Process system for casting TRT part large shaft seal ductile iron casting
By using high-strength sand and sand core in the process system for casting TRT components, the flow rate and filling of the metal liquid are controlled smoothly, and the problems of low pass rate and many defects in the existing process are solved, and higher casting quality and pass rate are achieved.
Patent Information
- Application Number
- CN202420512422.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-03-18
AI Technical Summary
The existing large-axle sealing ductile iron parts process for cast TRT components has defects such as low pass rate, easy to shrink inside, poor appearance quality, easy to appear sand holes, cracks, and inclusions, which affect the airtightness.
A casting process system is adopted, including upper sand box, upper box, lower box, lower sand box, large shaft seal casting body, filter brick and sand core. Through the coordination of high-strength sand and sand core, the metal liquid flow rate and smooth filling are controlled, the inflow of slag is reduced, and the casting quality is ensured.
The casting pass rate is improved, the appearance quality and airtightness of the castings are improved, and the occurrence of defects such as shrinkage, sand holes, cracks, and inclusions are avoided.
Smart Images
Figure CN222902562U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting, in particular to a process system for casting a large shaft seal ductile iron piece of a TRT component. Background Art
[0002] The outer diameter of the large shaft seal of the TRT component is large, and the internal density and mechanical properties are required to be high. The entire part needs to be inspected for internal defects by ultrasonic testing, and the surface needs to be inspected for cracks, inclusions, sand holes, etc. by magnetic particle testing. The use environment is harsh, and the air tightness of the casting is very high. If the blast furnace gas leaks to the outside through the defective parts of the casting, there is a risk of polluting the atmospheric environment and causing an explosion. In addition, the casting process is prone to shrinkage, sand holes, cracks, inclusions and other defects, which makes manufacturing very difficult. In the existing casting process, the qualified rate of the traditional casting process is low, shrinkage is prone to occur inside, and the ultrasonic flaw detection fails. The appearance quality is also particularly poor, and defects such as sand holes, cracks, inclusions, etc. are prone to occur, and the magnetic particle flaw detection fails. It also has a great impact on the air tightness of the casting, and the casting qualified rate is low. Utility Model Content
[0003] The utility model aims to provide a process system for casting large shaft seal ductile iron parts of TRT components, so as to achieve the effect of improving the casting qualification rate.
[0004] To achieve the above-mentioned purpose, the utility model adopts a process system for casting a large shaft seal ductile iron part of a TRT component, comprising an upper sand box, an upper box, a lower box, a lower sand box, a large shaft seal casting body, a filter brick and a sand core, the lower sand box is fixedly connected to the upper sand box, the upper box is arranged inside the upper sand box, the lower box is arranged inside the lower sand box, the lower box is fixedly connected to the large shaft seal casting body and is located at the bottom of the large shaft seal casting body, the upper box is fixedly connected to the lower box, and Located at the top of the lower box, the upper box has a straight runner and an upper cross runner, the straight runner is arranged on one side of the upper box, and the upper cross runner is connected to the straight runner, the lower box has a lower cross runner and an endocastor, the lower cross runner is arranged on one side of the lower box, and the endocastor is respectively connected to the lower cross runner and the large shaft seal casting body, the sand core is arranged on the lower box, the filter brick is fixedly connected to the lower box, and is located between the upper cross runner and the lower cross runner.
[0005] Wherein, the top of the upper box is provided with an inner riser.
[0006] The process system for casting the large shaft seal ductile iron of the TRT component further comprises a first chill and a second chill, and the first chill and the second chill are respectively arranged on the inner side wall of the large shaft seal casting body.
[0007] The process system for casting a large shaft seal ductile iron part of a TRT component further includes a first fixing seat, which is fixedly connected to the upper box and is located at the top of the upper runner.
[0008] Wherein, the process system for casting the large shaft seal ductile iron part of the TRT component also includes a second fixing seat, which is fixedly connected to the lower box and is located at the bottom of the lower runner.
[0009] The utility model discloses a process system for casting a large shaft seal ductile iron part of a TRT component, wherein the sand core is separately arranged in the body of the large shaft seal casting, the upper box and the lower box have a parting surface, the parting surfaces of the upper box and the lower box form the upper runner and the lower runner, and one sand core is adopted, and the upper box and the lower box adopt high-strength sand, which not only avoids the generation of flash due to the lower core, makes the appearance quality of the casting better, but also saves the manufacturing cost and molding time of the sand core, when the molten metal enters the upper runner through the straight runner, and then is filtered by the filter brick, flows into the lower runner, and flows into the large shaft seal casting body through the inner runner, the above method can make the molten metal flow rate slower and the filling smoother, the flushing force on the cavity is smaller, the inflow of slag is reduced, the quality of the casting is guaranteed, and the effect of improving the casting qualification rate is obtained. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0011] Figure 1 The utility model is a structural schematic diagram of a process system for casting a large shaft seal ductile iron piece of a TRT component.
[0012] Figure 2 It is a partial structural schematic diagram of a process system for casting a large shaft seal ductile iron piece of a TRT component of the utility model.
[0013] Figure 3 It is a structural sectional view of a process system for casting a large shaft seal ductile iron piece of a TRT component according to the utility model.
[0014] Figure 4 The utility model Figure 2 P-direction structural cross-sectional view.
[0015] Figure 5 It is a structural schematic diagram of an upper horizontal runner, a lower horizontal runner, a filter brick, a first fixing seat and a second fixing seat of the utility model.
[0016] Figure 6 The utility model Figure 5 AA line structural section view.
[0017] 1-upper sand box, 2-upper box, 3-lower box, 4-lower sand box, 5-large shaft seal casting body, 6-sprue, 7-upper horizontal runner, 8-filter brick, 9-lower horizontal runner, 10-second fixed seat, 11-introducing channel, 12-first chill, 13-second chill, 14-inner riser, 15-sand core, 16-first fixed seat. DETAILED DESCRIPTION
[0018] See also Figure 1 to Figure 6 ,in Figure 1 This is a schematic diagram of the process system for casting large shaft seal ductile iron parts of TRT components. Figure 2 This is a partial structural diagram of the process system for casting large shaft seal ductile iron parts of TRT components. Figure 3 This is a structural cross-sectional view of the process system for casting large shaft seal ductile iron parts of TRT components. Figure 4 yes Figure 2 P-direction structural cross-sectional view, Figure 5 It is a structural diagram of the upper horizontal runner, the lower horizontal runner, the filter brick, the first fixing seat and the second fixing seat. Figure 6 yes Figure 5 AA line structural section view.
[0019] The utility model provides a process system for casting a large shaft seal ductile iron part of a TRT component, comprising an upper sand box 1, an upper box 2, a lower box 3, a lower sand box 4, a large shaft seal casting body 5, a filter brick 8 and a sand core 15, wherein the lower sand box 4 is fixedly connected to the upper sand box 1, the upper box 2 is arranged inside the upper sand box 1, the lower box 3 is arranged inside the lower sand box 4, the lower box 3 is fixedly connected to the large shaft seal casting body 5 and is located at the bottom of the large shaft seal casting body 5, the upper box 2 is fixedly connected to the lower box 3 and is located at the bottom of the lower box 3 The top of the upper box 2 has a straight runner 6 and an upper cross runner 7, the straight runner 6 is arranged on one side of the upper box 2, and the upper cross runner 7 is connected to the straight runner 6, the lower box 3 has a lower cross runner 9 and an inner runner 11, the lower cross runner 9 is arranged on one side of the lower box 3, and the inner runner 11 is respectively connected to the lower cross runner 9 and the large shaft seal casting body 5, the sand core 15 is arranged on the lower box 3, the filter brick 8 is fixedly connected to the lower box 3, and is located between the upper cross runner 7 and the lower cross runner 9.
[0020] In this embodiment, the sand core 15 is separately arranged in the large shaft seal casting body 5, and the upper box 2 and the lower box 3 have a parting surface, and the parting surfaces of the upper box 2 and the lower box 3 form the upper cross runner 7 and the lower cross pouring. Using one sand core 15, the upper box 2 and the lower box 3 use high-strength sand, which not only avoids the generation of flash due to the lower core, so that the appearance quality of the casting is better, but also saves the manufacturing cost and molding time of the sand core 15. When the molten metal enters the upper cross runner 7 through the straight runner 6, and then is filtered through the filter brick 8, flows into the lower cross runner 9, and flows into the large shaft seal casting body 5 through the inner runner 11, the use of the above method can make the molten metal flow rate slower and the filling smoother, the scouring force on the cavity is smaller, the inflow of slag is reduced, the quality of the casting is guaranteed, and the effect of improving the casting qualification rate is obtained.
[0021] Furthermore, the top of the upper box 2 has an inner riser 14 .
[0022] Furthermore, the process system for casting the large shaft seal ductile iron casting of the TRT component further includes a first chill 12 and a second chill 13 , and the first chill 12 and the second chill 13 are respectively arranged on the inner side wall of the large shaft seal casting body 5 .
[0023] In this embodiment, the inner riser 14, the first chill 12 and the second chill 13 play a shrinkage compensation role and further exhaust the gas, so that the slag and gas in the cavity can be smoothly discharged from the large shaft seal casting body 5, avoiding the occurrence of defects such as slag inclusions and pores, further ensuring the quality of the casting, and also preventing workers from bringing loose sand or inclusions into the cavity due to operating errors.
[0024] Furthermore, the process system for casting a large shaft seal ductile iron piece of a TRT component also includes a first fixing seat 16 , which is fixedly connected to the upper box 2 and is located at the top of the upper runner 7 .
[0025] Furthermore, the process system for casting a large shaft seal ductile iron piece of a TRT component further includes a second fixing seat 10 , which is fixedly connected to the lower box 3 and is located at the bottom of the lower runner 9 .
[0026] In this embodiment, the sprue 6 is fixed by the first fixing seat 16 , and the ingrate 11 is fixed by the second fixing seat 10 .
[0027] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.
Claims
1. A process system for casting large shaft seal ductile iron parts of TRT components, characterized in that: It includes an upper sand box, an upper box, a lower box, a large shaft seal casting body, a filter brick and a sand core, the lower sand box is fixedly connected to the upper sand box, the upper box is arranged inside the upper sand box, the lower box is arranged inside the lower sand box, the lower box is fixedly connected to the large shaft seal casting body and is located at the bottom of the large shaft seal casting body, the upper box is fixedly connected to the lower box and is located at the top of the lower box, the upper box has a straight runner and an upper cross runner, the straight runner is arranged on one side of the upper box, and the upper cross runner is connected to the straight runner, the lower box has a lower cross runner and an inner runner, the lower cross runner is arranged on one side of the lower box, and the inner runner is respectively connected to the lower cross runner and the large shaft seal casting body, the sand core is arranged on the lower box, the filter brick is fixedly connected to the lower box, and is located between the upper cross runner and the lower cross runner; The top of the upper box is provided with an inner riser; The process system for casting a large shaft seal ductile iron piece of a TRT component further includes a first chill and a second chill, wherein the first chill and the second chill are respectively arranged on the inner side wall of the large shaft seal casting body.
2. The process system for casting large shaft seal ductile iron parts of TRT components as claimed in claim 1, characterized in that: The process system for casting a large shaft seal ductile iron piece of a TRT component also includes a first fixing seat, which is fixedly connected to the upper box and is located at the top of the upper runner.
3. The process system for casting large shaft seal ductile iron parts of TRT components as claimed in claim 1, characterized in that: The process system for casting a large shaft seal ductile iron piece of a TRT component also includes a second fixing seat, which is fixedly connected to the lower box and is located at the bottom of the lower runner.