CN107876738B - A kind of multicomponent alloy grinding forming method of the surface with coarse grain - Google Patents
A kind of multicomponent alloy grinding forming method of the surface with coarse grain Download PDFInfo
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- CN107876738B CN107876738B CN201711180897.0A CN201711180897A CN107876738B CN 107876738 B CN107876738 B CN 107876738B CN 201711180897 A CN201711180897 A CN 201711180897A CN 107876738 B CN107876738 B CN 107876738B
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- grinding
- coarse grain
- rack gear
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- 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
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Abstract
A kind of multicomponent alloy grinding forming method of the surface with coarse grain, rack gear, which is prepared, with the suitable adhesive of different ratio, varigrained metallic particles and non-metallic particle addition is bonded in casting mold cavity surface, again with the casting of molten metal high temperature, molten metal high temperature action makes multi-nary alloy particles and parent metal melt infiltration, prepares to form the hard multicomponent alloy layer with compared with high impact resistance and high-wearing feature energy on roll flute surface.The forming method makes the multi-nary alloy particles and parent metal melt infiltration, be conducive to prepare to form the hard multicomponent alloy layer with compared with high impact resistance and high-wearing feature energy on roll flute surface, so that the grinding rack surface has certain coarse grain and micropore, since the grinding rack surface has certain coarse grain and micropore, in pulping process, increase rack gear coarse grain and micropore to the frictional force of fiber, promote fiber wire-dividing broom purification and interfibrous binding force.
Description
Technical field
The invention belongs to fiberizer grinding fields, and in particular to a kind of multicomponent alloy grinding molding side of the surface with coarse grain
Method.
Background technique
Tobacco sheets by paper making method (papermaking-method reconstituted tobaccos) is one kind raw material based on the tobacco materials such as offal, offal,
Papermaking technology principle is used for reference, using fiberizer grinding fiber in the tobacco articles laminated, pulping process is a core
Technical process.
Fiberizer is important not standby in tobacco sheets by paper making method production, and is ground when being paste mill grinding (mashing), right
Fibrous raw material directly carries out the core element of multiple action, and being ground has key effect to the quality for influencing mashing." three points are made
Paper, seven points of mashing ", more and more by pulping and paper-making, personage's this viewpoint knows together in the industry, also becomes cigarette paper and makes
The widespread consensus of paper method tobacco sheet industry.
But special document and report are also had no for the no particular study of applicable grinding of reconstituted tobacoo at present.
Traditional grinding material and flute profile are used in view of current industry, it is difficult to adapt to the mashing mechanism of tobacco slurry.Urgently study,
The grinding for being suitble to reconstituted tobacoo mashing is developed, the fibrillating of fiber is improved, keeps the inherent strength and weight in wet base of fiber, main mesh
Mark is that fiber wire-dividing broom purification is obtained suitable beating degree and preferable evenness slurry.
Make a general survey of in the mashing of tobacco sheets by paper making method, it is highly concentrated, in dense and low dense fiberizer have application, grinding is fiberizer
Core component, belong to vulnerable part, grinding using effect depends on the material and shape of rack gear, with good abrasion resistance and
Under the premise of toughness, reach good refining pulp quality.Up to the present, the grinding of practical application generallys use antifriction cast iron
Or steel alloy integral casting forming, since grinding is formed using one-step casting, material has compactness, and surface is smooth, lacks thick
Rough particle and hole lacks the rubbing action to fiber, it is difficult to promote the raising of fiber wire-dividing broom purification and specific surface area, in order to
Cause the decline of slurry water filtering performance and fiber excessively to be cut off while more raising pulp freeness, makes average fiber length
It is affected with bond strength, to influence whether the bulk of tobacco sheets by paper making method, absorbability and intensity.
Existing grinding can not make cabo particle obtain abundant grinding, cause substrate hole excessive.Domestic and international industry is current
The grinding material surface of application is smooth, and mainly by grinding rack flange shearing fibre, friction force is weak, it is difficult to set in chip base
Preferable pliability is obtained under the premise of bulk, it is also difficult to promote pulp freeness under the premise of lower beating degree and combine strong
The promotion of degree.Therefore the coarse grain alloy grinding for being suitble to tobacco sheet material feature and product characteristic is urgently developed, breaks through and restricts cigarette
The key technique bottleneck of careless thin slice production.
Summary of the invention
A kind of multicomponent alloy the purpose of the present invention is to provide surface with coarse grain is ground forming method.
Based on above-mentioned purpose, the present invention is adopted the following technical scheme that:
A kind of multicomponent alloy grinding forming method of the surface with coarse grain, includes the following steps:
(1) adhesive mixing is added in metallic particles and/or non-metallic particle and prepares rack gear, the quality of adhesive is metal
The 4 ~ 6% of particle and non-metallic particle gross mass；
(2) rack gear of preparation is bonded in casting mold cavity；
(3) parent metal liquid is melted, is poured into the casting mold cavity for being bonded with rack gear at 1300 DEG C -1780 DEG C；
(4) cooled to room temperature, sand removal obtain grinding casting；
(5) will grinding casting carry out ageing treatment, detailed process are as follows: 500 ~ 600 DEG C resistance furnace inside holding 3-5 hours
Afterwards, then with the speed of 25 ~ 40 DEG C/h with coming out of the stove after being furnace-cooled to 150-200 DEG C；
(6) through hardness, impact flexibility test selection qualified products；
(7) machined, grinding, assembling and dynamic balance check obtain a kind of grinding of multicomponent alloy again, and described more
The rack gear of first alloy abrasive sheet has the stratum granulosum on surface layer and the infiltration formed by stratum granulosum and the melting infiltration of parent metal liquid on surface layer
Permeable layers composition.
Preferably, metallic particles and non-metallic particle are selected from WC, TiN, TaC, AlB in the step (1)2、C、SiC、Cr、
Ni、Mo、Co、W、Re、SiO2、Al2O3、Si3N4And Na2B4O7•10H2At least one of O, the partial size of particle are 70 ~ 200 mesh.
Preferably, adhesive is black liquor in the step (1).
Preferably, the preparation of step (1) middle rack increases material system using existing molding manufacturing process or 3D printing
Make technique.
Preferably, parent metal liquid is HT200 molten metal or ZG310-570 molten metal in the step (3).
Preferably, in the step (5) stratum granulosum with a thickness of 1 ~ 3mm.
The black liquor includes the various wood pulp black liquor and draft black liquor in paper mill.
A kind of multicomponent alloy of surface with coarse grain is ground forming method, with different ratio, varigrained metallic particles and
The suitable adhesive of non-metallic particle addition prepares rack gear and is bonded in casting mold cavity surface, then with the casting of molten metal high temperature, metal
Liquid high temperature action makes multi-nary alloy particles and parent metal melt infiltration, and preparing to be formed on roll flute surface has compared with high impact properties
Can and high-wearing feature can hard multicomponent alloy layer, while the flank of tooth have certain coarse grain and micropore, in pulping process just like
Lower advantage:
(1) rack surface has certain coarse grain and micropore, in pulping process, increases rack gear coarse grain and micropore to fibre
The frictional force of dimension, promote fiber wire-dividing broom purification and interfibrous binding force；
(2) rack surface has certain coarse grain and micropore, in pulping process, in addition to having the rack gear side of conventional sheet
Except edge active force, the active force of rack surface is greatly improved, to save beating time and power consumption；
(3) rack surface has certain coarse grain and micropore, increases the mobile resistance of wad a quilt with cotton when mashing poly- fiber and cabo particle
Power keeps grinding more abundant, reduces the ratio without grinding, improves the regularity of raw material；
(3) rack surface has certain coarse grain and micropore, when high linear speed acts on fibrous raw material, improves specific fiber surface
Product faster, without excessively improving beating degree, improves fiber filter performance, helps to improve the bulk and suction of reconstituted tobacoo
The property received.
A kind of multicomponent alloy the present invention provides surface with coarse grain is ground forming method, can be with different ratio, difference
The suitable adhesive of metallic particles and the non-metallic particle addition of granularity prepares rack gear and is bonded in casting mold cavity surface, then with metal
The casting of liquid high temperature, molten metal high temperature action make multi-nary alloy particles and parent metal melt infiltration, prepare to be formed on roll flute surface
With the hard multicomponent alloy layer compared with high impact resistance and high-wearing feature energy, while the flank of tooth has certain coarse grain and micropore,
In pulping process, increase rack gear coarse grain and micropore to the frictional force of fiber, promotes the wire-dividing broom purification of fiber and interfibrous
Binding force.
The forming method makes this that multi-nary alloy particles and parent metal be made to melt infiltration, is conducive to prepare on roll flute surface
The hard multicomponent alloy layer having compared with high impact resistance and high-wearing feature energy is formed, so that the grinding rack surface has centainly
Coarse grain and micropore in pulping process, increase rack gear coarse grain since the grinding rack surface has certain coarse grain and micropore
With micropore to the frictional force of fiber, promote fiber wire-dividing broom purification and interfibrous binding force.
Detailed description of the invention
Fig. 1 is the invention structural schematic diagram obtained being ground；
Fig. 2 is the cross-sectional view of Fig. 1 middle rack, wherein 1. matrixes, 2. grooves, and 3. threaded holes, 4. rack gears, 41. stratum granulosums,
42. permeable formation.
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with specific embodiment.
Embodiment 1
A kind of multicomponent alloy grinding forming method of surface with coarse grain includes the following steps: as depicted in figs. 1 and 2
1) following each component: C=2% is weighed according to the proportion, WC=15%, Cr=30%, Cu=2%, Mn=1.2%, Si=
1%, Mo=0. 5%, B=5%, surplus Fe, the above each component is mass percent and each component particle is 100 mesh；
2) put into clean rustless steel container, be added the black liquor for accounting for about particle gross weight 5%, stirring 15 minutes so that
Each component is uniformly mixed；
3) existing molding manufacturing process is used, mixing material is fabricated to the 1-3mm thickness of required length and shape
4,60 DEG C of rack gear dryings are hardened 2 hours；
4) overlay film sand mold is made using core shooter, using overlay film sand mold as casting mold cavity；
5) type for rack gear 4 made of step 3) being bonded in overlay film sand mold is intracavitary, and mould assembling waits casting；
6) the fusing HT200 molten metal in intermediate frequency furnace, 1460 DEG C of tapping temperature；
7) under the conditions of 1380-1440 DEG C of temperature, the type for being poured into overlay film sand mold is intracavitary, and molten metal high temperature action makes rack gear
4 alloying pellet layer 41 and 1 molten metal of matrix (i.e. HT200 molten metal) melting is permeated, and permeable formation 42 is formed；
8) cooled to room temperature, sand removal obtain the grinding casting comprising bolt hole 3, rack gear 4 and groove 2；
9) grinding casting is subjected to ageing treatment, eliminates the internal stress of grinding, detailed process are as follows: will grinding casting 500 ~
600 DEG C after resistance furnace inside holding 3-5 hours, then with the speed of 30 DEG C/h with coming out of the stove after being furnace-cooled to 150-200 DEG C；
10) it is tested through hardness, impact flexibility, selection, grinding tooth face hardness reaches > HRC52 and grinding back side hardness <
HRC30 and impact flexibility >=4J/cm2For qualified products；
11) again it is machined, grinding, assembling and dynamic balance check, that is, complete the preparation process of grinding.
Embodiment 2
Other than using 140 mesh metals and non-metallic particle in step (1), other steps are identical with embodiment 1.
Embodiment 3
In addition to using existing 3D printing increasing material manufacturing technique in step (3), by mixing material be fabricated to required length and
The rack gear 4 of shape, other steps are the same as embodiment 1.
Embodiment 4
In addition in step (6) in intermediate frequency furnace melt ZG310-570 molten metal, 1560-1580 DEG C of tapping temperature；Step
Suddenly (7) are poured into overlay film sand mold type chamber at 1500-1520 DEG C, other steps are the same as embodiment 1.
The alloy abrasive sheet of the production of method listed by Application Example 1 to 4 is used in tobacco sheets by paper making method defibrination process, is used
Service life improves 50%, and the defibrination uniformity improves 30%, and piece rheobase improves 15%, and the disconnected paper number of paper machine reduces 30% or more.
As described above, the present invention can be better realized, above-described embodiment is only presently preferred embodiments of the present invention, not
Practical range for the purpose of limiting the invention；It is i.e. all according to equivalent changes and modifications made by the content of present invention, be all right of the present invention
It is required that range claimed is covered.
Claims (1)
1. a kind of multicomponent alloy of surface with coarse grain is ground forming method, which comprises the steps of:
(1) adhesive mixing is added in metallic particles and non-metallic particle and prepares rack gear, the quality of adhesive be metallic particles and
The 5% of non-metallic particle gross mass；Metallic particles and non-metallic particle concrete composition are as follows: C=2%, WC=15%, Cr=30%,
The partial size of Cu=2%, Mn=1.2%, Si=1%, Mo=0. 5%, B=5%, surplus Fe, metallic particles and non-metallic particle is
100 mesh or 140 mesh；The adhesive is black liquor；The preparation of the rack gear is increased using molding manufacturing process or 3D printing
Manufacture process；
(2) rack gear of preparation is bonded in casting mold cavity；
(3) parent metal liquid is melted, is poured into the casting mold cavity for being bonded with rack gear at 1300 DEG C -1780 DEG C；Parent metal
Liquid is HT200 molten metal or ZG310-570 molten metal；
(4) cooled to room temperature, sand removal obtain grinding casting；
(5) grinding casting is subjected to ageing treatment, detailed process are as follows: at 500 ~ 600 DEG C after resistance furnace inside holding 3-5 hours, so
Afterwards with the speed of 25 ~ 40 DEG C/h with coming out of the stove after being furnace-cooled to 150-200 DEG C；
(6) through hardness, impact flexibility test selection qualified products；
(7) machined, assembling and dynamic balance check obtain a kind of multicomponent alloy grinding again, and the multicomponent alloy is ground
Rack gear by the stratum granulosum on surface layer and being made of stratum granulosum and the permeable formation that is formed of parent metal liquid melting infiltration for surface layer；?
Granulosa with a thickness of 1 ~ 3mm.
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| CN201711180897.0A CN107876738B (en) | 2017-11-23 | 2017-11-23 | A kind of multicomponent alloy grinding forming method of the surface with coarse grain |
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| CN201711180897.0A CN107876738B (en) | 2017-11-23 | 2017-11-23 | A kind of multicomponent alloy grinding forming method of the surface with coarse grain |
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| CN107876738A CN107876738A (en) | 2018-04-06 |
| CN107876738B true CN107876738B (en) | 2019-08-13 |
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Citations (6)
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|---|---|---|---|---|
| CN101654888A (en) * | 2009-09-11 | 2010-02-24 | 华南理工大学 | Grinding sheet for disc grinder and manufacturing method thereof |
| CN102430743A (en) * | 2011-12-01 | 2012-05-02 | 昆明理工大学 | Method for preparing surface-layer composite by using cast-infiltration method |
| CN103769562A (en) * | 2014-01-22 | 2014-05-07 | 西安交通大学 | Preparation method for active element sintered ZTA (Zirconia Toughened Alumina) particulate reinforced steel based compound hammer |
| CN104209496A (en) * | 2014-07-24 | 2014-12-17 | 昆明理工大学 | Device and method for preparing particle-reinforced metal matrix surface composite material |
| CN105817605A (en) * | 2016-04-28 | 2016-08-03 | 西华大学 | Functionally-graded wear-resistant iron-based composite material and preparation method thereof |
| CN107336484A (en) * | 2017-07-05 | 2017-11-10 | 昆明理工大学 | A kind of ceramic/metal composite materials abrasion-proof backing block and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146080A (en) * | 1976-03-18 | 1979-03-27 | Permanence Corporation | Composite materials containing refractory metallic carbides and method of forming the same |
| US5824265A (en) * | 1996-04-24 | 1998-10-20 | J & L Fiber Services, Inc. | Stainless steel alloy for pulp refiner plate |
-
2017
- 2017-11-23 CN CN201711180897.0A patent/CN107876738B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654888A (en) * | 2009-09-11 | 2010-02-24 | 华南理工大学 | Grinding sheet for disc grinder and manufacturing method thereof |
| CN102430743A (en) * | 2011-12-01 | 2012-05-02 | 昆明理工大学 | Method for preparing surface-layer composite by using cast-infiltration method |
| CN103769562A (en) * | 2014-01-22 | 2014-05-07 | 西安交通大学 | Preparation method for active element sintered ZTA (Zirconia Toughened Alumina) particulate reinforced steel based compound hammer |
| CN104209496A (en) * | 2014-07-24 | 2014-12-17 | 昆明理工大学 | Device and method for preparing particle-reinforced metal matrix surface composite material |
| CN105817605A (en) * | 2016-04-28 | 2016-08-03 | 西华大学 | Functionally-graded wear-resistant iron-based composite material and preparation method thereof |
| CN107336484A (en) * | 2017-07-05 | 2017-11-10 | 昆明理工大学 | A kind of ceramic/metal composite materials abrasion-proof backing block and preparation method thereof |
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| CN107876738A (en) | 2018-04-06 |
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Inventor after: Wu Chaowei Inventor after: Yan Ying Inventor after: Li Jiankai Inventor after: Jiang Xiaojun Inventor after: Yan Zhen Inventor after: Jiang Simeng Inventor after: Sun Yu Inventor after: Luo Siwei Inventor after: Tian Xiaohui Inventor after: Luo Chong Inventor after: Xu Guijun Inventor after: Huang Hanping Inventor after: Zhang Litao Inventor after: Tian Yangyuan Inventor before: Wu Chaowei Inventor before: Yan Ying Inventor before: Li Jiankai Inventor before: Jiang Xiaojun Inventor before: Yan Zhen Inventor before: Jiang Simeng Inventor before: Sun Yu Inventor before: Luo Siwei Inventor before: Tian Xiaohui Inventor before: Luo Chong Inventor before: Xu Guijun Inventor before: Huang Hanping Inventor before: Zhang Litao Inventor before: Tian Yangyuan |
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Effective date of registration: 20200521 Address after: 461000 No. 666, golden leaf Road, Xuchang, Henan Co-patentee after: NANTONG HUAYAN CASTING Co.,Ltd. Patentee after: HENAN CIGARETTE INDUSTRIAL TOBACCO SLICE Co.,Ltd. Co-patentee after: Nantong Huayan grinding film Co., Ltd Address before: 461000 No. 666, golden leaf Road, Xuchang, Henan Co-patentee before: NANTONG HUAYAN CASTING Co.,Ltd. Patentee before: HENAN CIGARETTE INDUSTRIAL TOBACCO SLICE Co.,Ltd. |