CN201020523Y - A kind of electroslag remelting mold steel casting mold - Google Patents

Abstract

An electroslag remelting mold steel casting mold, which includes an upper casting mold and a lower casting mold, an electroslag ingot cavity is arranged between the upper casting mold and the lower casting mold, and the upper casting mold is covered on the lower casting mold. It is characterized in that : The upper casting mold is the upper metal template, the lower casting mold is the lower metal template and the refractory material cavity body together, the refractory material cavity body is provided with a runner, an octagonal refractory brick cavity and two inner runners There are two upper mold cavities on the upper metal formwork, two lower mold cavities on the lower metal formwork, and one end of the two lower mold cavities communicates with the two in-runner cavities of the refractory cavity; the upper metal formwork The two upper mold cavities of the lower metal template are respectively paired with the two lower mold cavities of the lower metal template to form two electroslag ingot mold cavities. A sprue cup body made of refractory material having a sprue cup and a sprue may also be provided. The electroslag remelting mold steel casting mold has fewer casting procedures, good product quality and high production efficiency.

Description

A kind of electroslag remelting mold steel casting mold

technical field

The utility model relates to an electroslag remelting mold steel casting mold.

Background technique

Die steel is the material steel used in equipment used to deform materials in press processing or other forming processes. The manufacturing steps are generally smelting, blanking, spheronizing, electroslag remelting, forging, machining, and heat treatment in sequence. Casting is a necessary process for forming mold steel. Due to the large shape, generally about 2 meters long and about Φ160 mm in diameter, the existing mold steel electrode billet casting adopts sand mold casting, one case for one casting, large sand consumption, high cost, numerous processes, long manufacturing cycle, and often Casting defects such as pores, sand holes, sand collapse, and sand inclusions appear, which directly affect the operation and quality of the next process.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the existing electroslag remelting mold steel casting mold, the utility model provides an electroslag remelting mold steel casting mold with less casting process, good product quality and high production efficiency.

The electroslag remelting mold steel casting mold includes an upper casting mold and a lower casting mold. There is an upper parting surface under the upper casting mold, and a lower parting surface on the lower casting mold. The upper casting mold is covered on the lower casting mold. The molding surface overlaps with the lower parting surface, and there is an electroslag ingot cavity between the upper casting mold and the lower casting mold. The diameter of the electroslag ingot cavity is Φ120mm-Φ300mm, and the length is 1800mm-3000mm. It is characterized in that: said upper casting mold is an upper metal formwork, said lower casting mold is a lower metal formwork and a refractory material cavity body together, and the refractory material cavity body is provided with a runner, an octagonal refractory Brick cavity and two inrunner cavities, the runner is set at one end of the two inrunner cavities and communicates with the two inrunner cavities, and the octagonal refractory brick cavity is set in the middle of the runner , The refractory cavity is composed of refractory brick tubes. There are two upwardly concave longitudinal upper mold cavities on the upper parting surface of the upper metal formwork, and several risers communicating with the upper mold cavity are also provided. There are locking flanges on the lower edges of both sides of the upper metal formwork. The upper parting surface is lower than the locking flange. There are two downwardly concave longitudinal lower mold cavities on the lower parting surface of the lower metal formwork, and one end of the two lower mold cavities communicates with two in-runner cavities of the refractory material mold cavity respectively. The two upper mold cavities of the upper metal template are respectively paired with the two lower mold cavities of the lower metal template to form two electroslag ingot mold cavities. The length of the upper metal formwork is less than or equal to that of the lower metal formwork, and the runner, the octagonal refractory brick cavity and the two inner runner cavity are outside the covering surface of the upper metal formwork.

The above-mentioned electroslag remelting mold steel casting mold is characterized in that: a sprue cup body made of refractory material is also arranged, a sprue cup and a sprue are arranged in the sprue cup body, and the sprue cup body is installed on a refractory material type On the cavity body, the lower end of the sprue of the sprue cup communicates with the octagonal refractory brick cavity of the refractory cavity.

Above-mentioned electroslag remelting mold steel casting mold is characterized in that: the cross-sectional area ratio of said sprue, runner and inrunner is A _straight : A _horizontal : A _is 1.1-1.3: 1.5- 1.7: 1.8-1.9.

The casting mold of above-mentioned electroslag remelting mold steel is characterized in that: the cross-sectional area ratio of said sprue, runner, and ingate is A _straight : A _horizontal : A _is 1.3: 1.7: 1.9 .

The above-mentioned electroslag remelting die steel casting mold is characterized in that: the length of the lower metal template is equal to that of the upper metal template, and the refractory cavity is aligned with one end of the lower metal template.

The electroslag remelting mold steel casting mold uses metal molds combined with refractory brick tubes to form sprues, runners, and inner runners instead of sand molds. The process flow and production cycle; and the product quality is good, the surface is smooth, free of sand holes, slag inclusions, and sand collapse casting defects; multiple castings in one mold improve product quality, increase the yield by 15%, reduce production costs, and reduce blanking The cost of the two processes of rolling and rounding is 1200 yuan/ton, saving three tons of molding sand per ton of steel ingot, which improves production efficiency and reduces labor intensity of workers, and is suitable for the production of long and thin ingots.

Description of drawings

Fig. 1 is a front view of Embodiment 1 of the electroslag remelting mold steel casting mold.

Fig. 2 is a sectional view along line B-B in Fig. 1 .

Fig. 3 is a sectional view along line A-A in Fig. 1 .

FIG. 4 is a plan view corresponding to FIG. 1 .

Figure 5 is the top view of the lower template.

Fig. 6 is a sectional view along line C-C in Fig. 5 .

Bottom view of the template on Figure 7.

Fig. 8 is a cutaway front view of the sprue cup.

Fig. 9 is a front view of Embodiment 2 of the electroslag remelting mold steel casting mold.

In the above figure:

1. Upper metal formwork 2. Hanging handle 3. Locking flange 4. Locking flange 5. Lower metal formwork 6. Gate cup body 7. Upper mold cavity 8. Electroslag ingot cavity 9. Lower parting surface 10. Upper parting surface 11. Upper mold cavity 12. Electroslag ingot cavity 13. Lower mold cavity 14. Lower mold cavity 15. Riser 16. Riser 17. Riser 18. Riser 19. Runner 20 , Octagonal refractory brick cavity 21, Inner runner cavity 22, Inner runner cavity 23, Refractory material cavity body 24, Sprue cup 25, Sprue

Detailed ways

The specific implementation of the electroslag remelting mold steel casting mold will be described below in conjunction with the examples and accompanying drawings, but the specific implementation of the electroslag remelting mold steel casting mold is not limited to the following examples.

The electroslag remelting mold steel casting mold described in Fig. 1, Fig. 2 and Fig. 3 includes an upper casting mold and a lower casting mold, an upper parting surface is arranged under the upper casting mold, and a lower parting surface is arranged on the lower casting mold, and the upper casting mold The mold cover is on the lower casting mold, and the upper parting surface and the lower parting surface are overlapped together. There is an inner cavity that matches the ingot type of the electroslag remelting mold, that is, the electroslag ingot cavity, between the upper casting mold and the lower casting mold. It is characterized in that: said upper casting mold is an upper metal (cast iron material) formwork 1, and the lower casting mold is a lower metal formwork 5 and a refractory material cavity 23 together, and the refractory material cavity 23 is installed in Fig. 5 In the shell of the lower metal formwork 5, the refractory material cavity 23 is provided with a runner 19, an octagonal refractory brick cavity 20, an inrunner cavity 21 and an inrunner cavity 22, and the runner 19 is set inside The runner cavity 21 and the left end of the runner cavity 22, the two ends of the runner 19 communicate with the runner cavity 21 and the runner cavity 22, and the octagonal refractory brick cavity 20 is set in the runner In the middle part of 19, the refractory material type cavity 23 is made of refractory brick pipe. There is an upper parting surface 10 under the upper metal formwork 1, and there are six hangers 2 on both sides. On the upper parting surface 10 of the upper metal formwork 1, there are two upwardly concave longitudinal upper mold cavities 7 and upper mold cavities 11, There are four risers communicating with the upper mold cavity, the riser 15 and the riser 17 communicate with the upper mold cavity 7, and the pouring riser 16 and the riser 18 communicate with the upper mold cavity 11, see Figure 4 and Figure 7, on the upper There are locking flanges 3 on the lower edges of both sides of the metal template 1, and the upper parting surface 10 is 25 mm lower than the locking flanges 3. There is a lower parting surface 9 on the lower metal mold 5, and there are six hanging handles on both sides of the lower metal formwork 5. On the lower parting surface 9 of the lower metal formwork 5, there are two downward concave longitudinal lower mold cavities 13 and the lower mold cavity. Cavity 14, referring to Fig. 5 and Fig. 6, the left end of lower mold cavity 13 communicates with ingate cavity 22 of refractory material cavity body 23, and the left end of lower mold cavity 14 communicates with ingate cavity 21. The upper metal template 1 is covered on the lower metal template 5, the upper parting surface 10 and the lower parting surface 9 are overlapped together, and the upper mold cavity 7 of the upper metal template 1 is paired with the lower mold cavity 14 of the lower metal template to form electroslag The ingot cavity 8, the upper mold cavity 11 of the upper metal template 1 and the lower mold cavity 13 of the lower metal template 5 form an electroslag ingot cavity 12 together. The length of the upper metal formwork 1 is shorter than that of the lower metal formwork 5, the runner 19 and the octagonal refractory brick cavity 20, the inner runner cavity 21 and the inner runner cavity 22 are mostly outside the covering surface of the upper metal formwork 1 .

In this embodiment, the diameter of the electroslag ingot cavity 8 and the electroslag ingot cavity 12 is Φ167 mm, and the length is 2100 mm. The width of the two ingate cavity 21 and the ingate cavity 22 is 130 mm, and the depth is 115 mm. , the plane size of the octagonal refractory brick cavity 20 is 290 mm, the upper metal form 1 and the lower metal form 5 are 840 mm wide, the upper metal form 1 is 2960 mm long, and the lower metal form 5 is 3430 mm long. This embodiment is also provided with a sprue cup body 6 made of refractory material, as shown in Figure 8, a sprue cup 24 and a sprue 25 are arranged in the sprue cup body 6, and the sprue cup body 6 is installed in the cavity of the refractory material 23, the lower end of the sprue 25 of the sprue cup body 6 communicates with the octagonal refractory brick cavity 20 of the refractory material cavity body 23.

The cross-sectional area ratio of the sprue, runner and ingate in this embodiment is A _straight : A _horizontal : A _inner is 1.3:1.7:1.9.

Embodiment 2 of the present utility model is shown in Fig. 9, and its difference from Embodiment 1 is that the length of the lower metal formwork 5 is equal to that of the upper metal formwork 1, and the refractory cavity 23 is formed by six shaped refractory brick pipes butted on it. Formed together, the left end of the refractory material type cavity 23 and the lower metal template 5 is aligned together.

Claims (4)

1. A kind of electroslag remelting mold steel casting mold, it comprises upper casting mold and lower casting mold, upper parting surface is arranged under the upper casting mold, lower parting surface is arranged on the lower casting mold, and last casting mold cover is cast under On the mould, the upper parting surface and the lower parting surface overlap together, and there is an electroslag ingot cavity between the upper casting mold and the lower casting mold. The diameter of the electroslag ingot cavity is Φ120mm-Φ300mm, and the length is 1800mm mm-3000 mm, it is characterized in that: said upper casting mold is an upper metal formwork, said lower casting mold is a lower metal formwork and a refractory material cavity body together, and the refractory material cavity body is provided with a horizontal casting Road, octagonal refractory brick cavity and two inner runner cavities. In the middle of the runner, the refractory material cavity is composed of refractory brick tubes; on the upper parting surface of the upper metal formwork, there are two vertical upper mold cavities concave upwards, and several risers connected with the upper mold cavity are also arranged. There are locking flanges on the lower edges of both sides of the upper metal formwork, and the upper parting surface is lower than the locking flanges; there are two downwardly concave longitudinal lower mold cavities on the lower parting surface of the lower metal formwork, two One end of the lower mold cavity communicates with the two inner sprue cavities of the refractory material cavity respectively; the two upper mold cavities of the upper metal formwork are respectively paired with the two lower mold cavities of the lower metal formwork to form two electroslag The ingot cavity; the length of the upper metal formwork is less than or equal to that of the lower metal formwork, and the cavity of the runner, the octagonal refractory brick and the two inner runners are outside the covering surface of the upper metal formwork. 2. The electroslag remelting mold steel casting mold according to claim 1 is characterized in that: a sprue cup body made of refractory material is also arranged, a sprue cup and a sprue are arranged in the sprue cup body, and the sprue The cup body is installed on the refractory material cavity body, and the lower end of the sprue of the sprue cup body communicates with the octagonal refractory brick cavity of the refractory material cavity body. 3. electroslag remelting mold steel casting mold according to claim 2 is characterized in that: the cross-sectional area ratio of said sprue, runner, inrunner is A _straight : A _horizontal : A _inner 1.1-1.3: 1.5-1.7: 1.8-1.9. 4. electroslag remelting mold steel casting mold according to claim 3 is characterized in that: the cross-sectional area ratio of said sprue, runner, inrunner is A _straight : A _horizontal : A _inner It is 1.3:1.7:1.9.

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