CN203140056U - Fine crushing roller of wear crusher - Google Patents
Fine crushing roller of wear crusher Download PDFInfo
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- CN203140056U CN203140056U CN 201220631191 CN201220631191U CN203140056U CN 203140056 U CN203140056 U CN 203140056U CN 201220631191 CN201220631191 CN 201220631191 CN 201220631191 U CN201220631191 U CN 201220631191U CN 203140056 U CN203140056 U CN 203140056U
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Abstract
The utility model relates to the field of crusher, in particular to a fine crushing roller of wear crusher, which has high strength and is used for crushing calcium carbide, and comprises a roller base body and a welding layer covering on the whole surface of base body, wherein the base body is casted by 35CrMo steel, and the welding layer is formed by welding the wear-resistant material on the surface of base body, and the welding layer is composed of a plurality of welding passes parallel to the roller axial, and welding passes are uniformly, neatly, closely arranged on the surface of roller to radially form bulges uniformly arranged on the roller. The contact surface between the welding passes and the broken material is more smooth than the cracked teeth, and the integration of welding passes with the roller is not easy to be damaged; the base body is composed of anti-welding crack, wear-resistant and impact-resistant material, so that a new crushed surface can be re-set if any abrasion of the original crushed surface to achieve the effect of multiple use.
Description
Technical field
The utility model relates to field of cracking machine, and particularly a kind of high strength can carefully be broken roller for the wear-resisting disintegrating machine of calcium carbide fragmentation.
Background technology
Kibbler roll is a kind of equipment commonly used in the field of cracking machine, and its operation principle is that move toward one another is paid in the discaling roll formation work that a pair of surface is covered with tooth plate, between the material feeding discaling roll to be broken, utilizes the extruding force of roller tooth with the material fragmentation.Because the disintegrating machine of a crushing mechanism is difficult to satisfy the requirement of high yield, two-stage roll-type pellet disintegrating machine has just appearred in production practices, its crushing mechanism is that two groups of rollers that are arranged above and below also are that composition is paid in two work, material is after upper level roller (level work is paid) fragmentation, fall between the next stage roller (secondary work is paid), broken again, make material after double fragmentation, meet the requirements of granularity, calcium carbide disintegrating machine commonly used now just adopts this two-stage crumbling method basically.In the two-stage fragmentation of calcium carbide disintegrating machine, first order fragmentation is that the material with bulk is broken into 30-50 mm, and second level fragmentation is broken into material the finished product of 3-10 mm.Second level fragmentation is called thin broken again.Because it is much higher that the intensity of calcium carbide is compared with some traditional broken article such as coal, lime, the roller hardness of calcium carbide disintegrating machine also needs much higher.Chinese patent CN200820063490.X number a kind of calcium carbide disintegrating machine is disclosed, it is similarly two-stage fragmentation up and down, the broken roller surface of two-stage all is coated with tooth plate, broken material when the roller relative motion between the tooth plate and the crushing teeth on the roller form extruding and " cut and sting " power, with the material fragmentation.But " cut and sting " between the crushing teeth on the tooth plate and the material can make each crushing teeth be in for a long time from the top to comprehensive force-bearing situation of root with squeezed state, even tooth plate is made by high-abrasive material, still very easily be subjected to loss, in case and have a tooth situation of cisco unity malfunction to occur on the roller, just must change the monoblock tooth plate again, not only influence production efficiency, also improved production cost.Because what traditional calcium carbide disintegrating machine was taked is the mode that covers tooth plate on the roller, its roller is general to adopt traditional Q235B carbon structure steel substrate to make, after repeatedly using, its shock-resistant ability descends, the roller that must more renew, former roller can only reclaim in the mode of scrap iron, has strengthened the cost of enterprise, and forms the new wasting of resources.In recent years, a kind of wear-resisting roller mode of production of directly utilizing high-abrasive material to make roller and make crushing teeth at roller surface in the mode of milling has appearred again, in case but situation appears in this mode crushing teeth, whole roller all faces and can not use or the risk of processing again, all can exert an influence to production efficiency and the cost of enterprise.
Summary of the invention
The purpose of this utility model provides a kind of wear-resisting disintegrating machine for the calcium carbide disintegrating machine and carefully breaks roller, it no longer adopts tooth plate is installed on the roller, and crushing teeth carried out fragmentation as broken instrument, and provided a kind of new wear-resisting broken working face, the contact-making surface of itself and broken material is slicker and more sly than crushing teeth, and become one with roller, not fragile; And provide a kind of brand-new disintegrating machine roller matrix, it is made by anti-weld crack, wear-resisting, high impact material, even under the situation that wearing and tearing appears in its broken working face, new broken working face can be set on its surface again, thereby reach nonexpondable effect.
The utility model is realized by the following technical programs: a kind of wear-resisting disintegrating machine for the calcium carbide disintegrating machine carefully breaks roller, formed by roller matrix 1 and the overlay cladding 2 that covers on the matrix all surfaces, it is characterized in that: described matrix 1 selects for use 35CrMo steel matter to cast, to be high-abrasive materials in the mode of built-up welding be welded on the surface of matrix described overlay cladding 2 forms, it is made up of with the welding bead that roller axially parallels some, welding bead is even, neat at whole roller surface, closely arrangement, radially forms evenly distributed projection 3 at roller.
Further, the 35CrMo steel that described matrix 1 is selected for use, its S, P content (percentage by weight) are controlled respectively at (S≤0.015% P≤0.015%) below 0.015%.
Further, described high-abrasive material is selected special built-up welding working lining for use, guarantee its welding after component and the weight percentage ranges of each component be:
C 2.2-4.2 Mn 0.30-1.80 Si 1.20-2.80
Cr 17.0-25.0 W 2.0-6.0 Mo 0.5-3.0
V 0.2-1.0 Fe surplus
The desk-top hardness of HRC(national standard after the welding) be 60-65.
Further, described projection diameter is 6 mm.
Further again, the processing step of described built-up welding is as follows:
Machined is carried out on the surface of the roller matrix of a) casting being finished 1, guarantees that matrix surface is smooth, and zero defect, no rusty stain are done crank detection test to matrix before weldering, guarantees the inner no casting flaw of matrix;
B) before the weldering with roller substrate preheating to 80 ℃;
C) select special hardfacing working lining for use, built-up welding is two-layer, adopts open arc welding, gross thickness 6-8mm;
D) in the welding process, adopt the atomized water spray cooling, temperature is controlled at 80 ℃ to 150 ℃;
E) in the welding process, the side weld frontier inspection test postwelding welding bead the crackle situation, have or not situations such as bubble;
F) repair welding is carried out at irregular position, surface, guaranteed the overall appearance of welding bead;
G) check and affirmation surfacing hardness meet the demands.
Further, the two-layer concrete technology of built-up welding the processing step c of described built-up welding) is: ground floor, gage of wire are 2.4mm, welding current 420-440A, weldingvoltage 30-32V, speed of welding 18-28M/H, throat thickness 1-3mm; The second layer, gage of wire are 3.2mm, welding current 280-430A, weldingvoltage 28-30V, speed of welding 10-22M/H, throat thickness 3-6mm.
Beneficial effect
This disintegrating machine is broken roller carefully, and matrix selects for use 35CrMo steel matter to cast, and more traditional Q235B structural carbon steel material matrix has lower crack sensitivity and bigger shock resistance, is difficult for causing damage; It is welded on the mode of high-abrasive material with built-up welding on the surface of matrix, overlay cladding is made up of with the welding bead that roller axially parallels some, welding bead is even, neat at whole roller surface, closely arrangement, radially form evenly distributed projection at roller, these projectioies have just formed the broken working face of roller.Determined by bead-welding technology, the basic semicircular in shape of these protruding cross sections, the width of itself and matrix connecting portion is about semicircular diameter, therefore these broken working faces just become one with matrix bond securely, and these broken working faces are to be made by special high-abrasive material, and in the process of broken material, " cut and sting " of crushing teeth compared in semicircular extruding, the plane of disruption of the utility model roller is stressed more even, is difficult for impaired more.Because the utility model is to utilize protrusion arc face that welding forms as broken working face, and the diameter of welding rod is limited, so present technique more is applicable to calcium carbide thin broken that material is broken into 3-10 mm finished product.The disintegrating machine roller matrix that the utility model provides, make because of it and by high impact material, even occur under the situation of wearing and tearing at its broken working face, after original broken working face can also being removed the broken working face that built-up welding makes new advances is set on its surface again, also can directly weld the broken working face that makes new advances again on original working face surface, thereby reach nonexpondable effect.
The 35CrMo steel belongs to middle carbon high-alloy steel, and the tendency of quenching is big, and weldability is poor, is easy to generate crackle in the welding process, particularly multilayer welding.Be that matrix is when carrying out the build-up wear-resistant material with it, generally all need first built-up welding prime coat, but its welding performance makes it be easy to generate the crackle that influences bond strength, but the utility model roller must not allow it to have crackle to exist owing to will be in high strength fragmentation and the high duty of broken material hardness for a long time.The content of the general S of commercially available 35CrMo steel, P is in 0.035%, but through repeatedly judging the implant test of weld crack tendency, the inventor finds that the content of S, P of 35CrMo steel in 0.015%, can significantly reduce the weld crack tendency.Experimental result shows, when the content of 35crmo steel S, the P critical stress value 0.034% time is 25kgf/mm2, the content of S, P is 52kgf/mm2 at 0.015% o'clock critical stress value.Therefore, the control of the content of S, P below 0.015%, not needing just can be realized one of key of the few technique effect of built-up welding bottoming and built-up welding crackle.The control of S, P content mainly in the control of smelting process, is strengthened S, the P measure (smelting slag basicity etc. as improving, is well-known mature technology) of taking off when casting.
The employed special welding wire of present technique has low crack sensitivity, high wearability and shock resistance, and the composition (percentage by weight) after its welding is:
C 2.2-4.2% Mn 0.30-1.80% Si 1.20-2.80%
Cr 17.0-25.0% W 2.0-6.0% Mo 0.5-3.0%
V 0.2-1.0% Fe surplus.
Hardness after the welding is HRC60-65.
Select for use this welding wire can make the bead-welding technology technology of the utility model roller not need prime coat, and crackle is few, the bond strength height.
Layer thickness is 6-8mm after the utility model built-up welding, and the diameter that is formed for plane of disruption projection is 6mm.This scope makes that being used for welding procedure can realize technically with comparalive ease, can reach the crushing granularity requirement of regulation again.
In the bead-welding technology of the utility model roller, need before built-up welding, matrix to be preheated, and in weld deposit process, keep welding temperature between 80 ℃ to 150 ℃.If heating-up temperature is during less than 80 ℃, obscission can appear in overlay cladding and basic unit, strikes and will come off with hammer one slightly.Heating-up temperature is during greater than 150 ℃, and overlay cladding and base material melting welding are too dark, and the distortion of the too high uncontrollable base material of temperature.
Accurate gage of wire, welding current, voltage, speed etc. can guarantee to weld the technique effect that reaches the utility model requirement.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further set forth.
Fig. 1 is the cross sectional representation of an embodiment of the utility model;
Fig. 2 is Fig. 1 partial enlarged drawing.
Reference numeral is respectively: 1, matrix, 2, overlay cladding, 3, projection.
The specific embodiment
Embodiment 1: as shown in Figure 1 and Figure 2, the wear-resisting disintegrating machine that is used for the calcium carbide disintegrating machine carefully breaks roller, by roller matrix 1 and cover whole substrate 1 lip-deep overlay cladding 2 and form, matrix 1 selects for use 35CrMo steel matter to cast, and its S, P content are controlled respectively at (S≤0.015% P≤0.015%) below 0.015%; To be welding wires of will be on request making be welded on the surface of matrix 1 in the mode of built-up welding overlay cladding 2, form some welding beads that axially parallel with roller, welding bead is even, neat at roller surface, closely arrangement, radially forms evenly distributed projection 3 at roller, and protruding 3 diameters are approximately 6mm; The composition (percentage by weight) of special welding wire after its welding is:
C 2.2-4.2% Mn 0.30-1.80% Si 1.20-2.80%
Cr 17.0-25.0% W 2.0-6.0% Mo 0.5-3.0%
V 0.2-1.0% Fe surplus.
The desk-top hardness of HRC(national standard after the welding) be 60-65.
The concrete wear-resisting disintegrating machine carefully processing step of broken roller built-up welding is as follows:
Machined is carried out on the surface of the roller matrix of a) casting being finished 1, guarantees matrix 1 surfacing, and zero defect, no rusty stain are done crank detection test to matrix 1 before weldering, guarantees matrix 1 inner no casting flaw;
B) utilization is preheated to 80 ℃ with roller matrix 1 before even mode of arranging that electric furnace heats is welded around the matrix 1;
C) select for use special material to do the built-up welding working lining, built-up welding is two-layer, adopts open arc welding, gross thickness 6mm; Ground floor, gage of wire are 2.4mm, welding current 420-440A, weldingvoltage 30-32V, speed of welding 18-28M/H, the about 3mm of throat thickness; The second layer, gage of wire are 3.2mm, welding current 280-430A, weldingvoltage 28-30V, speed of welding 10-22M/H, the about 3mm of throat thickness;
D) in the welding process, adopt the atomized water spray cooling, temperature is controlled at 80 ℃ to 150 ℃;
E) in the welding process, the side weld frontier inspection test postwelding welding bead the crackle situation, have or not situations such as bubble;
F) repair welding is carried out at irregular position, surface, guaranteed the overall appearance of welding bead;
G) check and affirmation overlay cladding 2 hardness meet the demands.
This roller is through after using for a long time, even the situation of the broken work of roller surface surface wear occurred, because its matrix 1 adopts the 35CrMo steel, still have very strong impact resistance, again the working face that makes new advances of built-up welding after former working face can being removed, working face that also can directly built-up welding makes new advances on original working face is realized the repeated use function of roller.
Claims (2)
1. a wear-resisting disintegrating machine carefully breaks roller, formed by roller matrix (1) and the overlay cladding (2) that covers on matrix (1) all surfaces, it is characterized in that: described matrix (1) selects for use 35CrMo steel matter to cast, to be high-abrasive material in the mode of built-up welding be welded on the surface of matrix (1) described overlay cladding (2) forms, it is made up of with the welding bead that roller axially parallels some, welding bead is even, neat at whole roller surface, closely arrangement, radially forms evenly distributed projection (3) at roller.
2. wear-resisting disintegrating machine carefully breaks roller according to claim 1, and it is characterized in that: the diameter of described projection (3) is 6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631191 CN203140056U (en) | 2012-11-26 | 2012-11-26 | Fine crushing roller of wear crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631191 CN203140056U (en) | 2012-11-26 | 2012-11-26 | Fine crushing roller of wear crusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203140056U true CN203140056U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220631191 Expired - Lifetime CN203140056U (en) | 2012-11-26 | 2012-11-26 | Fine crushing roller of wear crusher |
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| Country | Link |
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| CN (1) | CN203140056U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921501A (en) * | 2012-11-26 | 2013-02-13 | 遂宁华能机械有限公司 | Fine crushing roller of wear-resisting crusher |
| CN108994482A (en) * | 2018-08-13 | 2018-12-14 | 芜湖鼎瀚再制造技术有限公司 | A kind of crusher's rollers bead-welding technology |
| CN111496415A (en) * | 2020-05-19 | 2020-08-07 | 大连华锐重工特种备件制造有限公司 | High-performance movable and fixed cone in cone crusher and preparation method thereof |
-
2012
- 2012-11-26 CN CN 201220631191 patent/CN203140056U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921501A (en) * | 2012-11-26 | 2013-02-13 | 遂宁华能机械有限公司 | Fine crushing roller of wear-resisting crusher |
| CN102921501B (en) * | 2012-11-26 | 2014-10-22 | 遂宁华能机械有限公司 | Fine crushing roller of wear-resisting crusher |
| CN108994482A (en) * | 2018-08-13 | 2018-12-14 | 芜湖鼎瀚再制造技术有限公司 | A kind of crusher's rollers bead-welding technology |
| CN111496415A (en) * | 2020-05-19 | 2020-08-07 | 大连华锐重工特种备件制造有限公司 | High-performance movable and fixed cone in cone crusher and preparation method thereof |
| CN111496415B (en) * | 2020-05-19 | 2024-04-12 | 大连华锐重工特种备件制造有限公司 | High-performance dynamic fixed cone in cone crusher and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |