CN106076480A - A kind of roll squeezer alloy roller shell and processing method thereof - Google Patents

A kind of roll squeezer alloy roller shell and processing method thereof Download PDF

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Publication number
CN106076480A
CN106076480A CN201610550197.5A CN201610550197A CN106076480A CN 106076480 A CN106076480 A CN 106076480A CN 201610550197 A CN201610550197 A CN 201610550197A CN 106076480 A CN106076480 A CN 106076480A
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CN
China
Prior art keywords
wearing layer
lining
roller shell
roll squeezer
transition zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610550197.5A
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Chinese (zh)
Inventor
王大亮
王二虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Double Hair Machinery Co Ltd
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Jiangsu Double Hair Machinery Co Ltd
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Filing date
Publication date
Application filed by Jiangsu Double Hair Machinery Co Ltd filed Critical Jiangsu Double Hair Machinery Co Ltd
Priority to CN201610550197.5A priority Critical patent/CN106076480A/en
Publication of CN106076480A publication Critical patent/CN106076480A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/16—Casting 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium

Abstract

nullA kind of roll squeezer alloy roller shell and processing method thereof，Including lining (1) and wearing layer (2)，Wearing layer (2) and lining (1) use second pouring、One-time formed centrifugal casting technique，The transition zone (3) that thickness is 25 40mm is formed between wearing layer (2) and lining (1)，The thickness of wearing layer (2) is 40 50mm，Following (percentage by weight): the C:0.8 1.8 of the chemical composition of wearing layer (2)、Si:0.1 1.0、Mn:0.1 1.2、P :≤0.03、S :≤0.03、Gr:3.0 4.5、Ni:0.8 1.5、Mo:4.5 6.0、W:1.4 2.1、V:1.75 2.25，Remainder is ferrum and inevitable impurity，Procedure of processing is as follows: weighing proportioning、Baking、Melting、Cast、Heat treatment and polish，Wearing layer of the present invention and decorative pattern one-shot forming，Production efficiency is high、Wearability is good、Life-span is long.

Description

A kind of roll squeezer alloy roller shell and processing method thereof
Technical field
The invention belongs to roll squeezer technical field, be specifically related to a kind of roll squeezer alloy roller shell and processing method thereof.
Background technology
Roll squeezer is widely used in the grinding of cement and raw material etc., the application of roll squeezer, not only reduces power consumption, Er Qieti High mill output and quality.Owing to material is to carry out grinding by the extruding of pressure roller, therefore roller surface abrasion is can not Avoid, so the Life Design of pressure roller, manufacturing and use unit very concern, enjoy manufacturer and user's weight always Depending on.
The pressure roller of roll squeezer is overall in early days, is machined with decorative pattern at roller surface, when decorative pattern heavy wear can not use Whole pressure roller must be changed, cause and greatly waste.
Pressure roller is divided into roller shell and axle two parts the most mostly, and roller shell is built-up welding on the surface of cast iron liners or forging lining Wearing layer and decorative pattern, this roller shell there is also clearly disadvantageous, is mainly manifested in:
(1) wearing layer thinner thickness, easy to wear fall, after abrasion will built-up welding again, longer downtime need to be spent, impact The productivity ratio of roll squeezer
(2) built-up welding can produce impact to the life-span of lining repeatedly, reduces the service life of roller shell.
(3) the bonding strength deficiency between wearing layer and lining can cause roller shell face checking, be full of cracks, scaling or delamination etc. Phenomenon, has a strong impact on the service life of roller shell.
(4) produce and maintenance efficiency is low and quality is difficult to ensure.
Summary of the invention
Short for solving existing roller shell wear time, it is easily generated the deficiencies such as cracking, be full of cracks, scaling or delamination, the present invention provides A kind of production efficiency is high, wearability is good and the roller sleeve of roller press of length in service life.
A kind of roll squeezer alloy roller shell, including lining and wearing layer, has a transition zone in the centre of lining and wearing layer, lining Set, transition zone and wearing layer are an entirety.
Wearing layer thickness is 40-50mm, it is ensured that roller shell has enough wearabilities, prevents again high-abrasive material from using simultaneously Cause waste more.
The thickness of transition zone is 25-40mm's, makes lining and wearing layer tissue and smooth performance transition, it is ensured that wearing layer and Enough bonding strengths are had between lining.
There is decorative pattern on the surface of wearing layer, and the ratio of adjacent decorative pattern open top distance and pattern depth is between 1.7-1.9.
The chemical composition (percentage by weight) of wearing layer 2 is as follows: C:0.8-1.8, Si:0.1-1.0, Mn:0.1-1.2, P: ≤ 0.03, S :≤0.03, Gr:3.0-4.5, Ni:0.8-1.5, Mo:4.5-6.0, W:1.4-2.1, V:1.75-2.25, its remaining part It is divided into ferrum and inevitable impurity.
A kind of processing method of roll squeezer alloy roller shell, including following procedure of processing:
1. weighing proportioning: according to chemical composition (percentage by weight) weighing proportioning；
2. baking: raw material is heated to 400 DEG C of baking 4-5h；
3. melting: raw material is heated to 1650 DEG C, sample analysis also proceeds to refine, adds Calx and aluminium powder in refining process Deoxidation, whole process about 35-45 minute；
4. cast: use second pouring, one-time formed centrifugal casting technique, adjusts alloy compositions according to analysis result and contains After amount reaches prescribed limit, it is warmed up to 1680 DEG C of tappings, when steel temperature drop to 1580 DEG C, pours into a mould wearing layer, pour into a mould at wearing layer After end in 1.5-2.5 minute, (note: lining and wearing layer heat simultaneously, lining pouring temperature is 1560-to start to pour into a mould lining 1580 DEG C), after cast terminates, it is cooled to 890-910 DEG C of depanning；
5. heat treatment: treat that temperature is cooled to 490-510 DEG C, enters stove insulation 2-2.5h, is then warmed up to 790-810 DEG C, Insulation 2-2.5h, then it is warmed up to 1100-1120 DEG C, it is incubated 1.5-2h, finally heated to 1340-1350 DEG C, is incubated 1.5-2h, so Rear air cooling；
6. polish: be carried out in accordance with regulations polish.
Wearing layer and lining use second pouring, one-time formed centrifugal casting technique, first pour into a mould wearing layer, then pour into a mould Lining, controls in 1.5-2.5 minute, now to have crystallized solidifying outside wearing layer after wearing layer cast terminates the duration of pouring of lining Gu, internal also in liquid condition, make wearing layer and hub sections fusion form the transition zone of 25-40mm thickness, such as lining and The time interval of wearing layer cast is the shortest, and very little, wearing layer thickness is little for the part of wearing layer crystallization and freezing, the thickness of transition zone Greatly, it is impossible to ensure that roller shell has enough wearabilities, the time interval poured into a mould such as lining and wearing layer is oversize, and intermediate layer thickness is little, It cannot be guaranteed that have enough bonding strengths between lining and wearing layer tissue and smooth performance transition and wearing layer and lining.
Beneficial effect:
1, lining, transition zone, wearing layer and decorative pattern one-shot forming, production efficiency is high；
2, roller shell wearability is good.
3, have certain thickness transition zone, make lining and wearing layer tissue and smooth performance transition, wearing layer and lining it Between have enough bonding strengths, even if wearing layer goes out relatively macrolesion and also will not cause roller shell and significantly affect, the roller shell life-span carries High more than 1.5 times.
4, maintenance and use cost are low.
Accompanying drawing explanation
Fig. 1 is the end face structure schematic diagram of embodiment；
Fig. 2 is the partial enlarged view in embodiment Fig. 1 at I.
In figure: 1, lining；2, wearing layer；3, transition zone；4, decorative pattern.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1: a kind of roll squeezer alloy roller shell as depicted in figs. 1 and 2, including lining 1 and wearing layer 2, at lining 1 A transition zone 3, lining 1, transition zone 2 and wearing layer 3 is had to be an entirety with the centre of wearing layer 2.
Wearing layer 2 thickness is 40-50mm, it is ensured that roller shell has enough wearabilities, prevents again high-abrasive material from using simultaneously Too much cause waste.
The thickness of transition zone 3 is 25-40mm's, makes lining 1 and wearing layer 2 tissue and smooth performance transition, it is ensured that wear-resisting Layer 2 and lining 1 between have enough bonding strengths.
The outside of wearing layer 2 has decorative pattern 4, distance L between adjacent decorative pattern 4 top to be 1.7-with the ratio of decorative pattern 4 depth H 1.9。
The chemical composition of wearing layer 2 is following (percentage by weight): C:0.8-1.8, Si:0.1-1.0, Mn:0.1-1.2, P: ≤ 0.03, S :≤0.03, Gr:3.0-4.5, Ni:0.8-1.5, Mo:4.5-6.0, W:1.4-2.1, V:1.75-2.25, its remaining part It is divided into ferrum and inevitable impurity.
Lining 1 uses high-carbon steel, has good combination property.
Embodiment 2: disclose the processing method manufacturing a kind of roll squeezer alloy roller shell described in embodiment 1, including as follows Step:
1. weighing proportioning: according to chemical composition (percentage by weight) weighing proportioning；
2. baking: raw material is heated to 400 DEG C of baking 4-5h；
3. melting: raw material is heated to 1650 DEG C, sample analysis also proceeds to refine, adds Calx and aluminium powder in refining process Deoxidation, whole process about 35-45 minute；
4. cast: use second pouring, one-time formed centrifugal casting technique, adjusts alloy compositions according to analysis result and contains After amount reaches prescribed limit, it is warmed up to 1680 DEG C of tappings, when steel temperature drop to 1580 DEG C, pours into a mould wearing layer 2, water at wearing layer 2 Note terminates in latter 1.5-2.5 minute, starts to pour into a mould lining 1 (note: lining 1 and wearing layer 2 heat simultaneously, the pouring temperature of lining 1 For 1560-1580 DEG C), after cast terminates, it is cooled to 890-910 DEG C of depanning；
5. heat treatment: treat that temperature is cooled to 490-510 DEG C, enters stove insulation 2-2.5h, is then warmed up to 790-810 DEG C, Insulation 2-2.5h, then it is warmed up to 1100-1120 DEG C, it is incubated 1.5-2h, finally heated to 1340-1350 DEG C, is incubated 1.5-2h, so Rear air cooling；
6. polish: be carried out in accordance with regulations polish.
Wearing layer 2 and lining 1 use second pouring, one-time formed centrifugal casting technique, after wearing layer 2 cast terminates In 1.5-2.5 minute, beginning to pour into a mould lining 1, now the outside crystallization and freezing of wearing layer 2, inside are also in liquid condition, make Lining 1 and the transition zone 3 that wearing layer 2 partially fused formation thickness is 25-40mm, make lining 1 and wearing layer 2 tissue and performance put down Steady transition, it is ensured that have enough bonding strengths between wearing layer 2 and lining 1.
The roll squeezer alloy roller shell manufactured by this method, has following mechanical property: the hardness of wearing layer 2 is 63- 68HRC, the hardness of transition zone 3 is 50-60HRC, hardness 35-48HRC of lining 1.

Claims (5)

1. a roll squeezer alloy roller shell, including lining (1) and wearing layer (2), it is characterised in that: at lining (1) and wearing layer (2) centre has a transition zone (3), lining (1), wearing layer (2) and transition zone (3) to be an entirety, and the thickness of transition zone (3) is 25-40mm, the thickness of wearing layer (2) is 40-50mm.
2. a kind of roll squeezer alloy roller shell as claimed in claim 1, it is characterised in that: there is decorative pattern on the surface of wearing layer (2) (4), the ratio of adjacent decorative pattern (4) open top distance L and decorative pattern (4) depth H is between 1.7-1.9.
3. a kind of roll squeezer alloy roller shell as claimed in claim 1, it is characterised in that: the chemical composition of wearing layer (2) is as follows (percentage by weight): C:0.8-1.8, Si:0.1-1.0, Mn:0.1-1.2, P :≤0.03, S :≤0.03, Gr:3.0-4.5, Ni: 0.8-1.5, Mo:4.5-6.0, W:1.4-2.1, V:1.75-2.25, remainder is ferrum and inevitable impurity.
4. a processing method for roll squeezer alloy roller shell, procedure of processing is as follows:
1. weighing proportioning: according to chemical composition (percentage by weight) weighing proportioning；
2. baking: raw material is heated to 400 DEG C of baking 4-5h；
3. melting: raw material is heated to 1650 DEG C, sample analysis also proceeds to refine, adds Calx and aluminium powder takes off in refining process Oxygen, whole process about 35-45 minute；
4. cast: use second pouring, one-time formed centrifugal casting technique, adjusts alloy component content according to analysis result and reaches After prescribed limit, it is warmed up to 1680 DEG C of tappings, when steel temperature drop to 1580 DEG C, cast wearing layer (2), water at wearing layer (2) Note terminates in latter 1.5-2.5 minute, starts to pour into a mould lining (1) (note: lining (1) and wearing layer (2) heat simultaneously, lining (1) Pouring temperature is 1560-1580 DEG C), after cast terminates, it is cooled to 890-910 DEG C of depanning；
5. heat treatment: treat that temperature is cooled to 490-510 DEG C, enters stove insulation 2-2.5h, is then warmed up to 790-810 DEG C, insulation 2-2.5h, then it is warmed up to 1100-1120 DEG C, it is incubated 1.5-2h, finally heated to 1340-1350 DEG C, is incubated 1.5-2h, then empty Cold；
6. polish: be carried out in accordance with regulations polish.
The processing method of a kind of roll squeezer alloy roller shell the most as claimed in claim 4, it is characterised in that: water at wearing layer (2) Note terminates in latter 1.5-2.5 minute, when i.e. the outside crystallization and freezing of wearing layer (2), inside are also in liquid condition, begins to water Note lining (1), at wearing layer (2) and transition zone (3) that lining (1) intermediate formation thickness is 25-40mm.
CN201610550197.5A 2016-07-07 2016-07-07 A kind of roll squeezer alloy roller shell and processing method thereof Pending CN106076480A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107150455A (en) * 2017-06-01 2017-09-12 江苏双发机械有限公司 A kind of composite casting hard alloy stud pressure roller and manufacture method
CN107617469A (en) * 2017-09-11 2018-01-23 邢台恒丰轧辊制造有限公司 Alloy roller sleeve of roller press, frock and manufacturing process
CN108246412A (en) * 2018-03-07 2018-07-06 渠县金城合金铸业有限公司 A kind of Abrasion-resistant tooth roller shell of roll crusher
CN110252463A (en) * 2019-06-24 2019-09-20 郑州机械研究所有限公司 A kind of abrasion-proof structure and preparation method thereof being easily repaired
CN115055658A (en) * 2022-05-12 2022-09-16 江苏双发机械有限公司 Centrifugal casting method of wear-resistant alloy roller sleeve

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JPS614306B2 (en) * 1980-06-26 1986-02-08 Kanto Special Steel Works Ltd
CN1125777A (en) * 1995-10-31 1996-07-03 杭州临安耐磨件总厂 Centrifugal compound wear-resistant roll and its production method
CN1190041A (en) * 1997-02-05 1998-08-12 杜永康 Bimetallic centrifugal casting process for cylindrical casting
CN2702797Y (en) * 2004-05-24 2005-06-01 周国良 Skull-melting centrifugal casting double-metal special steel pipe
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107150455A (en) * 2017-06-01 2017-09-12 江苏双发机械有限公司 A kind of composite casting hard alloy stud pressure roller and manufacture method
CN107617469A (en) * 2017-09-11 2018-01-23 邢台恒丰轧辊制造有限公司 Alloy roller sleeve of roller press, frock and manufacturing process
CN107617469B (en) * 2017-09-11 2023-08-18 邢台恒丰轧辊制造有限公司 Alloy roller press roller sleeve, tool and manufacturing process
CN108246412A (en) * 2018-03-07 2018-07-06 渠县金城合金铸业有限公司 A kind of Abrasion-resistant tooth roller shell of roll crusher
CN110252463A (en) * 2019-06-24 2019-09-20 郑州机械研究所有限公司 A kind of abrasion-proof structure and preparation method thereof being easily repaired
CN110252463B (en) * 2019-06-24 2023-05-05 郑州机械研究所有限公司 Wear-resistant structure convenient to repair and preparation method thereof
CN115055658A (en) * 2022-05-12 2022-09-16 江苏双发机械有限公司 Centrifugal casting method of wear-resistant alloy roller sleeve

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