Pouring system for pouring cylinder block
By combining H-type and U-type runners, the problems of oxide slag removal and flow rate control in the cylinder block casting system were solved, thus achieving high-quality casting production of cylinder blocks.
Patent Information
- Application Number
- CN202511196231.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2025-11-21
AI Technical Summary
The existing cylinder block casting system has poor slag-blocking ability and fast filling flow rate, which leads to defects such as porosity and sand inclusion, affecting production quality.
The system employs a combination of H-shaped casting channels and U-shaped inlet channels. The H-shaped channel is used for initial slag filtration, while the U-shaped channel is used to stabilize the flow rate. The slag collection trough provides preliminary filtration of oxidized slag, and refractory bricks enhance the refractory performance at the joints.
It effectively filters oxide residue, controls the filling flow rate, reduces slag inclusions and porosity defects in the cylinder block, and improves production quality.
Smart Images
Figure CN120984818A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of cylinder block casting, in particular to a casting system for casting a cylinder block. BACKGROUND
[0002] The cylinder block is the main body of the engine, which connects each cylinder and the crankcase into a whole, and is the supporting framework for installing the piston, crankshaft and other parts and accessories. Since the internal structure of the cylinder block is relatively complex, it needs to be cast through a casting system.
[0003] At present, most of the cylinder blocks are made by binding ceramic pipes to form the casting system. Although this casting system has the advantages of simple structure and convenient operation compared with the traditional runway type casting system, it still has the following shortcomings. First, the slag blocking of the prior art casting system is poor, which causes the molded cylinder block to have the defect of slag inclusion. Second, the filling flow rate of the prior art casting system is fast during the casting of the cylinder block, and the iron liquid filling presents a jet shape, which causes a large impact on the mold cavity, so that the cast cylinder block is prone to have the defects of air holes and sand inclusion, which brings great inconvenience to the casting production of the cylinder block. SUMMARY
[0004] To solve the problems in the prior art, the present application provides a casting system for casting a cylinder block, which has a reasonable overall design, a simple structure and convenient operation. The H-shaped casting runner and the U-shaped pipe inner runner are effectively combined. The H-shaped casting runner can effectively filter the oxidized slag of the molten iron, avoid the defect of slag inclusion in the molded cylinder block, and effectively control the flow rate of the molten iron during filling through the U-shaped pipe inner runner, effectively reduce the impact force of the molten iron on the mold cavity, and avoid the defects of air holes and sand inclusion in the cast cylinder block, which brings great convenience to the casting production of the cylinder block.
[0005] To solve the above technical problems, the present application adopts the following technical solutions:
[0006] A casting system for casting a cylinder block, characterized in that it comprises
[0007] a straight runner for casting a cylinder block, wherein the liquid inlet of the straight runner is in communication with the runner opening;
[0008] an H-shaped casting runner for filtering slag and slowing down the flow rate of the casting molten iron during the casting of the cylinder block, wherein the liquid inlet of the H-shaped casting runner is in communication with the liquid outlet of the straight runner;
[0009] a U-shaped pipe inner runner for further filtering slag and stabilizing the flow rate of the casting molten iron during the casting of the cylinder block, wherein the liquid inlet of the U-shaped pipe inner runner is in communication with the liquid outlet of the H-shaped casting runner.
[0010] A cavity for casting a cylinder body, the liquid inlet of the cavity is communicated with the liquid outlet of the U-shaped pipe gate.
[0011] In a preferred embodiment of the present application, the H-shaped pouring gate comprises a T-shaped gate which is a T-shaped structure horizontally placed as a whole and a tee, the lower end of the T-shaped gate is communicated with the straight gate, and the middle part of the T-shaped gate is communicated with the tee.
[0012] In a preferred embodiment of the present application, a slag collecting groove capable of preliminarily filtering oxidized slag of molten iron is arranged at the upper end of the T-shaped gate.
[0013] In a preferred embodiment of the present application, refractory bricks are arranged at the lower end of the joint between the straight gate and the T-shaped gate.
[0014] In a preferred embodiment of the present application, the inner diameter size of the straight gate is 100 mm.
[0015] In a preferred embodiment of the present application, the inner diameter size of the U-shaped pipe gate is 50 mm, and the filling speed can be controlled below 2 m / s.
[0016] In a preferred embodiment of the present application, the temperature of the molten iron for casting the cylinder body is controlled at 1330℃.
[0017] Compared with the prior art, the present application has the advantages of reasonable overall design, simple structure, convenient operation, effective combination of the H-shaped pouring gate and the U-shaped pipe gate, effective filtering of oxidized slag of molten iron by the H-shaped pouring gate, avoidance of the defects of the formed cylinder body, such as slag inclusion, effective control of the filling speed of the molten iron by the U-shaped pipe gate, effective reduction of the impact force of the molten iron on the cavity, avoidance of the defects of the cast cylinder body, such as air holes and sand inclusion, and great convenience for the casting production of the cylinder body. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description only represent some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0019] Figure 1 The structure of the present application is shown in the figure. DETAILED DESCRIPTION
[0020] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.
[0021] Referring to Figure 1 As shown in the figure, a pouring system for pouring a cylinder block is given, which comprises a straight sprue 100, an H-shaped pouring sprue 200, a U-shaped pipe inner sprue 300 and a cavity 400.
[0022] The straight sprue 100 is used for pouring the cylinder block, and the liquid inlet of the straight sprue 100 is connected with the pouring port. The H-shaped pouring sprue 200 is used for filtering slag and slowing down the pouring speed of molten iron during the pouring process of the cylinder block, and the liquid inlet of the H-shaped pouring sprue 200 is connected with the liquid outlet of the straight sprue.
[0023] The U-shaped pipe inner sprue 300 is used for further filtering slag and stabilizing the pouring speed of molten iron during the pouring process of the cylinder block, and the liquid inlet of the U-shaped pipe inner sprue 300 is connected with the liquid outlet of the H-shaped pouring sprue 200 through a transition sprue 500. The cavity 400 is used for pouring the cylinder block, and the liquid inlet of the cavity 400 is connected with the liquid outlet of the U-shaped pipe inner sprue 300.
[0024] The H-shaped pouring sprue 200 comprises a T-shaped sprue 210 which is horizontally placed as a whole and a tee joint 220. The lower end of the T-shaped sprue 210 is connected with the straight sprue 100, and the middle part of the T-shaped sprue 210 is connected with the tee joint 220.
[0025] A slag collecting groove 211 capable of preliminarily filtering molten iron oxidation slag is arranged at the upper end of the T-shaped sprue 210. The molten iron oxidation slag has a smaller density and floats on the molten iron. The slag collecting groove 211 can effectively filter the molten iron oxidation slag floating on the molten iron, so as to avoid the defect of slag inclusion in the formed cylinder block.
[0026] A refractory brick 600 is arranged at the lower end of the connection between the straight sprue 100 and the T-shaped sprue 210. The refractory brick 600 can effectively improve the refractory performance of the connection between the straight sprue and the T-shaped sprue, and further improve the safety and practical performance of the pouring system.
[0027] The inner diameter size of the straight sprue 100 is 100 mm, the inner diameter size of the U-shaped pipe inner sprue 200 is 50 mm, and the filling speed can be controlled below 2 m / s. The slag is further filtered, the molten iron is more stable, and the impact force of the molten iron on the cavity is greatly reduced.
[0028] The opening ratio of the whole pouring system is 1:1.23:1.85. Considering the shrinkage and fluidity of the molten iron, the pouring temperature of the molten iron is set to 1330℃, and the practical performance of the pouring system is further improved.
[0029] In summary, the application has the advantages of reasonable overall design, simple structure, convenient operation, effective combination of H-type pouring runner and U-shaped pipe inner runner, effective filtration of molten iron oxidation slag by the H-type pouring runner, avoidance of the defect of slag inclusion in the formed cylinder body, effective control of the flow rate of the molten iron by the U-shaped pipe inner runner, effective reduction of the impact force of the molten iron on the mold cavity, avoidance of the defects of pores and sand inclusion in the cast cylinder body, and great convenience for the casting production of the cylinder body.
[0030] The basic principles, main features and advantages of the application are shown and described above. Those skilled in the art should understand that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application. Various changes and improvements can be made to the application without departing from the spirit and scope of the application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection of the application is defined by the appended claims and their equivalents.
Claims
1. A gating system for casting an engine block, characterized by, Comprising A sprue for casting the cylinder block, the inlet of the sprue being connected with the pouring gate; An H-shaped pouring channel for filtering the slag and slowing down the flow rate of the molten iron during the casting of the cylinder block, the inlet of the H-shaped pouring channel being connected with the outlet of the sprue; A U-shaped pipe inner runner for further filtering the slag and stabilizing the flow rate of the molten iron during the casting of the cylinder block, the inlet of the U-shaped pipe inner runner being connected with the outlet of the H-shaped pouring channel; A cavity for casting the cylinder block, the inlet of the cavity being connected with the outlet of the U-shaped pipe inner runner.
2. A gating system for casting an engine block as defined in claim 1, characterized in that: When the H-shaped pouring channel comprises a T-shaped channel in a transversely placed T-shaped structure and a tee, the lower end of the T-shaped channel is connected with the sprue, and the middle part of the T-shaped channel is connected with the tee.
3. A gating system for casting an engine block as defined in claim 2, characterized in that: A slag collecting groove is arranged at the upper end of the T-shaped channel to preliminarily filter the oxidized slag.
4. A casting system for casting an engine block as defined in claim 2, characterized in that: Refractory bricks are arranged at the lower end of the connection between the sprue and the T-shaped channel.
5. A casting system for casting an engine block as defined in claim 1, characterized in that: The inner diameter of the sprue is 100 mm.
6. A casting system for casting an engine block as defined in claim 1, characterized in that: The inner diameter of the U-shaped pipe inner runner is 50 mm, and the filling speed is controlled below 2 m / s.
7. A casting system for casting an engine block as defined in claim 1, characterized in that: The temperature of the molten iron for casting the cylinder block is controlled at 1330℃.