Arc lining plate processing die
Technical Field
The utility model relates to a mold processing technology field, more specifically say, relate to an arc welt mold processing.
Background
The arc lining plate is an important wear-resistant part installed on the concrete mixer, the cross section of the arc lining plate is arc-shaped, the arc lining plate comprises an inner arc surface and an outer arc surface, the outer arc surface is provided with an installation boss, and the middle part of the arc lining plate is provided with an installation hole. The arc lining plate is obtained by a casting method, and a casting deforms due to pouring and shrinkage in the casting process, so that the arc degree of the arc lining plate is unqualified and the arc lining plate needs to be corrected.
The arc lining plate is made of high-chromium cast iron BTMCr20, and at normal temperature, the matrix structure is as follows: martensite + carbide + retained austenite + troostite (or pearlite), which belongs to a brittle material and has poor plasticity, and can be fractured if the calibration operation is carried out at normal temperature; however, the pearlite transformation temperature of the high-chromium cast iron BTMCr20 is less than 750 ℃, and when the high-chromium cast iron arc lining plate is heated to 750-800 ℃ and is kept warm for a period of time, the matrix structure of the arc lining plate can be completely transformed into pearlite. When the matrix structure is completely transformed into pearlite, the plasticity is relatively high, and the matrix structure is corrected, so that the matrix structure is not broken, and the required acting force is relatively small; after the arc lining plate is corrected, the acting force is kept to keep the shape of the arc lining plate unchanged, and then the arc lining plate is rapidly cooled, so that the arc degree of the arc lining plate is prevented from rebounding after being corrected, and the arc degree of the arc lining plate is qualified.
A plurality of middle liner plate processing molds are disclosed in the prior art, such as the invention and the creation name: the scheme discloses a pressure type arc bending machine for one-step forming (application date: 2017, month 11; application number: 201720836805.9). the pressure type arc bending machine for one-step forming comprises a female die, a working table, a male die, a hydraulic telescopic rod, a sliding groove and a sliding block, wherein the male die and the female die are arranged on the upper end face of the working table, the female die is fastened on the working table by bolts, the lower surface of the male die is connected with the top end of the sliding block by bolts, and the sliding block is slidably connected in the sliding groove formed in the working table; the male die and the female die are both plates, and the opposite edges of the male die and the female die are of complementary arc structures, so that the male die and the female die can be molded at one time according to the material of a pre-buried groove workpiece and the radian of the well-designed die without repeated debugging and correction.
In addition, the invention and creation name is: the scheme discloses an arc-shaped workpiece processing die and a processing method thereof (application date: 2016, 12, 19 and 201611179635.8), wherein the die comprises a male die and a female die, the male die is formed by overlapping a plurality of male die sheets of which the lower ends are in a convex arc shape and the upper ends are die handles, and the female die is formed by overlapping a plurality of female die sheets of which the upper ends are in a concave arc shape and the lower ends are die bottoms. The die handle that the bender corresponds is installed to a plurality of die pieces, die piece ground that not only saves time and economize the material, and can conveniently be with processing a plurality of die pieces, in the recess, and in to overlapping back with bolt and nut fastening, need not to use large-scale hoisting machine just can easily install the terrace die, the die on the bender, and can be according to waiting to process the work piece width increase and decrease die piece, die piece quantity, divide into the base segmental arc at middle part with the convex arc of die piece and the concave arc of die piece simultaneously, the resilience segmental arc of both sides, the straight section in the outside, make the radius of arc of base segmental arc be greater than the radius of arc of resilience segmental arc, the resilience angle of control resilience segmental arc and the tangent department of straight section is 0-5, guarantee also can not change its accurate arc size after the arc work piece that processing came out rebounds, make things convenient for follow-up installation.
However, the arc lining plate is heated at a high temperature during processing, so that the lining plate processing mold cannot cool the arc lining plate; therefore, how to correct the radian of the arc lining plate is a problem to be solved urgently in the prior art.
SUMMERY OF THE UTILITY MODEL
1. Problems to be solved
The utility model aims to overcome prior art, welt mold processing can not carry out the not enough of rectifying to the arc welt, provides an arc welt mold processing, carries out the radian after rectifying to the arc welt and cools off it, and then can guarantee that the radian of arc welt is not kick-backed, ensures that the circular arc degree of arc welt is qualified.
2. Technical scheme
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
the utility model discloses an arc lining plate processing die, which comprises a fixed die and a movable die, wherein the fixed die is provided with a concave working surface, and the movable die is provided with a convex working surface; the concave working surface and the convex working surface are matched to clamp the arc lining plate, so that the arc lining plate can be further subjected to radian correction. Wherein, cover half and movable mould still are provided with cooling channel respectively, and this cooling channel is used for letting in cooling water and cools off the arc welt, and then can guarantee that the radian of arc welt does not kick-back, ensures that the circular arc degree of arc welt is qualified.
As a further improvement of the utility model, the fixed die and the movable die are respectively provided with a water inlet and a water outlet which are arranged at the same side or different sides, and a cooling channel and a hose are arranged between the water inlet and the water outlet; cooling water enters from the water inlet and is discharged from the water outlet through the cooling channel and the hose, so that the arc lining plate is rapidly cooled.
As the utility model discloses improve still further, the both ends of spill working face are equipped with horizontal stopper respectively, and the top of spill working face is provided with vertical spacing platform to can fix a position the arc welt, can fix the arc welt on the cover half firmly promptly, and then can carry out the radian correction to the arc welt.
As the utility model discloses improve still further, the cover half still is provided with the recess, and the recess is located the center of spill working face, and this recess can cooperate with the installation boss of arc welt to make the outer arc surface of spill working face and arc welt contact completely.
As the utility model discloses improve still further, cover half and movable mould are respectively through flange mounting on the workstation, and the workstation is equipped with drive unit, and this drive unit is connected with the movable mould, and this drive unit drive movable mould rectifies the radian of arc welt. Further, the worktable is an oil press.
Drawings
FIG. 1 is a schematic structural view of an arc lining plate processing mold of the present invention;
fig. 2 is a schematic structural view of the arc lining plate of the present invention;
FIG. 3 is a front view of the fixed mold of the present invention;
FIG. 4 is a side view of the fixed mold of the present invention;
FIG. 5 is a front view of the movable mold of the present invention;
FIG. 6 is a side view of the movable mold of the present invention;
FIG. 7 is a front view of a stationary mold according to example 2;
FIG. 8 is a front view of the movable mold according to embodiment 2.
The reference numerals in the schematic drawings illustrate: 100. fixing a mold; 110. a concave working surface; 120. a transverse limiting block; 130. a longitudinal limiting table; 140. a groove;
200. moving the mold; 210. a convex working surface;
300. a cooling channel; 310. a water inlet; 320. a water outlet; 330. a hose; 340. and (4) a flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; moreover, the embodiments are not relatively independent, and can be combined with each other according to needs, so that a better effect is achieved. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
Referring to fig. 1, the arc lining plate processing mold of the present invention includes a fixed mold 100 and a movable mold 200, the fixed mold 100 is provided with a concave working surface 110 (as shown in fig. 3 and 4), and the concave working surface 110 contacts with the outer arc surface of the arc lining plate. It is worth mentioning that the fixed mold 100 is further provided with a groove 140, and the groove 140 is positioned at the center of the concave working surface 110; the groove 140 mates with the mounting boss of the arc liner to allow the concave working surface 110 to fully contact the outer arcuate surface of the arc liner (as shown in fig. 2), thereby facilitating the processing of the arc liner. Further, the movable mold 200 is provided with a convex working surface 210 (shown in fig. 5 and 6) which is engaged with the concave working surface 110, and it is worth to be noted that the convex working surface 210 is in contact with the inner arc surface (shown in fig. 2) of the arc liner; the concave working surface 110 of the fixed die 100 is matched with the convex working surface 210 of the movable die 200, i.e. the arc lining plate can be clamped between the fixed die 100 and the movable die 200, and further the radian of the arc lining plate can be corrected.
It should be noted that, before carrying out the radian correction to the arc welt, need heat the arc welt to the uniform temperature for the arc welt is difficult for the fracture when the radian is rectified, consequently is using the utility model discloses a mould carries out the radian to the arc welt and rectifies the back, needs cool off the arc welt. Therefore, the utility model discloses a cover half 100 and movable mould 200 still are provided with cooling channel 300 respectively among the mold processing, and this cooling channel 300 is used for letting in the cooling water and cools off the arc welt, and then can guarantee that the radian of arc welt is not kick-backed, ensures that the circular arc degree of arc welt is qualified.
In addition, the fixed mold 100 and the movable mold 200 are provided with a water inlet 310 and a water outlet 320, respectively, and a cooling passage 300 is provided between the water inlet 310 and the water outlet 320. Specifically, in this embodiment, the water inlet 310 and the water outlet 320 are disposed on the same side (as shown in fig. 3 and fig. 5), and a hose 330 is further disposed between the water inlet 310 and the water outlet 320. In the present embodiment, the fixed mold 100 and the movable mold 200 are respectively provided with 4 cooling channels 300, and the cooling channels 300 are longitudinally and equidistantly arranged inside the fixed mold 100 and the movable mold 200; the process of cooling the arc lining plate specifically comprises the following steps: the cooling water enters the cooling channels 300 from the water inlet 310, the adjacent two cooling channels 300 are connected through the hose 330 (as shown in fig. 3 and 5), and the cooling water is discharged from the water outlet 320 through the cooling channels 300 and the hose 330, so that the arc lining plate can be rapidly cooled.
The utility model discloses an arc welt mold processing, cover half 100 and movable mould 200 are installed on the workstation through flange 340 respectively, and it is worth explaining that the workstation is equipped with drive unit, and this drive unit is connected with movable mould 200, and this drive unit drive movable mould 200 rectifies the radian of arc welt. It is worth to be noted that the arc lining plate of the embodiment is made of high-chromium cast iron; the specific process of radian correction is carried out to the arc welt to the mold processing of this embodiment is: firstly, mounting a fixed die 100 and a movable die 200 on a workbench, then placing an arc lining plate heated to 750-800 ℃ on the fixed die 100, then driving the movable die 200 to move by a driving unit of the workbench, so that a convex working surface 210 of the movable die 200 is completely contacted with an inner arc surface of the arc lining plate, and simultaneously, maintaining pressure by the driving unit; cooling the arc lining plate by using cooling water in the pressure maintaining process, and measuring the temperature of the surface of the arc lining plate at the same time, wherein an infrared thermometer is used for measuring the temperature in the embodiment; when the surface temperature of the arc lining plate is lower than 400 ℃, the driving unit drives the movable mold 200 to move away from the arc lining plate, and finally the arc lining plate is taken out. It should be further noted that the stationary mold 100 and the movable mold 200 of the present embodiment are made of heat-resistant steel, and the working table of the present embodiment is a hydraulic press, specifically, the hydraulic press is a 100 ton four-column hydraulic press.
Example 2
Referring to fig. 7 and 8, the present embodiment is basically the same as embodiment 1, except that: the two ends of the concave working surface 110 of this embodiment are respectively provided with the transverse stoppers 120 (as shown in fig. 3 and 7), and specifically, the two ends of the concave working surface 110 in the transverse direction are respectively provided with the transverse stoppers 120, so that the arc lining plate can be positioned, and the arc lining plate can be prevented from moving in the transverse direction during the calibration process. Furthermore, the top end of the concave working surface 110 is provided with the longitudinal limiting platform 130 (as shown in fig. 3 and 7), it should be noted that the top end of the concave working surface 110 is provided with the longitudinal limiting platform 130, that is, one longitudinal end of the concave working surface 110 is provided with the longitudinal limiting platform 130, the longitudinal limiting platform 130 is a boss, an arc lining plate can be positioned, and longitudinal movement of the arc lining plate in the correction process can be avoided, in this embodiment, one end of the concave working surface 110 close to the water inlet 310 is provided with the longitudinal limiting platform 130. It should be noted that the lateral limiting blocks 120 and the longitudinal limiting table 130 can position the arc lining plate, that is, the arc lining plate can be firmly fixed on the fixed mold 100, and further the arc correction can be performed on the arc lining plate.
Further, the water inlet 310 and the water outlet 320 of the present embodiment are disposed on opposite sides, in the present embodiment, the fixed mold 100 and the movable mold 200 are respectively provided with 3 cooling channels 300, and the 3 cooling channels 300 are longitudinally and equidistantly arranged inside the fixed mold 100 and the movable mold 200; the cooling water is discharged from the water outlet 320 through the cooling passage 300 and the hose 330, thereby achieving rapid cooling of the arc liner.
The invention has been described above in detail with reference to specific exemplary embodiments. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined by the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to illustrate the present state of the art and the meaning of the present development and is not intended to limit the present invention or the present application and the field of application of the present invention.