CN106180651B - A kind of production technology of high abrasion castingin hammer disk - Google Patents

A kind of production technology of high abrasion castingin hammer disk Download PDF

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Publication number
CN106180651B
CN106180651B CN201610572105.3A CN201610572105A CN106180651B CN 106180651 B CN106180651 B CN 106180651B CN 201610572105 A CN201610572105 A CN 201610572105A CN 106180651 B CN106180651 B CN 106180651B
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CN
China
Prior art keywords
abrasion
temperature
castingin
cooling
production technology
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CN201610572105.3A
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Chinese (zh)
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CN106180651A (en
Inventor
张福全
陈玉祥
陈焕
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常熟市电力耐磨合金铸造有限公司
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Priority to CN201610572105.3A priority Critical patent/CN106180651B/en
Publication of CN106180651A publication Critical patent/CN106180651A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00Casting in, on, or around objects which form part of the product
    • B22D19/16Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26Details
    • B02C13/28Shape or construction of beater elements
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C32/00Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides whether added as such or formed in situ
    • C22C32/0047Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0052Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides

Abstract

The invention discloses the production technologies that a kind of high abrasion castingin hammers disk into shape, the production technology of melting, castingin, quenching, cooling is used successively, casting to surrounding is installed with castingin in the sandbox of multiple abrasion-proof sticks and is molded after ZG35SiMn is specially melt into molten metal as parent, it is heated to keeping the temperature 2 4h after 640 DEG C with the heating rate of 30 60 DEG C/h again, then is heated to the heating rate of 60 100 DEG C/h keeping the temperature 4 6h after 1080 DEG C;0.5 1h is kept the temperature after being finally heated to 1100 DEG C or more with the heating rate of 100 120 DEG C/h, finally product is put into the cooling bay filled with circulating water and is cooled down, through the above way, the present invention can greatly improve the wear-resisting property of hammer disk, and the firmness of castingin between hammer disk parent and abrasion-proof stick can also be improved, service life is longer.

Description

A kind of production technology of high abrasion castingin hammer disk

Technical field

The present invention relates to a kind of hammer disk, more particularly to a kind of production technology of high abrasion castingin hammer disk.

Background technology

Hammer mill is suitable for being crushed medium-hard material in industrial departments such as cement, chemical industry, electric power, metallurgy, such as Broken and fine crushing operation in the materials such as lime stone, clinker, coke, coal.Rotor is one of important component of hammer mill, and is hammered into shape Disk is the core component of rotor again, and the service life of rotor depends primarily on hammer disk.

Hammer disk currently produced on the market is broadly divided into ZG35SiMn+ built-up welding and steel plate disk+built-up welding, and the two is required for often The service life that built-up welding just can ensure that hammer disk is shut down, labor intensity is very high, and spillage of material is also big, needs to consume larger people Power, material resources, with the complication of industrial and mining condition and the continuous improvement of customer requirement, traditional hammer disk has not caught up with demand.

Invention content

The invention mainly solves the technical problem of providing the production technologies that a kind of high abrasion castingin hammers disk into shape, can substantially carry The wear-resisting property of height hammer disk, and the firmness of castingin between hammer disk parent and abrasion-proof stick can also be improved, service life is longer.

In order to solve the above technical problems, one aspect of the present invention is:A kind of high abrasion castingin hammer disk is provided Production technology, specifically comprise the following steps:

(1), melting:It selects ZG35SiMn as parent, and is put into and be melt into molten metal in high-temperature smelting pot, melting temperature Degree is 1600-1640 DEG C;

(2), castingin:It is poured into sandbox after above-mentioned molten metal is removed the gred, the surrounding of the inner wall of sand box is installed with Multiple abrasion-proof sticks, and the center of the sandbox is installed with a cylindrical loam core, cools down outlet after 48-54h, cast temperature is 1500-1540℃;

(3), quenching:Product is put into glowing furnace, 2- is kept the temperature after being heated to 640 DEG C with the heating rate of 30-60 DEG C/h 4h, then keep the temperature 4-6h after being heated to 1080 DEG C with the heating rate of 60-100 DEG C/h;Finally with the heating rate of 100-120 DEG C/h 0.5-1h is kept the temperature after being heated to 1100 DEG C or more;

(4), it is cooling:By in the transferred product to cooling bay after the completion of above-mentioned quenching, transfer time is no more than 0.5min, institute The cooling water filled with flowing in cooling bay is stated, the cooling water weight is 8-10 times of product weight, and water temperature is 20-30 DEG C, It is discharged drying after cooling 1-2h.

In a preferred embodiment of the present invention, each ingredient in the abrasion-proof stick and its mass percentage are as follows:TiC It accounts for 40%, Fe and accounts for 32%, Ni and account for 3.2%, Mo and account for 1.6%, Mn and account for 20%, Cr and account for 3.2%.

In a preferred embodiment of the present invention, the flow of cooling water direction in the cooling bay is:It is injected from bottom of pond, pond Top outflow, can ensure that product is fully cooled, to ensure the quality of heat treatment.

In a preferred embodiment of the present invention, the flow of the cooling water is 10m3/h。

In a preferred embodiment of the present invention, the product needs to keep moving in cooling bay, can ensure cooling bay The uniformity of interior temperature improves the quality of heat treatment.

The beneficial effects of the invention are as follows:

(1), in such a way that melting adds castingin, specially on ZG35SiMn parents surface, castingin has multiple abrasion-proof sticks, phase Than in the production method of traditional forging plus built-up welding, the wear-resisting property of obtained hammer disk is more prominent, and service life more lengthens Long, the built-up welding number of hammer disk and can be greatly decreased during use, even without built-up welding, to greatly improve production effect Rate reduces production cost;

(2), by the way of heat stepwise postcooling, specially in different temperatures section using different heating rates into Row quenching, and product is carried out to be quickly cooled down processing using the cooling bay of the cooling water filled with flowing, it can improve in Re Chu Product quality in science and engineering skill, to greatly improve the firmness of castingin between hammer disk parent and abrasion-proof stick, wearability is high, uses Longer life expectancy is long.

Specific implementation mode

The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.

Embodiment 1:

A kind of production technology of high abrasion castingin hammer disk, specifically comprises the following steps:

(1), melting:It selects ZG35SiMn as parent, and is put into and be melt into molten metal in high-temperature smelting pot, melting temperature Degree is 1600 DEG C;

(2), castingin:It is poured into sandbox after above-mentioned molten metal is removed the gred, the surrounding of the inner wall of sand box is installed with Multiple abrasion-proof sticks, and the center of the sandbox is installed with a cylindrical loam core, cools down outlet after 54h, cast temperature is 1500℃;Each ingredient and its mass percentage in the abrasion-proof stick is as follows:TiC, which accounts for 40%, Fe and accounts for 32%, Ni, accounts for 3.2%, Mo It accounts for 1.6%, Mn and accounts for 20%, Cr and account for 3.2%.

(3), quenching:Product is put into glowing furnace, is heated to keeping the temperature 2h after 640 DEG C with the heating rate of 30 DEG C/h, then 4h is kept the temperature after being heated to 1080 DEG C with the heating rate of 60 DEG C/h;Finally with the heating rate of 100 DEG C/h be heated to 1100 DEG C with 0.5h is kept the temperature after upper;

(4), it is cooling:By in the transferred product to cooling bay after the completion of above-mentioned quenching, transfer time is no more than 0.5min, institute The cooling water filled with flowing in cooling bay is stated, the cooling water weight is 8 times of product weight, and water temperature is 20 DEG C, cooling 2h Water outlet drying afterwards.

Embodiment 2:

A kind of production technology of high abrasion castingin hammer disk, specifically comprises the following steps:

(1), melting:It selects ZG35SiMn as parent, and is put into and be melt into molten metal in high-temperature smelting pot, melting temperature Degree is 1640 DEG C;

(2), castingin:It is poured into sandbox after above-mentioned molten metal is removed the gred, the surrounding of the inner wall of sand box is installed with Multiple abrasion-proof sticks, and the center of the sandbox is installed with a cylindrical loam core, cools down outlet after 48h, cast temperature is 1540℃;Each ingredient and its mass percentage in the abrasion-proof stick is as follows:TiC, which accounts for 40%, Fe and accounts for 32%, Ni, accounts for 3.2%, Mo It accounts for 1.6%, Mn and accounts for 20%, Cr and account for 3.2%.

(3), quenching:Product is put into glowing furnace, is heated to keeping the temperature 4h after 640 DEG C with the heating rate of 60 DEG C/h, then 6h is kept the temperature after being heated to 1080 DEG C with the heating rate of 100 DEG C/h;Finally with the heating rate of 120 DEG C/h be heated to 1100 DEG C with 1h is kept the temperature after upper;

(4), it is cooling:By in the transferred product to cooling bay after the completion of above-mentioned quenching, transfer time is no more than 0.5min, institute The cooling water filled with flowing in cooling bay is stated, the cooling water weight is 10 times of product weight, and water temperature is 30 DEG C, cooling 1h Water outlet drying afterwards.

Embodiment 3:

A kind of production technology of high abrasion castingin hammer disk, specifically comprises the following steps:

(1), melting:It selects ZG35SiMn as parent, and is put into and be melt into molten metal in high-temperature smelting pot, melting temperature Degree is 1620 DEG C;

(2), castingin:It is poured into sandbox after above-mentioned molten metal is removed the gred, the surrounding of the inner wall of sand box is installed with Multiple abrasion-proof sticks, and the center of the sandbox is installed with a cylindrical loam core, cools down outlet after 51h, cast temperature is 1520℃;Each ingredient and its mass percentage in the abrasion-proof stick is as follows:TiC, which accounts for 40%, Fe and accounts for 32%, Ni, accounts for 3.2%, Mo It accounts for 1.6%, Mn and accounts for 20%, Cr and account for 3.2%.

(3), quenching:Product is put into glowing furnace, is heated to keeping the temperature 3h after 640 DEG C with the heating rate of 45 DEG C/h, then 5h is kept the temperature after being heated to 1080 DEG C with the heating rate of 80 DEG C/h;Finally with the heating rate of 110 DEG C/h be heated to 1100 DEG C with 0.75h is kept the temperature after upper;

(4), it is cooling:By in the transferred product to cooling bay after the completion of above-mentioned quenching, transfer time is no more than 0.5min, institute The cooling water filled with flowing in cooling bay is stated, the cooling water weight is 9 times of product weight, and water temperature is 25 DEG C, cooling Drying is discharged after 1.5h.

Wherein, the flow of the cooling water is 10m3/ h, flow of cooling water direction are:It is injected from bottom of pond, Chi Ding outflows, energy Enough ensure that product is fully cooled, to ensure the quality of heat treatment.

The product needs to keep moving in cooling bay, can ensure the uniformity of temperature in cooling bay, improves heat treatment Quality.

It is different from the prior art, the present invention specially inlays on ZG35SiMn parents surface in such a way that melting adds castingin Multiple abrasion-proof sticks are cast with, compared to the production method of traditional forging plus built-up welding, the wear-resisting property of obtained hammer disk is more prominent Going out, service life is more permanent, and the built-up welding number of hammer disk can be greatly decreased during use, even without built-up welding, To greatly improve production efficiency, production cost is reduced;Simultaneously also by the way of heat stepwise postcooling, specially in difference It is quenched using different heating rates in temperature range, and product is carried out using the cooling bay of the cooling water filled with flowing Be quickly cooled down processing, the product quality in heat treatment process can be improved, to greatly improve hammer disk parent and abrasion-proof stick it Between castingin firmness, wearability is high, and the service life is longer long.

Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks Domain is included within the scope of the present invention.

Claims (5)

1. a kind of production technology of high abrasion castingin hammer disk, which is characterized in that specifically comprise the following steps:
(1), melting:It selects ZG35SiMn as parent, and is put into and be melt into molten metal in high-temperature smelting pot, melting temperature is 1600-1640℃;
(2), castingin:It will be poured into sandbox after the slagging-off of above-mentioned molten metal, the surrounding of the inner wall of sand box is installed with multiple Abrasion-proof stick, and the center of the sandbox is installed with a cylindrical loam core, cools down outlet after 48-54h, cast temperature is 1500-1540℃;
(3), quenching:Product is put into glowing furnace, is heated to keeping the temperature 2-4h after 640 DEG C with the heating rate of 30-60 DEG C/h, then 4-6h is kept the temperature after being heated to 1080 DEG C with the heating rate of 60-100 DEG C/h;Finally heated with the heating rate of 100-120 DEG C/h 0.5-1h is kept the temperature after to 1100 DEG C or more;
(4), it is cooling:By in the transferred product to cooling bay after the completion of above-mentioned quenching, transfer time is no more than 0.5min, described cold But the cooling water filled with flowing in pond, the cooling water weight are 8-10 times of product weight, and water temperature is 20-30 DEG C, cooling Drying is discharged after 1-2h.
2. the production technology of high abrasion castingin hammer disk according to claim 1, which is characterized in that each in the abrasion-proof stick Ingredient and its mass percentage are as follows:TiC, which accounts for 40%, Fe and accounts for 32%, Ni and account for 3.2%, Mo and account for 1.6%, Mn and account for 20%, Cr, accounts for 3.2%.
3. the production technology of high abrasion castingin hammer disk according to claim 1, which is characterized in that cold in the cooling bay But water flowing direction is:It is injected from bottom of pond, Chi Ding outflows.
4. the production technology of high abrasion castingin hammer disk according to claim 1, which is characterized in that the flow of the cooling water For 10m3/h。
5. the production technology of high abrasion castingin hammer disk according to claim 1, which is characterized in that the product is in cooling bay Inside need to keep moving.
CN201610572105.3A 2016-07-20 2016-07-20 A kind of production technology of high abrasion castingin hammer disk CN106180651B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106862533A (en) * 2016-12-30 2017-06-20 常熟市电力耐磨合金铸造有限公司 A kind of high rigidity impact resistance Cast-in Bonding bar and its preparation technology
CN107164705A (en) * 2017-07-04 2017-09-15 合肥择浚电气设备有限公司 A kind of production technology of excavator bucket teeth for ore dressing
CN109351949A (en) * 2018-11-27 2019-02-19 汪学军 A kind of imbedding process of composite hammer head

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102310014A (en) * 2011-08-22 2012-01-11 宁国市东方碾磨材料有限责任公司 High performance composite metal hammer
CN202497903U (en) * 2012-03-30 2012-10-24 江苏鹏胜重工股份有限公司 Wear-resistant hammer disc of hammer crusher
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
US8550389B2 (en) * 2008-07-25 2013-10-08 Alstom Technology Ltd Imp mill having a uniform wear hammer arrangement
CN203577877U (en) * 2013-10-14 2014-05-07 中材装备集团有限公司 Rotor hammer disc of hammer crusher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8550389B2 (en) * 2008-07-25 2013-10-08 Alstom Technology Ltd Imp mill having a uniform wear hammer arrangement
CN102310014A (en) * 2011-08-22 2012-01-11 宁国市东方碾磨材料有限责任公司 High performance composite metal hammer
CN202497903U (en) * 2012-03-30 2012-10-24 江苏鹏胜重工股份有限公司 Wear-resistant hammer disc of hammer crusher
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
CN203577877U (en) * 2013-10-14 2014-05-07 中材装备集团有限公司 Rotor hammer disc of hammer crusher

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