CN115780743B

CN115780743B - Preparation method of high-wear-resistance high-manganese steel lining plate for shot blasting device and crusher

Info

Publication number: CN115780743B
Application number: CN202211433033.6A
Authority: CN
Inventors: 刘杰; 黄河; 孙涛; 刘阳; 滕文双
Original assignee: Weihai Hengli Wear Resistant Material Co ltd
Current assignee: Weihai Hengli Wear Resistant Material Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-07-18
Anticipated expiration: 2042-11-16
Also published as: CN115780743A

Abstract

The invention discloses a shot blasting device and a preparation method of a high-wear-resistance high-manganese steel lining plate for a crusher, which belong to the technical field of metal material processing, wherein the chemical components of the lining plate are as follows: 1.2 to 1.35 percent of C, 11.0 to 13.0 percent of Mn, 0.8 to 1.5 percent of Si, less than or equal to 0.089 percent of P, less than or equal to 0.02 percent of S, more than or equal to 10 percent of Mn/C and the balance of Fe; the preparation method comprises the following steps: (1) smelting and casting: smelting in an intermediate frequency induction furnace, wherein a layer of lime is filled at the bottom of the furnace when the furnace burden is charged, the mass of lime is less than 1% of the mass of the charged metal, the temperature in the furnace is raised to 1540 ℃, and slag covers the surface of molten steel all the time along with the appearance and the rising of molten metal. According to the preparation method of the high-wear-resistance high-manganese steel lining plate for the shot blasting device and the crusher, which are provided by the invention, the processed lining plate is produced through the steps, so that the hardness of the high-manganese steel lining plate can be improved, and the yield of the high-manganese steel lining plate is also improved in the smelting and casting process.

Description

Preparation method of high-wear-resistance high-manganese steel lining plate for shot blasting device and crusher

Technical Field

The invention relates to the technical field of metal materials, in particular to a preparation method of a high-wear-resistance high-manganese steel lining plate for a shot blasting device and a crusher.

Background

Along with the continuous expansion of the production scale of enterprises and the reduction of ore taste, the production capacity of the crusher is increased, and China gradually advances towards the large-scale direction of the crusher, so that the use of the crusher is not separated from the study of the high manganese steel lining plate.

In the production and processing process of the high manganese steel lining plate, smelting casting, heat treatment and shot blasting are required to be carried out, in the shot blasting process, automatic shot blasting is carried out by a shot blasting machine or manual shot blasting is carried out manually under the condition of wearing a protective tool, and the wear resistance, fatigue resistance and corrosion resistance of the high manganese steel lining plate after shot blasting are improved. However, the conventional shot blasting device can generate a lot of dust in the use process, the dust not only can reduce the cleanliness of the high manganese steel lining plate, but also can influence the working environment if the dust is directly discharged into the working environment, and the lung infection can be caused if workers inhale the dust for a long time. Although dust is absorbed by a dust suction device when a shot blasting device is used in the current production process of the high manganese steel lining plate, the absorption is not obvious.

Disclosure of Invention

The invention aims to provide a preparation method of a high-wear-resistance high-manganese steel lining plate for a shot blasting device and a crusher, which has the advantages that the performance of the high-manganese steel lining plate is improved, various indexes are improved, and the like, so as to solve the problems in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the preparation method of the high-wear-resistance high-manganese steel lining plate for the crusher comprises the following chemical components: 1.2 to 1.35 percent of C, 11.0 to 13.0 percent of Mn, 0.8 to 1.5 percent of Si, less than or equal to 0.089 percent of P, less than or equal to 0.02 percent of S, more than or equal to 10 percent of Mn/C and the balance of Fe; the preparation method comprises the following steps:

(1) Smelting and casting: smelting in an intermediate frequency induction furnace, wherein a layer of lime is arranged at the bottom of the furnace when furnace materials are charged, the mass of lime is less than 1% of the mass of charged metal materials, the temperature in the furnace is raised to 1540 ℃, and slag covers the surface of molten steel all the time along with the appearance and rising of molten metal; along with the melting, a proper amount of lime and fluorite can be added; pre-deoxidizing a lining plate in the furnace by precisely controlling the temperature and the heating time and the heat preservation time; adding quantitative high-carbon ferromanganese at 1640 ℃, deoxidizing by utilizing the oxidation chemical property of carbon, fully preheating at 800 ℃, standing after molten steel is discharged from a furnace, and controlling the temperature at 1390 ℃ during casting;

(2) And (3) casting cleaning: the casting is cast when the temperature of the casting is more than 450 ℃, the temperature of the casting after casting is cast cannot be lower than 450 ℃, then an acetylene gun is used for hot cutting of a casting head, and if the thickness is too large, a grinder can be used for cutting;

(3) And (3) water toughening treatment: raising the temperature below 700 ℃ according to the temperature raising speed of 40 ℃, raising the temperature by 120 ℃ after the temperature is higher than 700 ℃, preserving heat for 5 hours after the temperature reaches 1080 ℃, and then putting the casting into water from the furnace for cooling after preserving heat;

(4) Shot blasting: the shot blasting process was performed in a shot blasting apparatus for 30min.

As still further aspects of the invention: wherein, when ferromanganese is added in the step (2), the ferromanganese is added in batches and fully stirred after the ferromanganese is added; and (3) after the heat preservation in the step (3), putting the mixture into water within 2-2.5min, and ensuring the temperature not to be lower than 900 ℃.

As still further aspects of the invention: the shot blasting device used in the shot blasting treatment process comprises a supporting base, a processing mechanism and a shot blasting mechanism arranged at the rear side of the processing mechanism, wherein a translation mechanism and a driving device for pushing the translation mechanism to move are arranged in the shot blasting mechanism, the translation mechanism comprises a cross rod distributed along the width of the shot blasting mechanism and a fixed frame fixedly arranged in the middle of the cross rod, and symmetrically distributed stabilizing mechanisms are arranged on two sides of the cross rod.

As still further aspects of the invention: wherein, firm mechanism includes the roof with horizontal pole threaded connection, the both sides fixed mounting of roof bottom has the curb plate of symmetric distribution, and fixed mounting has the bottom plate on the other terminal surface of curb plate, and the gliding guide way of confession bottom plate is seted up to the both sides of peening mechanism, and the guide way distributes along peening mechanism's length, and has the U template in the bottom fixed mounting of guide way, extends to the inside of U template and slides in its inside through the bottom plate, can improve the stability when horizontal pole removes.

As still further aspects of the invention: wherein, the inside of fixed frame is provided with blows dirt mechanism, blow dirt mechanism including fixed mounting in the fixed frame inside and along fixed frame length distribution's guide bar, be provided with reset spring between the both sides of guide bar and the fixed frame inner wall, the sliding block has been cup jointed respectively in the both sides of guide bar, the top of sliding block is through two symmetrical distribution spliced pole fixedly connected with side extension to the connecting plate with fixed frame lateral wall butt, the top of stripper plate is provided with elastic material and makes the shape into parallelogram structure.

As still further aspects of the invention: the front end of the shot blasting mechanism is fixedly provided with a guide mechanism, the guide mechanism comprises a fixed plate fixedly arranged at the front end of the shot blasting mechanism, grooves which are distributed symmetrically left and right are formed in the fixed plate, the bottom of a sliding block is fixedly provided with guide posts which extend to the bottom wall of the groove and slide in the groove, an upper offset part, a middle buffer part and a lower offset part are formed in the upper narrow middle wide design of the groove, and a fixed frame is pushed by a driving device to move downwards on the shot blasting mechanism under the action of the stabilizing mechanism.

As still further aspects of the invention: wherein, the parallelogram structure can respectively form four states of M1, M2, M3 and M4 in the process of moving the fixing plate from top to bottom.

As still further aspects of the invention: wherein, the circular arc portion that the centre of a circle angle is 30 is offered to recess inside bottom both sides, and the guide post is provided with the bulge rather than corresponding on the terminal surface for circular arc portion.

As still further aspects of the invention: the upper offset portions and the lower offset portions are symmetrically distributed, and the path length of the middle buffer portion is smaller than one sixth of the path length of the upper offset portions.

As still further aspects of the invention: wherein, set up the through groove of symmetric distribution on the transversely opposite of fixed frame and with run through tank bottom wall fixed connection's backup pad, the removal groove has been seted up to the inside of backup pad, the connecting plate is provided with the articulated shaft in the pin joint department of being in contact with the removal groove, articulated shaft and removal groove butt, and the backup pad passes through the outside that runs through the groove and extend to the fixed frame.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the shot blasting device and the preparation method of the high-wear-resistance high-manganese steel lining plate for the crusher, the processed lining plate is produced through the steps, so that the hardness of the high-manganese steel lining plate can be improved, and meanwhile, the yield of the high-manganese steel lining plate is also improved in the smelting and casting process.

2. In this embodiment at the used shot-blasting machine of production high manganese steel welt, roof and bottom plate are the fillet design, and when the horizontal pole reciprocates under drive arrangement's effect, the smoothness when the horizontal pole removes can be improved in the fillet design to the curb plate in both sides all hugs closely with the lateral wall of guide way, thereby guaranteed the motion at horizontal pole both ends unanimous, realized horizontal pole both ends simultaneous movement, can not have the angle skew, avoid the phenomenon of card to produce. The bottom plate and the side plates can be made of hard alloy, so that the wear resistance of the bottom plate and the side plates is improved, and the service life of the bottom plate and the side plates is prolonged.

3. In the shot blasting device used for producing the high manganese steel lining plate in the embodiment, the continuously output air suction device moves synchronously along with the fixed frame, so that dust can be adsorbed and treated at different heights of a processing mechanism and at different stages of dust, and the dust treatment efficiency is improved.

4. In the shot blasting device used for producing the high manganese steel lining plate in the embodiment, through the design of the guide post and the groove, the movement of the fixed frame can be facilitated, the service life of the groove can be prolonged, and the horizontal force born by the shot blasting device is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the whole structure of a shot blasting apparatus according to the present invention;

FIG. 2 is a schematic perspective view of a shot peening mechanism according to the present invention;

FIG. 3 is a schematic perspective view of a translation mechanism on a peening mechanism of the present invention;

FIG. 4 is a schematic view of the translation mechanism of FIG. 3 at different angles according to the present invention;

FIG. 5 is an enlarged schematic view of the structure A of FIG. 4 according to the present invention;

FIG. 6 is a side cross-sectional view of a peening mechanism of the present invention;

FIG. 7 is a schematic view of the inside of the fixing frame structure of the present invention;

FIG. 8 is a schematic view of the structure of FIG. 7 at different angles according to the present invention;

FIG. 9 is an enlarged schematic view of the structure B of FIG. 7 in accordance with the present invention;

FIG. 10 is an enlarged schematic view of the structure C of FIG. 8 in accordance with the present invention;

FIG. 11 is a schematic diagram of a connection of a groove and a translation mechanism according to the present invention;

FIG. 12 is an enlarged schematic view of the structure D of FIG. 11 in accordance with the present invention;

FIG. 13 is a schematic diagram showing the stress between the groove and the guide post structure according to the present invention.

The symbol marks in the figures illustrate:

100. a shot blasting device; 10. a support base; 20. a processing mechanism; 30. a translation mechanism; 31. a cross bar; 32. a fixed frame; 40. a stabilizing mechanism; 41. a top plate; 42. a side plate; 43. a bottom plate; 44. a guide groove; 50. a dust blowing mechanism; 51. a guide rod; 52. a return spring; 53. a sliding block; 54. a connecting plate; 55. an extrusion plate; 55a, a parallelogram; 60. a guide mechanism; 61. a fixing plate; 62. a groove; 62a, upper offset; 62b, a middle buffer part; 62c, a lower offset; 62d, arc portions; 62e, a projection; 70. a through groove; 71. a support plate; 72. a moving groove; 73. and a hinge shaft.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

The invention provides a shot blasting device and a preparation method of a high-wear-resistance high-manganese steel lining plate for a crusher.

Example 1

The chemical components of the wear-resistant high manganese steel lining plate for the crusher are 1.2C, 11.0Mn, 0.8Si, P is less than or equal to 0.089, S is less than or equal to 0.02, mn/C is more than or equal to 10, and the balance is Fe.

The preparation method of the high-wear-resistance high-manganese steel lining plate for the crusher comprises the following steps:

smelting and casting: smelting in an intermediate frequency induction furnace, wherein a layer of lime is arranged at the bottom of the furnace when furnace materials are charged, the mass of lime is less than 1% of the mass of charged metal materials, the temperature in the furnace is raised to 1540 ℃, and slag covers the surface of molten steel all the time along with the appearance and rising of molten metal; along with the melting, a proper amount of lime and fluorite can be added; pre-deoxidizing a lining plate in the furnace by precisely controlling the temperature and the heating time and the heat preservation time; adding quantitative high-carbon ferromanganese at 1640 ℃, deoxidizing by utilizing the oxidation chemical property of carbon, fully preheating at 800 ℃, standing after molten steel is discharged from a furnace, and controlling the temperature at 1390 ℃ during casting;

and (3) casting cleaning: the casting is cast when the temperature of the casting is more than 450 ℃, the temperature of the casting after casting is cast cannot be lower than 450 ℃, then an acetylene gun is used for hot cutting of a casting head, and if the thickness is too large, a grinder can be used for cutting;

and (3) water toughening treatment: raising the temperature below 700 ℃ according to the temperature raising speed of 40 ℃, raising the temperature by 120 ℃ after the temperature is higher than 700 ℃, preserving heat for 5 hours after the temperature reaches 1080 ℃, and then putting the casting into water from the furnace for cooling after preserving heat;

in this embodiment, the mechanical properties of the wear-resistant high manganese steel lining board material are: tensile strength 762.8MPa, yield strength 483MPa, elongation 50%, impact toughness 220J/cm2, hardness 283HB.

Example two

The chemical components of the wear-resistant high manganese steel lining plate for the crusher are 1.35C, 13.0Mn, 1.5Si, P is less than or equal to 0.089, S is less than or equal to 0.02, mn/C is more than or equal to 10, and the balance is Fe.

in this embodiment, the mechanical properties of the wear-resistant high manganese steel lining board material are: tensile strength 702.1MPa, yield strength 500MPa, elongation 45%, impact toughness 196J/cm2 and hardness 255HB.

Therefore, in summary, the optimal composition of the high manganese steel sheet in the process is the first embodiment, and the smelting yield of the lining plate in the smelting and casting process is as high as 96% under the control of the temperature range of the first embodiment.

In the embodiment, the hardness of the high manganese steel lining plate subjected to the shot blasting is improved in a straight line, and a shot blasting device is used in the shot blasting process, and the shot blasting device uses a closed space to automate the shot blasting operation process, so that the automatic operation can save the time of shot blasting, the trend of the shot for shot blasting on the lining plates is uniform, the shot blasting angle and the shot blasting path of each lining plate after the shot blasting can be ensured to be consistent, and under the sealed condition, the human body is protected without manual participation.

As shown in fig. 1 and 2, the shot blasting device 100 for processing the high manganese steel lining plate comprises a supporting base 10, a processing mechanism 20 and a shot blasting mechanism arranged at the rear side of the processing mechanism 20, wherein the processing mechanism 20 comprises an observation window for observing the shot blasting progress and process of the internal high manganese steel lining plate and an operation pedal for controlling the operation of the shot blasting mechanism, and the on-off of shot blasting of the shot blasting mechanism can be controlled through the operation of the pedal, so that the effect of convenient control is realized.

As shown in fig. 3, the shot blasting mechanism employs a power source part common to the prior art, and a state of negative pressure is provided to the space inside the shot blasting mechanism by a negative pressure device, thereby improving the speed of shot discharge. On the basis of the prior art, the shot blasting mechanism further comprises a driving device fixedly installed on the end face close to the working mechanism 20, the driving device can comprise, but is not limited to, a pushing rod, the output end of the driving device is fixedly provided with a translation mechanism 30, the translation mechanism 30 comprises a cross rod 31 distributed along the width of the shot blasting mechanism and a fixed frame 32 fixedly installed in the middle of the cross rod 31, two sides of the cross rod 31 are provided with symmetrically distributed stabilizing mechanisms 40, the stabilizing mechanisms 40 comprise top plates 41 in threaded connection with the cross rod 31, two sides of the bottom of the top plates 41 are fixedly provided with symmetrically distributed side plates 42, the other end face of the side plates 42 is fixedly provided with bottom plates 43, two sides of the shot blasting mechanism are provided with guide grooves 44 for the bottom plates 43 to slide, the guide grooves 44 are distributed along the length of the shot blasting mechanism, and U-shaped plates are fixedly installed at the bottoms of the guide grooves 44, as shown in fig. 6. By extending the bottom plate 43 into the interior of the U-shaped plate and sliding therein, stability of the rail 31 when moving can be improved.

In order to improve the smoothness of the cross bar 31 during movement, the top plate 41 and the bottom plate 43 are designed as fillets, when the cross bar 31 moves up and down under the action of the driving device, the fillets can improve the smoothness of the cross bar 31 during movement, and the side plates 42 on both sides are tightly attached to the side walls of the guide grooves 44, so that the movement amounts of both ends of the cross bar 31 are consistent, synchronous movement of both ends of the cross bar 31 is realized, angular offset is avoided, and the occurrence of a clamping phenomenon is avoided.

The bottom plate 43 and the side plates 42 can be made of hard alloy, so that the wear resistance is improved, and the service life is prolonged.

The inside of fixed frame 32 is provided with blows dirt mechanism 50, blows dirt mechanism 50 and includes fixed mounting in fixed frame 32 inside and along fixed frame 32 length distribution's guide bar 51, is provided with reset spring 52 between the both sides of guide bar 51 and the fixed frame 32 inner wall, and the elastic coefficient of two reset springs 52 is the same, and the number of spring turns is unanimous. Sliding blocks 53 are respectively sleeved on two sides of the guide rod 51, one side of the return spring 52 is fixedly connected with the sliding blocks 53, the other side of the return spring 52 is fixedly connected with the inner wall of the fixed frame 32, the top of the sliding block 53 is fixedly connected with a connecting plate 54 with the side edge extending to be abutted against the side wall of the fixed frame 32 through two symmetrically distributed connecting columns, extrusion plates 55 are fixedly installed on opposite faces of the two connecting plates 54, and elastic materials are arranged above the extrusion plates 55 to form a parallelogram 55a structure, as shown in fig. 9.

The pressing plate 55 may be pressed or stretched by the connection plate 54 in the process of sliding the inside of the fixing frame 32 relatively or reversely, thereby changing the mechanism of the parallelogram 55a thereof and reducing or increasing the length and width of the inside thereof, and when the parallelogram 55a structure formed by the pressing plate 55 has an initial shape, the parallelogram 55a structure is restored to an original shape after each pressing and stretching, so that the parallelogram structure has the effect of sucking and discharging air.

When the webs 54 are separated from each other, the volume within the parallelogram 55a structure changes from small to large and then from large to small, and the parallelogram 55a structure is in a deflated state during the small to large process and in an inflated state.

In order to facilitate air intake and air suction of the parallelogram 55a structure, as shown in fig. 3, a unidirectional air outlet communicated with the parallelogram 55a structure is installed at the front end of the fixed frame 32, and a unidirectional air inlet is opened at the rear end of the fixed frame 32. The front end of the fixed frame 32 is fixedly provided with a shot blasting gun and an air suction pipe, the shot blasting gun is fixedly arranged on two sides of the fixed frame 32, the shot blasting gun consists of a plurality of discharging pipes, a feeding pipe is fixedly arranged above each shot blasting gun, the feeding pipe is connected with a shot blasting mechanism through a connecting hose, and the shot blasting gun can conveniently and synchronously move along with the fixed frame 32 through the design of the hose; the air suction pipe is fixedly arranged above the unidirectional air outlet, an air suction device is externally connected above the air suction pipe through a connecting pipe and a connecting hose, and stable suction force is provided through the air suction device, so that dust in the processing mechanism 20 can be sucked and removed.

As shown in fig. 4, 7 and 8, in order to better achieve the effect of removing dust, a guiding mechanism 60 is fixedly mounted at the front end of the shot blasting mechanism, the guiding mechanism 60 comprises a fixing plate 61 fixedly mounted at the front end of the shot blasting mechanism, grooves 62 distributed symmetrically left and right are formed on the fixing plate 61, guiding posts extending to the bottom wall of the grooves 62 and sliding inside the grooves are fixedly mounted at the bottoms of the sliding blocks 53, upper offset portions 62a, middle buffer portions 62b and lower offset portions 62c are formed by the upper and lower narrow middle wide designs of the grooves 62, the fixing frame 32 is pushed by a driving device to move downwards on the shot blasting mechanism under the action of the stabilizing mechanism 40, the upper offset portions 62a are acted by the guiding posts from an initial state, at this time, the sliding blocks 53 slide to two sides in the fixing frame 32, the volume of the parallelogram 55a structure is enlarged from small, in this process, the parallelogram 55a structure is in a suction state M1, and when the volume of the parallelogram 55a structure reaches the maximum, the middle position of the upper offset portions 62a, where the sliding blocks 53 walk;

then, as the sliding frame 32 continues to move, the volume of the parallelogram 55a structure is re-decreased from large, which is in the deflated state M2; when the fixed frame 32 moves to the middle buffer portion 62b, the sliding blocks 53 are not moved because the distance between the grooves 62 on both sides is not changed, the structure of the parallelogram 55a is kept at M2, when the fixed frame 32 continues to move downward, the position between the sliding blocks 53 inside the fixed frame 32 starts to shrink when the guide post comes to the lower offset portion 62c, the volume of the structure of the parallelogram 55a starts to become small and large, and the structure of the parallelogram 55a is in the suction state M3 because the grooves 62 are symmetrically distributed up and down, and thus moves to the middle position of the lower offset portion 62c, the volume of the parallelogram 55a returns to the maximum position, and when the parallelogram 55a moves downward again, the structure of the parallelogram 55a starts to become small, and is in the deflation state M4 until the structure moves to the lowermost end of the grooves 62. When the fixed frame 32 starts the return stroke, the state of the parallelogram 55a structure is reversed at this time.

The structures of the groove 62 and the guide post are shown in fig. 11 and fig. 12, two sides of the bottom end inside the groove 62 are provided with an arc portion 62d with a center angle of 30 degrees, the guide post is provided with a protruding portion 62e corresponding to the arc portion 62d on the end face opposite to the arc portion 62d, and the contact area between the guide post and the groove 62 is increased through the contact between the side wall of the protruding portion 62e and the arc portion 62d, so that the stress area between the guide post and the inner wall of the groove 62 is increased, and the groove 62 is further protected from being subjected to dispersion treatment when the force of the guide post is exerted, so that the deformation caused by the stress concentration of the groove 62 is avoided.

The force receiving condition between the convex portion 62e and the circular arc portion 62d is shown in fig. 13. When the guide column receives horizontal force, the force F is split into two parts F1 and F2 through the arc part 62d, the F1 is tangent to the inner wall surface of the groove 62, and the F2 is vertically distributed with the groove 62; respectively on the faces shown in fig. 13. The horizontal forces experienced by the groove 62 are split and shared compared to the vertical edges, and therefore the forces on the inner wall of the groove 62 are reduced, thereby achieving protection of the inner wall.

On the basis of the above, when the shot-blasting gun moves downward in synchronization with the fixed frame 32, a downward force is generated, and a low pressure environment is formed at the rear end thereof so that fine dust moves backward during the movement of the shot gun together with the fixing frame 32, referring to fig. 3;

the parallelogram 55a structure is in the M1 state, and air is sucked from the outside into the parallelogram 55a structure, so that dust can be accelerated to float upwards under the action of pressure difference due to the stage force from the stationary state of the fixed frame 32 to the moving state, and at this time, the parallelogram 55a structure cannot jet air outwards, and the flowing direction of the dust is influenced.

After the fixed frame 32 moves to a certain distance, the moving speed of the shot-blasting gun gradually tends to be stable, and at this time, the dust with larger particles is mixed with the small dust to fall downwards, and because the dust is in the M2 state, the air release state of the parallelogram 55a structure breaks the stable air flow around the shot-blasting gun, so that the disordered air flow continuously impacts the falling large-diameter particle impurities, and the small-diameter particles on the surface of the large-diameter particle impurities can be separated and float upwards, so that the large-diameter particle impurities can be absorbed by the air suction device.

When the fixed frame 32 moves to the middle buffer portion 62b, the air flow around the shot gun is restored to the stable state at this time, and the path of the middle buffer portion 62b is less than one sixth of the upper offset portion 62 a. In this process, the fixing frame 32 moves to the middle of the processing mechanism 20, where there is a lot of material between the large particle and the small particle floating force, and the impurities that tend to be free can be absorbed under the action of the middle buffer portion 62 b.

When the fixed frame 32 moves to the lower offset portion 62c, the parallelogram 55a is in a stable state, and the air suction device can absorb dust in the previous state M2; at this time, the parallelogram 55a is in the M3 state, and gas is inhaled from the outside into the inside. Stored into the parallelogram 55a structure for use in the next stage.

When the fixed frame 32 moves down to approach the bottom of the processing mechanism 20, there are many large-diameter particle dusts at the bottom of the processing mechanism 20, and missing small-diameter particle dusts are also attached to the large-diameter particles, and after the fixed frame 32 moves to the middle position of the lower offset portion 62c through the gas accumulated in the M3 state, the fixed frame 32 is in the M4 state, so that the space inside the processing mechanism 20 near the bottom thereof can be disturbed by the gas flow, and the dust at the bottom and the fallen large-diameter particles can be re-impacted, so that the suction device can better adsorb the dust in the processing mechanism 20.

Similarly, when the fixed frame 32 is in the return stroke, the parallelogram 55a structure is in the suction state, so that the suction device can have more time to absorb dust in the M4 state, and when the suction device is in the M4 state, the parallelogram 55a structure is in the deflation state again to interfere the airflow direction around the shot blasting gun, and in the return stroke, the suction and the discharge are combined to be used, so that the stable state and the disordered state can be continuously shown, the frequent switching of the two states is realized, and the tiny dust flowing downwards can be continuously disturbed by the airflow in the return stroke, so that the time remained in the air can be quickly prolonged. And then is absorbed by the air suction device through the air suction pipe.

Through the design of the groove 62 and the dust collection mechanism 50, dust generated in the processing mechanism 20 during the shot blasting process can be better absorbed, the hardness of the high manganese steel lining plate after absorption is improved, and the cleanliness on the high manganese steel lining plate is higher.

In order to allow the parallelogram 55a structure to move better inside the fixed frame 32, the fixed frame 32 is provided with symmetrically distributed through slots 70 and supporting plates 71 fixedly connected with the bottom wall of the through slots 70 on the opposite lateral sides, as shown in fig. 10. The inside of the support plate 71 is provided with a moving groove 72, the connection plate 54 is provided with a hinge shaft 73 at a hinge point in contact with the moving groove 72, the hinge shaft 73 abuts against the moving groove 72, and the support plate 71 extends to the outside of the fixed frame 32 through the penetrating groove 70. By changing the shape of the parallelogram 55a structure, the four connection plates 54 are connected inside the fixed frame 32 in a mutually hinged manner, and the parallelogram 55a can be more conveniently changed in structure under the design of the support plate 71.

Meanwhile, in order to improve the use rapidity of the shot blasting device, a door plate design and a feed opening design in the prior art are adopted, as shown in fig. 2.

In the description of the present invention, it should be understood that the directions or positional relationships such as the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, in the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims

1. The utility model provides a high wear-resisting high manganese steel welt's for breaker shot-blasting machine, includes support base (10), processing agency (20) and installs the shot-blasting machine of processing agency (20) rear side constructs, the inside of shot-blasting machine constructs is provided with translation mechanism (30) and promotes the drive arrangement of translation mechanism (30) motion, translation mechanism (30) include along the horizontal pole (31) of shot-blasting machine width distribution and in the fixed frame (32) of fixed mounting in the middle of horizontal pole (31), the both sides of horizontal pole (31) are provided with symmetrical distribution's stabilizing mechanism (40);

the stabilizing mechanism (40) comprises a top plate (41) in threaded connection with the cross rod (31), two sides of the bottom of the top plate (41) are fixedly provided with symmetrically distributed side plates (42), the other end face of each side plate (42) is fixedly provided with a bottom plate (43), two sides of the shot blasting mechanism are provided with guide grooves (44) for the bottom plates (43) to slide, the guide grooves (44) are distributed along the length of the shot blasting mechanism, the bottom of the guide grooves (44) is fixedly provided with a U-shaped plate, and the bottom plate (43) extends into the U-shaped plate and slides in the U-shaped plate, so that the stability of the cross rod (31) during movement can be improved;

the inside of fixed frame (32) is provided with dust blowing mechanism (50), dust blowing mechanism (50) are including fixed mounting in fixed frame (32) inside and along guide bar (51) that fixed frame (32) length distributes, be provided with reset spring (52) between the both sides of guide bar (51) and fixed frame (32) inner wall sliding block (53) have been cup jointed respectively to both sides of guide bar (51), the top of sliding block (53) is through two symmetrical distribution spliced pole fixedly connected with connecting plate (54) that the side extends to with fixed frame (32) lateral wall butt, two fixed mounting squeeze plate (55) on the opposite face of connecting plate (54), the top of squeeze plate (55) is provided with elastic material and makes into shape parallelogram (55 a) structure;

guiding mechanism (60) is fixedly arranged at the front end of the shot blasting mechanism, the guiding mechanism (60) comprises a fixed plate (61) fixedly arranged at the front end of the shot blasting mechanism, grooves (62) symmetrically distributed in the left and right are formed in the fixed plate (61), guiding columns extending to the bottom wall of the grooves (62) and sliding in the grooves are fixedly arranged at the bottoms of the sliding blocks (53), upper offset portions (62 a), middle buffer portions (62 b) and lower offset portions (62 c) are formed in the upper narrow middle and the lower narrow middle of the grooves (62), and the driving device pushes the fixed frame (32) to move downwards on the shot blasting mechanism under the action of the stabilizing mechanism (40).

2. The shot blasting apparatus of a high wear resistant high manganese steel liner for a crusher according to claim 1, wherein the parallelogram (55 a) structure forms four states of a suction state M1, a discharge state M2, a suction state M3 and a discharge state M4, respectively, during the movement of the fixing plate (61) from top to bottom.

3. The shot blasting apparatus of a high wear-resistant high manganese steel liner for a crusher according to claim 1, wherein both sides of the inner bottom end of the groove (62) are provided with arc portions (62 d) having a center angle of 30 °, and the guide post is provided with a projection (62 e) corresponding to the arc portions (62 d) on an end face thereof.

4. The high wear resistant high manganese steel liner blasting apparatus for a crusher of claim 2, wherein the upper offset portion (62 a) and the lower offset portion (62 c) are symmetrically distributed, and the path length of the middle buffer portion (62 b) is less than one sixth of the upper offset portion (62 a).

5. The shot blasting device of a high-wear-resistance high-manganese steel lining plate for a crusher according to claim 1, wherein symmetrically distributed penetrating grooves (70) and supporting plates (71) fixedly connected with the bottom walls of the penetrating grooves (70) are formed in the transverse opposite surfaces of the fixed frame (32), moving grooves (72) are formed in the supporting plates (71), hinge shafts (73) are arranged at hinge points where the connecting plates (54) are in contact with the moving grooves (72), the hinge shafts (73) are abutted with the moving grooves (72), and the supporting plates (71) penetrate through the penetrating grooves (70) to extend to the outer sides of the fixed frame (32).

6. A method for preparing a high wear-resistant high manganese steel lining plate for a crusher, which is applied to the shot blasting device of the high wear-resistant high manganese steel lining plate for the crusher, and is characterized by comprising the following steps of

The lining board comprises the following chemical components: 1.2 to 1.35 percent of C, 11.0 to 13.0 percent of Mn, 0.8 to 1.5 percent of Si, less than or equal to 0.089 percent of P, less than or equal to 0.02 percent of S, more than or equal to 10 percent of Mn/C and the balance of Fe; the preparation method comprises the following steps:

7. The method for producing a high wear-resistant high manganese steel liner for a crusher according to claim 6, wherein the ferromanganese is added in the step (2) in a batch manner and sufficiently stirred after the addition; and (3) after the heat preservation in the step (3), putting the mixture into water within 2-2.5min, and ensuring the temperature not to be lower than 900 ℃.