CN217192442U

CN217192442U - Process system for casting base of nuclear power gear box made of large ductile iron

Info

Publication number: CN217192442U
Application number: CN202220862158.XU
Authority: CN
Inventors: 莫国先; 柏栋; 罗卫东; 欧夏天; 张词
Original assignee: Chongqing Jiangjin Turbo & Charger Machinery Co ltd
Current assignee: Chongqing Jiangjin Turbo & Charger Machinery Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-08-16
Anticipated expiration: 2032-04-14

Abstract

The utility model relates to the technical field of casting, in particular to a process system for casting a large-scale ductile iron nuclear power gear box base, which comprises a nuclear power base casting body, an upper box, a lower box, filter bricks, an ingate and sand cores, wherein the upper box and the lower box are provided with parting surfaces, the parting surfaces of the upper box and the lower box form an upper horizontal pouring channel and a lower horizontal pouring channel, the equipment only adopts one sand core, the upper box and the lower box adopt high-strength sand, namely, the generation of flash caused by lower core is avoided, when molten metal enters the upper cross runner through the straight runner, the molten metal can flow slowly and stably by the mode that the molten metal is filtered by the filter bricks, then flows into the lower cross gate and flows into the nuclear power base casting body through the ingate, the scouring force to the cavity is small, the inflow of slag is reduced, and the quality of a casting is ensured, so that the problem of low qualification rate of the conventional casting process is solved.

Description

Process system for casting base of nuclear power gear box made of large ductile iron

Technical Field

The utility model relates to a casting technical field especially relates to a process systems of casting large-scale ductile iron nuclear power gear box base.

Background

The nuclear power gear box series base products are widely applied, and have the characteristics that the diameter size of an outer circle is large, the requirements on internal density and mechanical property are high, the whole part needs ultrasonic flaw detection to detect internal defects, the surface needs magnetic flaw detection to detect cracks, impurities, sand holes and the like on the surface, the use environment is severe, and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a process systems of casting large-scale ductile iron nuclear power gear box base aims at solving the lower problem of traditional casting process qualification rate.

In order to achieve the purpose, the utility model provides a process system for casting a large-scale ductile iron nuclear power gear box base, which comprises a nuclear power base casting body, an upper box, a lower box, filter bricks, ingates and sand cores, wherein the upper box is fixedly connected with the nuclear power base casting body and is positioned at the top of the nuclear power base casting body, the lower box is fixedly connected with the upper box and is positioned at the bottom of the upper box, the upper box is provided with a sprue and an upper sprue, the sprue is positioned at one side of the upper box, the upper sprue is communicated with the sprue, the lower box is provided with a lower sprue and an ingate, the lower sprue is positioned at one side of the lower box close to the upper sprue, the ingate is communicated with the lower sprue and is communicated with the nuclear power base casting body, the sand cores are arranged on the lower box, the filter bricks are fixedly connected with the lower box, and is located between the upper cross runner and the lower cross runner.

The process system for casting the base of the large-scale ductile iron nuclear power gear box further comprises an inner side riser, and the inner side pores are located at the top of the upper box.

The process system for casting the base of the large-scale ductile iron nuclear power gear box further comprises an outer riser, and the outer riser is located on the outer side wall of the nuclear power base casting body.

The process system for casting the base of the large ductile iron nuclear power gear box further comprises a first fixed seat, wherein the first fixed seat is fixedly connected with the upper box and is positioned at the top of the upper cross runner.

The process system for casting the base of the large ductile iron nuclear power gear box further comprises a second fixed seat, wherein the second fixed seat is fixedly connected with the lower box and is positioned at the bottom of the lower cross gate.

The utility model discloses a process system for casting large-scale nodular iron nuclear power gear box base, the psammitolite 8 that sets up alone corresponding the position of the hole of nuclear power gear box base foundry goods body 6, the upper box with the nowel has the die joint, the upper box with the die joint of nowel forms the entablature and the nowel, this equipment only adopts a psammitolite, the upper box with the nowel adopts high strength sand, namely avoided because the nowel leads to the production of overlap, made the foundry goods appearance quality very beautiful, and saved the manufacturing cost and the molding man-hour of psammitolite, when the molten metal gets into the entablature through the sprue, filtered through the filter brick, flow into the nowel, through the ingate flow into nuclear power base foundry goods body, can make the molten metal flow rate more slowly fill the type steady using the above-mentioned mode, the scouring force to the cavity is small, the inflow of slag is reduced, and the quality of a casting is ensured, so that the problem of low qualification rate of the conventional casting process is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a nuclear power base casting body.

FIG. 2 is a schematic structural diagram of a process system for casting a large ductile iron nuclear power gear box base.

Fig. 3 is a schematic structural view of an upper cross runner, a lower cross runner, a filter brick, a first fixing seat and a second fixing seat.

1-sprue, 2-upper sprue, 3-filter brick, 4-lower sprue, 5-ingate, 6-nuclear power base casting body, 7-inner dead head, 8-sand core, 9-outer dead head, 10-first fixed seat, 11-second fixed seat, 12-upper box and 13-lower box.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3, the present invention provides a process system for casting a large-scale ductile iron nuclear power gear box base, which comprises a nuclear power base casting body 6, an upper box 12, a lower box 13, filter bricks 3 and sand cores 8, wherein the upper box 12 is fixedly connected with the nuclear power base casting body 6 and is located at the top of the nuclear power base casting body 6, the lower box 13 is fixedly connected with the upper box 12 and is located at the bottom of the upper box 12, the upper box 12 is provided with a sprue 1 and an upper runner 2, the sprue 1 is located at one side of the upper box 12, the upper runner 2 is communicated with the sprue 1, the lower box 13 is provided with a lower runner 4 and an inner runner 5, the lower runner 4 is located at one side of the lower box 13 close to the upper runner 2, the ingate 5 is communicated with the lower cross gate 4 and is communicated with the nuclear power base casting body 6, the sand core 8 is arranged on the lower box 13, and the filter brick 3 is fixedly connected with the lower box 13 and is positioned between the upper cross gate 2 and the lower cross gate 4.

In the embodiment, the sand core 8 is separately arranged corresponding to the position of the inner hole of the nuclear power gear box base casting body 6, the upper box 12 and the lower box 13 have parting surfaces, the upper cross runner 2 and the lower cross runner 4 are formed by the parting surfaces of the upper box 12 and the lower box 13, the equipment only adopts one sand core 8, the upper box 12 and the lower box 13 adopt high-strength sand, namely, the generation of flash caused by lower core is avoided, the manufacturing cost and the molding time of the sand core 8 are saved, when molten metal enters the upper cross runner 2 through the sprue 1, the molten metal is filtered through the filter bricks 3 and then flows into the lower cross runner 4, and flows into the nuclear power base casting body 6 through the ingate 5, the flow rate of the molten metal is stable due to the adoption of the mode, and the scouring force in a cavity is small, the inflow of slag is reduced, the quality of the casting is ensured, and the problem of low qualification rate in the conventional casting process is solved.

Further, the process system for casting the base of the large-scale ductile iron nuclear power gear box further comprises an inner side riser 7, the inner side pores are located at the top of the upper box 12, the process system for casting the base of the large-scale ductile iron nuclear power gear box further comprises an outer side riser 9, and the outer side riser 9 is located on the outer side wall of the nuclear power base casting body 6.

In the embodiment, the inner riser 7 and the outer riser 9 play a feeding role and exhaust further, so that slag and gas in the cavity can be smoothly discharged out of the nuclear power base casting body 6, the defects of slag inclusion, air holes and the like are avoided, the quality of the casting is further ensured, and loose sand or inclusion can be prevented from being brought into the cavity by worker misoperation.

Further, the process system for casting the base of the large-scale ductile iron nuclear power gear box further comprises a first fixed seat 10, the first fixed seat 10 is fixedly connected with an upper box 12 and is positioned at the top of the upper cross runner 2, the process system for casting the base of the large-scale ductile iron nuclear power gear box further comprises a second fixed seat 11, and the second fixed seat 11 is fixedly connected with the lower box 13 and is positioned at the bottom of the lower cross runner 4.

In the present embodiment, the first fixing seat 10 serves to fix the upper runner 2, and the second fixing seat 11 serves to fix the lower runner 4.

The above disclosure is only a preferred embodiment of the present invention, and certainly not intended to limit the scope of the present invention, and persons skilled in the art can understand that all or part of the process flow of the above embodiment is realized, and the equivalent changes made according to the claims of the present invention still belong to the scope covered by the present invention.

Claims

1. A process system for casting a large ductile iron nuclear power gear box base is characterized in that,

the sand core device comprises a nuclear power base casting body, an upper box, a lower box, a filter brick, an ingate and a sand core, wherein the upper box is fixedly connected with the nuclear power base casting body and is positioned at the top of the nuclear power base casting body, the lower box is fixedly connected with the upper box and is positioned at the bottom of the upper box, the upper box is provided with a sprue and an upper sprue, the sprue is positioned on one side of the upper box, the upper sprue is communicated with the sprue, the lower box is provided with a lower sprue and an inner sprue, the lower sprue is positioned on one side of the lower box close to the upper sprue, the inner sprue is communicated with the lower sprue and is communicated with the nuclear power base casting body, the sand core is arranged on the lower box, and the filter brick is fixedly connected with the lower box and is positioned between the upper sprue and the lower sprue.

2. The process system for casting the base of the large-scale ductile iron nuclear power gearbox as claimed in claim 1,

the process system for casting the base of the large-scale ductile iron nuclear power gear box further comprises an inner side riser, and the inner side riser is located at the top of the upper box.

3. The process system for casting the base of the large-scale ductile iron nuclear power gearbox as claimed in claim 1,

4. The process system for casting the base of the large-scale ductile iron nuclear power gearbox as claimed in claim 1,

the process system for casting the base of the large-scale ductile iron nuclear power gear box further comprises a first fixed seat, wherein the first fixed seat is fixedly connected with the upper cross runner and is positioned at the top of the upper box.

5. The process system for casting the base of the large-scale ductile iron nuclear power gearbox as claimed in claim 1,

the process system for casting the base of the large ductile iron nuclear power gear box further comprises a second fixed seat, wherein the second fixed seat is fixedly connected with the lower cross gate and is positioned at the bottom of the lower box.