The uneven distribution of molten iron leads to a faster flow of molten iron into each casting
2020年7月11日The design of the variable cross-section runner is shown below. The series pouring system is to place the castings along the runner in turn, and each casting has an independent inner runner connected with the runner. Distributing the molten iron evenly into each cavity, thereby reducing the flow rate of molten iron into the human cavity, is very necessary to improve the quality of castings. This article mainly takes the main bearing cap as an example to design its casting process, and uses numerical simulation software to optimize and verify its process.
The result of the gas entrainment during the filling process (Scheme 1) 1.2 In the initial scheme shown in the process optimization to improve the uniform distribution of the molten iron, the cross-sectional area of the cross-runner from the filter to the slag collecting pit of the cross-runner is the same . The cross-runner between the filter and the slag collecting pit of the cross-runner is divided into four sections, and the cross-sectional area of the cross-runner of each section is different. The main wheel cover has a maximum rim size of 440mmX92mm, and the three-dimensional model is shown. Therefore, the process is optimized and improved so that the molten iron can be evenly distributed to each casting. The uneven distribution of molten iron results in a faster flow of molten iron into each cavity of the person. And at the same time full.For small castings, the three-dimensional model of the main bearing cap has a low production efficiency for casting one piece in one box. The runner is divided brass gear Suppliers into 4 sections, numbered for simulation evaluation. When the casting farthest from the runner is filled to half, the casting closest to the runner starts to flow in.. For small castings with thinner and taller molds, if vertical casting is used, serial casting can be used. Therefore, multiple castings in one box can be used to improve the production efficiency of castings. The speed at which hot metal enters the human cavity will cause sand flushing, slag inclusions, gas entrapment, etc. The closer the casting to the sprue, the later the inflow and the later it will be filled. In the series pouring system, each main bearing cap can evenly distribute the molten iron and enter the flow at the same time. It can be seen that when the casting is farthest from the runner When the casting is full, the casting closest to the runner is only half filled., which causes great problems for the quality of castings. Filling flow rate when molten iron is just filled into the sprue (Scheme 1) Filling flow rate when molten iron is about to fill the entire cavity (Scheme 1) Cross-sectional view of a cross-section runner with variable cross-section 2) The casting equipment and process can be seen from it.
The uneven distribution of molten iron leads to a faster flow of molten iron into each casting, so serious gas entrapment occurs in the casting (as shown), which seriously affects the quality of the casting. The molten iron will follow the cross-runner https://www.bronzecast.net/ , enter the inner runner and eventually fill the cavity. With the help of numerical simulation software, it can be seen that the castings farthest from the sprue are always the most advanced flow and filled first. In order to prevent the molten iron from filling the casting cavity away from the sprue in the initial stage of filling, it is considered that the cross-sectional area of the cross-runner between different castings can be changed, and the molten iron can be evenly distributed by controlling the molten iron flow
The result of the gas entrainment during the filling process (Scheme 1) 1.2 In the initial scheme shown in the process optimization to improve the uniform distribution of the molten iron, the cross-sectional area of the cross-runner from the filter to the slag collecting pit of the cross-runner is the same . The cross-runner between the filter and the slag collecting pit of the cross-runner is divided into four sections, and the cross-sectional area of the cross-runner of each section is different. The main wheel cover has a maximum rim size of 440mmX92mm, and the three-dimensional model is shown. Therefore, the process is optimized and improved so that the molten iron can be evenly distributed to each casting. The uneven distribution of molten iron results in a faster flow of molten iron into each cavity of the person. And at the same time full.For small castings, the three-dimensional model of the main bearing cap has a low production efficiency for casting one piece in one box. The runner is divided brass gear Suppliers into 4 sections, numbered for simulation evaluation. When the casting farthest from the runner is filled to half, the casting closest to the runner starts to flow in.. For small castings with thinner and taller molds, if vertical casting is used, serial casting can be used. Therefore, multiple castings in one box can be used to improve the production efficiency of castings. The speed at which hot metal enters the human cavity will cause sand flushing, slag inclusions, gas entrapment, etc. The closer the casting to the sprue, the later the inflow and the later it will be filled. In the series pouring system, each main bearing cap can evenly distribute the molten iron and enter the flow at the same time. It can be seen that when the casting is farthest from the runner When the casting is full, the casting closest to the runner is only half filled., which causes great problems for the quality of castings. Filling flow rate when molten iron is just filled into the sprue (Scheme 1) Filling flow rate when molten iron is about to fill the entire cavity (Scheme 1) Cross-sectional view of a cross-section runner with variable cross-section 2) The casting equipment and process can be seen from it.
The uneven distribution of molten iron leads to a faster flow of molten iron into each casting, so serious gas entrapment occurs in the casting (as shown), which seriously affects the quality of the casting. The molten iron will follow the cross-runner https://www.bronzecast.net/ , enter the inner runner and eventually fill the cavity. With the help of numerical simulation software, it can be seen that the castings farthest from the sprue are always the most advanced flow and filled first. In order to prevent the molten iron from filling the casting cavity away from the sprue in the initial stage of filling, it is considered that the cross-sectional area of the cross-runner between different castings can be changed, and the molten iron can be evenly distributed by controlling the molten iron flow
