described in chromium multielement alloy cast ball, a casting section oil quenching thermal treatment process, it is characterized in that: chromium multielement alloy cast ball in described, the furnace temperature when the casting section is gone into quenching furnance should≤450 ℃.
8, according to claim 1 described middle chromium multielement alloy cast ball, a casting section oil quenching thermal treatment process, it is characterized in that: chromium multielement alloy cast ball, a casting period of sinking to oil sump from coming out of the stove in the quenching furnance were controlled in 2 minutes in described.
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| CN2009101448014A CN101643825B (en) | 2009-09-04 | 2009-09-04 | Medium chromium multielement alloy cast ball and cast segment oil quenching heat treatment technique |
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| CN101892374A (en) * | 2010-07-27 | 2010-11-24 | 中钢集团邢台机械轧辊有限公司 | Method for performing heat treatment on high-hardness semisteel roll |
| CN102399533A (en) * | 2011-09-26 | 2012-04-04 | 宁国市东方碾磨材料有限责任公司 | Wear-resistant and corrosion-resistant nano-abrasive material and preparation method thereof |
| CN102401559A (en) * | 2011-11-28 | 2012-04-04 | 安徽省宁国新宁实业有限公司 | Automatic box-type heat treatment equipment |
| CN102534353A (en) * | 2011-12-17 | 2012-07-04 | 铜陵市明诚铸造有限责任公司 | Low-chromium multi-component alloy cast ball and preparation method thereof |
| CN102560017A (en) * | 2011-12-17 | 2012-07-11 | 铜陵市镜铁粉厂 | Oil quenching heat treatment process for high-hardness low-chromium multicomponent alloy casting ball |
| CN102560018A (en) * | 2011-12-17 | 2012-07-11 | 铜陵市镜铁粉厂 | Oil quenching heat treatment process for high-hardness low-chromium multicomponent alloy casting ball |
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| CN102560019A (en) * | 2011-12-17 | 2012-07-11 | 铜陵市镜铁粉厂 | Oil quenching heat treating process for low chrome multielement alloy cast balls |
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| CN104152821A (en) * | 2014-07-16 | 2014-11-19 | 安徽省三方耐磨股份有限公司 | Multicomponent alloy cast ball |
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| CN106001522A (en) * | 2016-06-06 | 2016-10-12 | 含山县朝霞铸造有限公司 | Cooling pool convenient to extract castings |
| CN107779786A (en) * | 2017-10-23 | 2018-03-09 | 宁国市正兴耐磨材料有限公司 | A kind of wear-resistant ball and its preparation technology |
| CN112481463A (en) * | 2020-10-27 | 2021-03-12 | 甘肃酒钢集团西部重工股份有限公司 | Heat treatment method of water-quenched phi 60mm and below high-chromium cast iron grinding ball |
| CN113373294A (en) * | 2021-04-22 | 2021-09-10 | 宁国市开源电力耐磨材料有限公司 | Heat treatment process of high-chromium alloy cast ball |
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- 2009-09-04 CN CN2009101448014A patent/CN101643825B/en not_active Expired - Fee Related
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| CN101892374B (en) * | 2010-07-27 | 2012-10-03 | 中钢集团邢台机械轧辊有限公司 | Method for performing heat treatment on high-hardness semisteel roll |
| CN101892374A (en) * | 2010-07-27 | 2010-11-24 | 中钢集团邢台机械轧辊有限公司 | Method for performing heat treatment on high-hardness semisteel roll |
| CN102399533A (en) * | 2011-09-26 | 2012-04-04 | 宁国市东方碾磨材料有限责任公司 | Wear-resistant and corrosion-resistant nano-abrasive material and preparation method thereof |
| CN102401559A (en) * | 2011-11-28 | 2012-04-04 | 安徽省宁国新宁实业有限公司 | Automatic box-type heat treatment equipment |
| CN102560229B (en) * | 2011-12-17 | 2013-11-13 | 铜陵市镜铁粉厂 | Low chrome multielement alloy cast ball and preparing method thereof |
| CN102560017B (en) * | 2011-12-17 | 2014-05-07 | 铜陵市镜铁粉厂 | Oil quenching heat treatment process for high-hardness low-chromium multicomponent alloy casting ball |
| CN102560229A (en) * | 2011-12-17 | 2012-07-11 | 铜陵市镜铁粉厂 | Low chrome multielement alloy cast ball and preparing method thereof |
| CN102560019A (en) * | 2011-12-17 | 2012-07-11 | 铜陵市镜铁粉厂 | Oil quenching heat treating process for low chrome multielement alloy cast balls |
| CN102560017A (en) * | 2011-12-17 | 2012-07-11 | 铜陵市镜铁粉厂 | Oil quenching heat treatment process for high-hardness low-chromium multicomponent alloy casting ball |
| CN102560018A (en) * | 2011-12-17 | 2012-07-11 | 铜陵市镜铁粉厂 | Oil quenching heat treatment process for high-hardness low-chromium multicomponent alloy casting ball |
| CN102534353A (en) * | 2011-12-17 | 2012-07-04 | 铜陵市明诚铸造有限责任公司 | Low-chromium multi-component alloy cast ball and preparation method thereof |
| CN102534353B (en) * | 2011-12-17 | 2014-04-02 | 铜陵市明诚铸造有限责任公司 | Low-chromium multi-component alloy cast ball and preparation method thereof |
| CN102560018B (en) * | 2011-12-17 | 2014-05-07 | 铜陵市镜铁粉厂 | Oil quenching heat treatment process for high-hardness low-chromium multicomponent alloy casting ball |
| CN103215413A (en) * | 2013-04-10 | 2013-07-24 | 江苏亚太安信达铝业有限公司 | Quenching box |
| CN103215413B (en) * | 2013-04-10 | 2014-08-13 | 江苏亚太安信达铝业有限公司 | Quenching box |
| CN103757521A (en) * | 2013-12-13 | 2014-04-30 | 芜湖金鹰机械科技开发有限公司 | Multi-element alloy casting ball material and preparation method thereof |
| CN104152821A (en) * | 2014-07-16 | 2014-11-19 | 安徽省三方耐磨股份有限公司 | Multicomponent alloy cast ball |
| CN104152788A (en) * | 2014-08-01 | 2014-11-19 | 宁国市宁武耐磨材料有限公司 | Impact-resistant high-hardness wear-resistant ball |
| CN104846173A (en) * | 2015-05-05 | 2015-08-19 | 柳州金特新型耐磨材料股份有限公司 | Heat treatment method of wear-resistant steel bottom plate for loader |
| CN106001522A (en) * | 2016-06-06 | 2016-10-12 | 含山县朝霞铸造有限公司 | Cooling pool convenient to extract castings |
| CN107779786A (en) * | 2017-10-23 | 2018-03-09 | 宁国市正兴耐磨材料有限公司 | A kind of wear-resistant ball and its preparation technology |
| CN112481463A (en) * | 2020-10-27 | 2021-03-12 | 甘肃酒钢集团西部重工股份有限公司 | Heat treatment method of water-quenched phi 60mm and below high-chromium cast iron grinding ball |
| CN113373294A (en) * | 2021-04-22 | 2021-09-10 | 宁国市开源电力耐磨材料有限公司 | Heat treatment process of high-chromium alloy cast ball |
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