CN103160679A - Explosion hardening method of high-manganese steel liner plate and movable cone and fixed cone of cone crusher - Google Patents
Explosion hardening method of high-manganese steel liner plate and movable cone and fixed cone of cone crusher Download PDFInfo
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- CN103160679A CN103160679A CN2013101248762A CN201310124876A CN103160679A CN 103160679 A CN103160679 A CN 103160679A CN 2013101248762 A CN2013101248762 A CN 2013101248762A CN 201310124876 A CN201310124876 A CN 201310124876A CN 103160679 A CN103160679 A CN 103160679A
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Abstract
The invention provides an explosion hardening method of a high-manganese steel liner plate and a movable cone and a fixed cone of a cone crusher. The explosion hardening method is characterized by comprising the steps of: cleaning, polishing and water-toughening the surface of a to-be-treated workpiece, thus preventing cracks; implementing primary explosion hardening treatment on the surface of the workpiece by a flexible explosive with high explosive velocity; and implementing secondary explosion hardening treatment on the surface of the workpiece after the primary explosion hardening treatment. The explosion hardening method is applicable to explosion hardening treatment on the high-manganese steel liner plate and cone crushing materials and the service life of the treated workpiece material can be prolonged remarkably.
Description
Technical field
The moving vertebra that the present invention relates to a kind of high manganese steel lining plate and cone crusher is decided the explosion hardening method of vertebra.
Background technology
High mangaenese steel has very strong work hardening capacity, high mangaenese steel spare withstand shocks with grinding in, wear and tear and distortion gradually in the surface, the work sclerosis appears at yield zone, certain fastness to wear is arranged, and in recent years, people have studied several different methods, as shot-peening, tungsten carbide button etc., improve the examination work-ing life of high manganese steel wear resistant part.But the sclerosis of these methods is surface effects mostly, and the degree of depth very shallow (less than 1mm) can not be given full play to the wear-resisting potentiality of material.
Explosion hardening is to lean on the interaction of explosive detonation and metallic surface to produce strong impact in the metallic surface, highdensity shockwave is propagated in metal, and metal lattice is distorted, and has changed the internal structure of metallic substance, the hardness of surface and deep layer metal is improved, and principle as shown in Figure 1.Process by explosion hardening, improved yield strength and the tensile strength of material, thereby improve shock-resistant wearing and tearing and the anti-deformation performance of material.When in impact energy hour, be equivalent to use wearing and tearing, wear rate is all substantially constant, keeps larger wear rate.Along with the increase of Single-impact Energy, when reaching certain cumlative energy, gouging abrasion speed diminishes on the contrary.This unusual phenomenon is peculiar by high mangaenese steel, is more namely that heavy loading high mangaenese steel is more wear-resisting, and explosion hardening utilizes this mechanism just.
High manganese steel frog surface explosive harden tech (200710061422.X).The high manganese steel frog surface explosion hardening treatment process of this disclosure of the invention is characterized in that: adopt the plasticity sheet explosive, its composition is RDX, and epoxy resin is binding agent, and quadrol is that solidifying agent and dibutyl phthalate are softening agent.The laying depth of plasticity sheet explosive is 3mm, and Number Of Bursts is 2 times, and explosion hardening is processed improved more than 30% the work-ing life of High Manganese Steel Frog.
The feature of the plastic plate shaped explosive charge of this disclosure of the invention of explosion hardening treatment process (200810080250) of a kind of high-manganese steel plate hammer and roller shell is: main explosive is hexogen 80%; Binding agent is epoxy resin 18.2%; Solidifying agent is quadrol 0.3%, and softening agent is dibutyl phthalate 1.5%.The pyrotechnic composition formula is sequentially: epoxy resin → quadrol → dibutyl phthalate → hexogen.The thickness that sticks of plastic plate shaped explosive charge is 4mm.Adopt the method can not only improve high mangaenese steel surface hardness and wear resistance, and manufacture craft is simple, can improve equipment availability efficient, saves great deal of steel.
Explosion hardening patent analyses from domestic announcement, all adopt and be similar to plastic plate shaped explosive charge in table 1, explosion velocity is about 6500m/s, and by the explosion hardening principle as can be known, the explosion velocity and the detonation pressure that put on high mangaenese steel are higher, its stress-strain that acts on high mangaenese steel inside is larger, the explosion hardening effect is better, therefore, is necessary to optimize explosive formulation, improving explosion velocity of explosive and detonation pressure, strengthen the explosion hardening effect.External report composition-60 explosive has good plasticity, is convenient to complex-curved high mangaenese steel workpiece explosion hardening construction, and explosion velocity also is significantly improved.
The bonding explosive property of table 1 common plastics
At present, the plastic plate shaped explosive charge is adopted in explosion hardening more, has good workability for surfacing or round and smooth workpiece, but the workpiece for complex surface, its workability is not good enough, the particularly just irregular casting of face, and its surface is rough and uneven in surface, unavoidably there are air in plastic plate shaped explosive charge and workpiece surface, have a strong impact on the explosion hardening effect.
In sum, existing explosion hardening method has the following disadvantages, and explosion velocity and the detonation pressure of the explosive of use are inadequate, and blast effectiveness is relatively poor.
Summary of the invention
The moving vertebra that the technical problem to be solved in the present invention is to provide a kind of high manganese steel lining plate and cone crusher is decided the explosion hardening method of vertebra.
The moving vertebra of high manganese steel lining plate of the present invention and cone crusher is decided the explosion hardening method of vertebra, is characterized in comprising the steps:
A, with pending workpiece surface clean, polishing, the tough processing of water, prevent that segmentation crack from producing.
B, carry out the explosive treatment for the first time of workpiece surface with the flexible explosive of high explosion velocity at workpiece surface.
C, carry out the subsequent explosion hardening treatment of workpiece surface on the workpiece surface that an explosion hardening is processed.
The formula of the flexible explosive of described high explosion velocity is: high explosive RDX or HMX89%～91%, caking agent polyisobutene 1.8%～2.5%, softening agent DOS 5.0%～5.6%, additive-treated oil 1.5%～1.7%.
Step b carries out the flexible explosive of high explosion velocity of the explosive treatment for the first time of workpiece surface and lays moulding by mean thickness 6 ㎜ at workpiece surface, the unit surface explosive consumption is 500 ㎎/㎝ 2, uses the 8# cap sensitive.
Step c carries out the flexible explosive of high explosion velocity of the subsequent explosion hardening treatment of workpiece surface and lays moulding by mean thickness 4 ㎜ on the workpiece surface that an explosion hardening is processed, the unit surface explosive consumption is 1000 ㎎/㎝ 2, uses the 8# cap sensitive.
In the present invention, the high explosive hexogen represents with RD X, or octogen represents with HMX.Method of the present invention adopts the flexible explosive of high explosion velocity, and the flexible explosive of high explosion velocity is laid on workpiece as " dough ", can effectively avoid the clearance between explosive and workpiece, simultaneously, has also improved explosion velocity and detonation pressure.After an explosion hardening was processed, the hardness that high manganese steel lining plate and circular cone are broken was brought up to 329HB by the 199HB before processing, and Eddy current inspection is brought up to 8mm by the 2mm before processing; After the subsequent explosion hardening treatment, the hardness that high manganese steel lining plate and circular cone are broken can be brought up to 372HB, and the degree of depth can be brought up to 16mm.Simplify blast technique, improved operating efficiency.
The high manganese steel material itself that the present invention adopts possesses the characteristic of when being subject to extraneous thump " self-hardening ".Utilized the self-hardening characteristic of high manganese steel material, before high manganese steel lining plate and the broken use of circular cone, with the mode of explosive charge, workpiece surface has been carried out thump, improved hardness and the Eddy current inspection of workpiece surface, thereby improve work-ing life.
Description of drawings
Fig. 1 carries out workpiece explosion hardening handling principle schematic diagram for what adopt method of the present invention;
Fig. 2 is explosion hardening curve and material surface hardness and the hardening depth comparison diagram of the embodiment of employing method of the present invention;
In figure: 6. explosion hardening curves of flexible explosive 3. workpiece of the high explosion velocity of 1.8# detonator 2., 7. subsequent explosion hardening curves.
Embodiment
The present invention is further described below in conjunction with drawings and Examples:
The moving vertebra of high manganese steel lining plate of the present invention and cone crusher is decided the explosion hardening method of vertebra, comprises the steps:
A, with pending workpiece surface clean, polishing, the tough processing of water, prevent that segmentation crack from producing.
B, at workpiece surface, the flexible explosive of high explosion velocity press mean thickness 6 ㎜ and lay moulding, the unit surface explosive consumption is 500 ㎎/㎝ 2, with 1 ignition of 8# detonator, carries out the blast explosive treatment for the first time of workpiece surface.
C, on an explosion hardening is processed workpiece 3 surfaces, the flexible explosive 2 of high explosion velocity press mean thickness 4mm laying moulding, the unit surface explosive consumption is 1000 ㎎/㎝ 2, uses the 8# cap sensitive, carries out the subsequent explosion hardening treatment of workpiece surface.
In Fig. 1, the 8# detonator 1 flexible explosive 2 of high explosion velocity that detonates, the flexible explosive 2 of high explosion velocity is made sliding detonation along the surface of workpiece 3, and the surface of UNDER SHOCK COMPRESSION workpiece 3 makes the surface of workpiece 3 produce sclerosis, thereby improves the wear resistance of high mangaenese steel workpiece.
Fig. 2 is explosion hardening curve and material surface hardness and the hardening depth comparison diagram of the embodiment of employing method of the present invention.In Fig. 2, X-coordinate represents high mangaenese steel workpiece surface hardening depth, and ordinate represents high mangaenese steel workpiece surface hardness.
The formula of the flexible explosive 2 of high explosion velocity is: pyrotechnic composition 90%(RDX or HMX), polyisobutene 2.2%), DOS 5.3%, lubricating oil 1.6%.Its explosion velocity is 8400m/S.
The flexible explosive preparation process of high explosion velocity at first in proportion with caking agent dissolving fully in benzene and chloroformic solution, then mixes softening agent and additive rear stand-by with it; Secondly, by formula rate, pyrotechnic composition being mixed making beating with water makes it fully moistening; Again, add dissolving good binding agent and plasticizer solution; At last, solvent is driven away in the decompression additional issue, and cooling suction filtration, washing, oven dry obtain flexible explosive product.
The workpiece that workpiece 3 adopts the workpiece high manganese steel lining plate conduct in the pulverizer of mine to be processed by explosion hardening.
Be 500 ㎎/㎝ with the flexible explosive 2 of high explosion velocity by mean thickness 6 ㎜ unit surface loadings
2Moulding is laid on surface at workpiece 3, ignites with 8# detonator 1, implements the explosion hardening processing on workpiece 3 surfaces.Workpiece 3 surface hardnesses and Eddy current inspection are brought up to respectively 329HB and 10mm, obtain explosion hardening curve 6 one time.Implementing workpiece 3 surface second explosion hardenings processes.Its workpiece 3 surface hardnesses and Eddy current inspection are brought up to respectively 379HB and 16mm, obtain subsequent explosion hardening curve 7.
The preparation of the flexible explosive 2 of high explosion velocity is with embodiment 1.
Its difference is the broken moving vertebra of the workpiece circular cone in workpiece 3 employing cone crushers, decides vertebra as the workpiece of being processed by explosion hardening.
The flexible explosive 2 of the high explosion velocity on workpiece 3 surfaces press mean thickness 4 ㎜, and the unit surface loadings is 1000 ㎎/㎝ 2, lays moulding on the surface of workpiece 3, with 1 ignition of 8# detonator.Implement the first and second explosion hardening processing on workpiece 3 surfaces.
The explosion hardening method that the moving vertebra of a kind of high manganese steel lining plate of the present invention and cone crusher is decided vertebra can be used for the explosion hardening of other similar high mangaenese steel workpiece to be processed.
Claims (4)
1. the moving vertebra of a high manganese steel lining plate and cone crusher is decided the explosion hardening method of vertebra, it is characterized in that comprising the steps:
A, with pending workpiece surface clean, polishing, the tough processing of water, prevent that segmentation crack from producing;
B, carry out the explosive treatment for the first time of workpiece surface with the flexible explosive of high explosion velocity at workpiece surface;
C, carry out the subsequent explosion hardening treatment of workpiece surface on the workpiece surface that an explosion hardening is processed.
2. the moving vertebra of high manganese steel lining plate according to claim 1 and cone crusher is decided the explosion hardening method of vertebra, it is characterized in that: the formula of the flexible explosive of described high explosion velocity is: high explosive RDX or HMX89%～91%, caking agent polyisobutene 1.8%～2.5%, softening agent DOS 5.0%～5.6%, additive-treated oil 1.5%～1.7%.
3. the moving vertebra of high manganese steel lining plate according to claim 1 and cone crusher is decided the explosion hardening method of vertebra, it is characterized in that: step b carries out the flexible explosive of high explosion velocity of the explosive treatment for the first time of workpiece surface and lays moulding by mean thickness 6 ㎜ at workpiece surface, the unit surface explosive consumption is 500 ㎎/㎝
2, use the 8# cap sensitive.
4. the moving vertebra of high manganese steel lining plate according to claim 1 and cone crusher is decided the explosion hardening method of vertebra, it is characterized in that: step c carries out the flexible explosive of high explosion velocity of the subsequent explosion hardening treatment of workpiece surface and lays moulding by mean thickness 4 ㎜ on the workpiece surface that an explosion hardening is processed, the unit surface explosive consumption is 1000 ㎎/㎝
2, use the 8# cap sensitive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310124876.2A CN103160679B (en) | 2013-04-12 | 2013-04-12 | Explosion hardening method of high-manganese steel liner plate and movable cone and fixed cone of cone crusher |
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| CN201310124876.2A CN103160679B (en) | 2013-04-12 | 2013-04-12 | Explosion hardening method of high-manganese steel liner plate and movable cone and fixed cone of cone crusher |
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| CN103160679B CN103160679B (en) | 2014-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116065009A (en) * | 2023-04-06 | 2023-05-05 | 北京理工大学 | Method and device for preparing gradient hardening black metal plate through high-temperature explosion hardening |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103847A (en) * | 1985-05-06 | 1986-11-05 | 冶金工业部长沙矿冶研究院 | Explosive hardening process for high manganese steel |
| CN101545035A (en) * | 2008-12-25 | 2009-09-30 | 太原科技大学 | Explosion hardening method for high-manganese steel plate hammer and roll sleeve |
-
2013
- 2013-04-12 CN CN201310124876.2A patent/CN103160679B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103847A (en) * | 1985-05-06 | 1986-11-05 | 冶金工业部长沙矿冶研究院 | Explosive hardening process for high manganese steel |
| CN101545035A (en) * | 2008-12-25 | 2009-09-30 | 太原科技大学 | Explosion hardening method for high-manganese steel plate hammer and roll sleeve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116065009A (en) * | 2023-04-06 | 2023-05-05 | 北京理工大学 | Method and device for preparing gradient hardening black metal plate through high-temperature explosion hardening |
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Effective date of registration: 20151228 Address after: Mianyang City, Sichuan Province, 621900 Mountain Road No. 64 Patentee after: Mianyang Tianqi Technology Co.,Ltd. Address before: 621900 Mianyang province Sichuan City Youxian Mianshan Road No. 64 Patentee before: MIANYANG CITY XINLINGYUAN ELECTRONIC Co.,Ltd. |
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Effective date of registration: 20220720 Address after: 621000 b412, entrepreneurship service center, No. 133, mianxing East Road, high tech Zone, Mianyang City, Sichuan Province Patentee after: Sichuan gankun Technology Co.,Ltd. Address before: Mianyang City, Sichuan Province, 621900 Mountain Road No. 64 Patentee before: Mianyang Tianqi Technology Co.,Ltd. |