CN103008062A - Low-carbon high-chromium composite swing hammer - Google Patents
Low-carbon high-chromium composite swing hammer Download PDFInfo
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- CN103008062A CN103008062A CN 201210318527 CN201210318527A CN103008062A CN 103008062 A CN103008062 A CN 103008062A CN 201210318527 CN201210318527 CN 201210318527 CN 201210318527 A CN201210318527 A CN 201210318527A CN 103008062 A CN103008062 A CN 103008062A
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Abstract
The invention relates to a low-carbon high-chromium composite swing hammer. The low-carbon high-chromium composite swing hammer comprises a hammer head and a hammer handle, wherein the hammer handle is made of 40 Mn<2> low alloy steel, the hammer head is made of high-chromium alloy cast iron, the surface structure of a combined handle part between the hammer handle and the hammer head is of a nail shape, the hardness HRC (Rockwell Hardness C) of the hammer head is more than or equal to 60, the impact toughness ak of the hammer head is more than or equal to 6 J.cm<2>, the hardness HBW (Brinell Hardness W) of the hammer handle is 190-245, and the impact toughness ak of the hammer handle is 45 J.cm<2>. According to the low-carbon high-chromium composite swing hammer, the hitting part of a wear-resisting swing hammer has high hardness and certain toughness, the requirement on the wear-resisting property of the hammer head is met, the hammer handle has high toughness and certain hardness, and the use safety of the swing hammer is guaranteed.
Description
Technical field
The present invention relates to the production technical field for the wear-resisting pendulum on the large-scale hammer mill, relate in particular to a kind of low-carbon (LC), the compound pendulum of high chromium.
Background technology
Pendulum is the critical component of large-scale hammer mill, be widely used in the broken industries such as cement, mine, traffic, building materials, power plant, metallurgy, it is a kind of consumable accessory, annual because wearing and tearing expend a large amount of metal materials, the anti-wear performance of disintegrating machine pendulum and safety in utilization thereof are to estimate the important indicator of pendulum serviceability.Along with the development of crushing mechanism industry, increasing problem one after another and go out, material and the preparation technology thereof to wear-resisting pendulum has higher requirement such as the expansion in broken field, disintegrating apparatus maximization etc.For large-scale pendulum, how to design a kind of pendulum, both made the strike position of pendulum have high rigidity and certain toughness, the anti-wear performance that satisfies pendulum requires, makes again the installation position of pendulum to have high tenacity and certain hardness, guaranteeing the safety in utilization of pendulum, is problem to be solved by this invention.
Summary of the invention
The present invention provides a kind of under high and low impact condition in order to overcome the deficiency of above technology, and anti-wear performance and safety in utilization be good low-carbon (LC), the compound pendulum of high chromium all.
Technical scheme of the present invention is: low-carbon (LC), the compound pendulum of high chromium, comprise tup and hammer handle, and it is characterized in that: described hammer handle material is 40Mn
2Low-alloy steel, tup material are high-chromium alloy cast-iron, and hammer handle is combined the surface texture of shank with tup be nail-like, tup hardness HRC 〉=60, impact flexibility ak 〉=6Jcm
2, hammer handle hardness HBW:190-245, impact flexibility ak 〉=45Jcm
2
The percentage by weight chemical composition of described tup is: C:2.0～3.1%, Si:0.2～1.2%, Cr:12～18%, Mn:0.5～1.8%, Mo:1.0～1.8%, Ni:0.01～0.06%, Cu:0.2-1.0%, Re:0.1-0.3%, S:0.06%, P:0.1%, and surplus is Fe;
The percentage by weight chemical composition of described hammer handle is: C:0.35～0.45%, Si:0.2～0.4%, Mn:0.6～1.8%, surplus are Fe.
The step of preparation process of described tup is:
The preparation technology of described hammer handle: through batching, 1550 ℃ of smeltings after the cast depanning, are carried out first stress relief annealing, polish after the annealing, before the tup castingin, put 180～220 ℃ of heating in the heat-treatment furnace, and are for subsequent use;
The preparation technology of described tup is: through batching, and 1550 ℃ of smeltings, 1420～1480 ℃ of depanning coolings after 10 hours are poured into a mould, are incubated to above-mentioned hammer handle and tup binding site, polishing, heating, insulation, wind are quenched, tempering, cooling acquisition goods;
Described heating is protected, warm step is to be warmed up to after 980 ℃ of the hardening heats insulation 120 minutes, the preparation of quenching;
Described quenching step is that semi-finished product are come out of the stove after 980 ℃ of constant temperature of hardening heat keep finishing, and carries out cold wind and quenches, and temperature is down to 90 ± 5 ℃ and is carried out the tempering preparation;
Described tempering step is that the semi-finished product after quenching are heated to 200 ± 5 ℃ of temperatures, Slow cooling after constant temperature keeps finishing, and the time that its constant temperature keeps is 3 hours.
The beneficial effect that the present invention has: owing to fully taking into account the anufacturability of pendulum during the Design of Chemical Composition of pendulum, the factor such as application conditions and adaptability, by the chemical composition of appropriate design pendulum and the nail-like structure on hammer handle and surface, tup joint portion, so that the surface contact portion of hammer handle and tup is oozed interlock, strong bonded mutually, the tup hardness HRC that obtains 〉=60, impact flexibility ak 〉=6Jcm
2, hammer handle hardness HBW:190-245, impact flexibility ak 〉=45Jcm
2, the strike position of having satisfied large-scale pendulum has high rigidity and certain toughness, guarantees its high-wearing feature; Hammer handle has high tenacity and certain hardness simultaneously, have the transition connecting portion to the installation position from hitting the position, each position performance of pendulum is changed in gradient, thereby guarantee phenomenon of rupture not occur in the use procedure, guarantee the safety in utilization of tup, and increase substantially its service life.
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with preferred embodiment, to the low-carbon (LC) of foundation the present invention proposition, the specific embodiment, method, step, feature and the effect thereof of the compound pendulum of high chromium, be described in detail as follows:
Embodiment 1:
The first step: alloying component by weight percentage is: C:0.35%, Si:0.4%, Mn:1.6%, and surplus is Fe; Through batching → cooling forming in 1550 ℃ of sand casting chambeies that are cast to required hammer handle shape, hammer handle is combined the surface texture of shank with tup be nail-like, shake out in the time of 100 ℃ polishing (hammer handle and tup binding site must smooth, casting skin must not be arranged) → put 200 ℃ of heating in the heat-treatment furnace of hammer handle is for subsequent use after the annealing;
Second step: chemical composition is by weight percentage: C:2.6%, Si:0.7%, Cr:18%, Mn:1.6%, Mo:1.2%, Ni:0.02%, Cu:0.3%, Re:0.1%, S:0.06%, P:0.1%, and surplus is Fe; Through → 1550 ℃ of batchings smelt → 1420～1480 ℃ after 10 hours are poured into a mould, are incubated to above-mentioned hammer handle and tup binding site depanning cool off → polish → be heated to 980 ℃, 120 minutes → wind of insulation and quench to 95 ℃ → 205 ℃ tempering, be incubated 3 hours → naturally cool to and obtain final pendulum product below 100 ℃, tup hardness HRC=60, impact flexibility ak=6Jcm
2, hammer handle hardness HBW:=200, impact flexibility ak=46Jcm
2
Embodiment 2:
The first step: alloying component by weight percentage is: C:0.38%, Si:0.3%, Mn:1.2%, and surplus is Fe; Through batching → cooling forming in 1550 ℃ of sand casting chambeies that are cast to required hammer handle shape, hammer handle is combined the surface texture of shank with tup be nail-like, shake out in the time of 100 ℃ polishing (hammer handle and tup binding site must smooth, casting skin must not be arranged) → put 190 ℃ of heating in the heat-treatment furnace of hammer handle is for subsequent use after the annealing;
Second step: chemical composition is by weight percentage: C:2.1%, Si:0.4%, Cr:14%, Mn:1.2%, Mo:1.4%, Ni:0.04%, Cu:0.6%, Re:0.2%, S:0.06%, P:0.1%, and surplus is Fe; Through → 1550 ℃ of batchings smelt → 1420～1480 ℃ after 10 hours are poured into a mould, are incubated to above-mentioned hammer handle and tup binding site depanning cool off → polish → be heated to 980 ℃, 120 minutes → wind of insulation and quench to 90 ℃ → 200 ℃ tempering, be incubated 3 hours → naturally cool to and obtain final pendulum product below 100 ℃, tup hardness HRC=62, impact flexibility ak=7Jcm
2, hammer handle hardness HBW:=220, impact flexibility ak=47Jcm
2
Embodiment 3:
The first step: alloying component by weight percentage is: C:0.42%, Si:0.4%, Mn:1.6%, and surplus is Fe; Through batching → cooling forming in 1550 ℃ of sand casting chambeies that are cast to required hammer handle shape, hammer handle is combined the surface texture of shank with tup be nail-like, shake out in the time of 100 ℃ polishing (hammer handle and tup binding site must smooth, casting skin must not be arranged) → put 180 ℃ of heating in the heat-treatment furnace of hammer handle is for subsequent use after the annealing;
Second step: chemical composition is by weight percentage: C:3.0%, Si:1.0%, Cr:17%, Mn:1.7%, Mo:1.7%, Ni:0.05%, Cu:0.8%, Re:0.3%, S:0.06%, P:0.1%, and surplus is Fe; Through → 1550 ℃ of batchings smelt → 1420～1480 ℃ after 10 hours are poured into a mould, are incubated to above-mentioned hammer handle and tup binding site depanning cool off → polish → be heated to 980 ℃, 120 minutes → wind of insulation and quench to 85 ℃ → 195 ℃ tempering, be incubated 3 hours → naturally cool to and obtain final pendulum product below 100 ℃, tup hardness HRC=64, impact flexibility ak=8Jcm
2, hammer handle hardness HBW:=240, impact flexibility ak=48Jcm
2
The above only is the specific embodiment of the present invention.Protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (2)
1. low-carbon (LC), the compound pendulum of high chromium comprise tup and hammer handle, it is characterized in that: described hammer handle material is 40Mn
2Low-alloy steel, tup material are high-chromium alloy cast-iron, and hammer handle is combined the surface texture of shank with tup be nail-like, tup hardness HRC 〉=60, impact flexibility ak 〉=6Jcm
2, hammer handle hardness HBW:190-245, impact flexibility ak 〉=45Jcm
2
The percentage by weight chemical composition of described tup is: C:2.0～3.1%, Si:0.2～1.2%, Cr:12～18%, Mn:0.5～1.8%, Mo:1.0～1.8%, Ni:0.01～0.06%, Cu:0.2-1.0%, Re:0.1-0.3%, S:0.06%, P:0.1%, and surplus is Fe;
The percentage by weight chemical composition of described hammer handle is: C:0.35～0.45%, Si:0.2～0.4%, Mn:0.6～1.8%, surplus are Fe.
2. low-carbon (LC) according to claim 1, the compound pendulum of high chromium, it is characterized in that: the step of preparation process of described tup is:
The preparation technology of described hammer handle: through batching, 1550 ℃ of smeltings after the cast depanning, are carried out first stress relief annealing, polish after the annealing, before the tup castingin, put 180～220 ℃ of heating in the heat-treatment furnace, and are for subsequent use;
The preparation technology of described tup is: through batching, and 1550 ℃ of smeltings, 1420～1480 ℃ of depanning coolings after 10 hours are poured into a mould, are incubated to above-mentioned hammer handle and tup binding site, polishing, heating, insulation, wind are quenched, tempering, cooling acquisition goods;
Described heating, incubation step are to be warmed up to after 980 ℃ of the hardening heats insulation 120 minutes, the preparation of quenching;
Described quenching step is that semi-finished product are come out of the stove after 980 ℃ of constant temperature of hardening heat keep finishing, and carries out cold wind and quenches, and temperature is down to 90 ± 5 ℃ and is carried out the tempering preparation;
Described tempering step is that the semi-finished product after quenching are heated to 200 ± 5 ℃ of temperatures, Slow cooling after constant temperature keeps finishing, and the time that its constant temperature keeps is 3 hours.
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| CN 201210318527 CN103008062A (en) | 2012-08-31 | 2012-08-31 | Low-carbon high-chromium composite swing hammer |
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| CN 201210318527 CN103008062A (en) | 2012-08-31 | 2012-08-31 | Low-carbon high-chromium composite swing hammer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103263958A (en) * | 2013-04-16 | 2013-08-28 | 安徽省宁国市宁沪钢球有限公司 | Novel multi-component alloy composite hammer |
| CN103981464A (en) * | 2014-05-07 | 2014-08-13 | 中建材宁国新马耐磨材料有限公司 | Compound hammerhead |
| CN105316566A (en) * | 2015-10-28 | 2016-02-10 | 安徽省三方新材料科技有限公司 | Abrasion-resistant ball special for mines and manufacturing method for abrasion-resistant ball |
| CN105483558A (en) * | 2015-12-08 | 2016-04-13 | 襄阳五二五泵业有限公司 | High-chromium alloy material for flue gas desulfurization pump and manufacturing method of high-chromium alloy material |
| CN105838982A (en) * | 2016-05-23 | 2016-08-10 | 安徽鑫宏机械有限公司 | Rare-earth oxide cast-infiltrated crusher wear-resistant hammer for complex ores and production method thereof |
| CN106191700A (en) * | 2016-08-12 | 2016-12-07 | 宁国井田机电有限公司 | A kind of pump motor is with high chromium high-strength impact-resistant alloy |
| CN106893927A (en) * | 2017-03-23 | 2017-06-27 | 金华市星球机械铸钢有限公司 | A kind of production technology of antiwear high-chromium cast iron material |
| CN108425077A (en) * | 2017-02-14 | 2018-08-21 | 常熟市电力耐磨合金铸造有限公司 | A kind of high abrasion shock resistance castingin type compression roller |
| CN109365785A (en) * | 2018-11-29 | 2019-02-22 | 山东建筑大学 | A kind of two-way hammer head of hammer crusher and its manufacturing method |
-
2012
- 2012-08-31 CN CN 201210318527 patent/CN103008062A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103263958A (en) * | 2013-04-16 | 2013-08-28 | 安徽省宁国市宁沪钢球有限公司 | Novel multi-component alloy composite hammer |
| CN103981464A (en) * | 2014-05-07 | 2014-08-13 | 中建材宁国新马耐磨材料有限公司 | Compound hammerhead |
| CN105316566A (en) * | 2015-10-28 | 2016-02-10 | 安徽省三方新材料科技有限公司 | Abrasion-resistant ball special for mines and manufacturing method for abrasion-resistant ball |
| CN105483558A (en) * | 2015-12-08 | 2016-04-13 | 襄阳五二五泵业有限公司 | High-chromium alloy material for flue gas desulfurization pump and manufacturing method of high-chromium alloy material |
| CN105838982A (en) * | 2016-05-23 | 2016-08-10 | 安徽鑫宏机械有限公司 | Rare-earth oxide cast-infiltrated crusher wear-resistant hammer for complex ores and production method thereof |
| CN106191700A (en) * | 2016-08-12 | 2016-12-07 | 宁国井田机电有限公司 | A kind of pump motor is with high chromium high-strength impact-resistant alloy |
| CN108425077A (en) * | 2017-02-14 | 2018-08-21 | 常熟市电力耐磨合金铸造有限公司 | A kind of high abrasion shock resistance castingin type compression roller |
| CN106893927A (en) * | 2017-03-23 | 2017-06-27 | 金华市星球机械铸钢有限公司 | A kind of production technology of antiwear high-chromium cast iron material |
| CN106893927B (en) * | 2017-03-23 | 2018-08-07 | 金华市星球机械铸钢有限公司 | A kind of production technology of antiwear high-chromium cast iron material |
| CN109365785A (en) * | 2018-11-29 | 2019-02-22 | 山东建筑大学 | A kind of two-way hammer head of hammer crusher and its manufacturing method |
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Application publication date: 20130403 |