Specializing in the production of mechanical parts and precision castings
What are the defects of the group tree of investment casting?
Release time:
2023-11-29
The investment casting group tree process is actually composed of two processes. These two processes are assembly and welding, because sometimes the wax piece is not a gate, need to be homemade or pressed, and then bonded with the wax piece, and finally connected with the gating system. In these two processes, defects in the tree formation process may occur. Today, Yufeng Metal, a precision casting manufacturer, will talk about the defects in the tree formation. Assembly needs size to ensure, then, the size is inconsistent or the size does not conform to the process documents is its defect; welding must also have welding quality, then, poor welding is the welding defect.
investment castingThe group tree process is actually composed of two processes. These two processes are assembly and welding, because sometimes the wax piece is not a gate, need to be homemade or pressed, and then bonded with the wax piece, and finally connected with the gating system. In these two processes may produce defects in the group tree process, todayprecision casting plantJia Yufeng Metal will talk about the defects of the group tree.
Assembly needs size to ensure, then, the size is inconsistent or the size does not conform to the process documents is its defect; welding must also have welding quality, then, poor welding is the welding defect.
1. size issues. This size includes the gate size and position size of the wax piece. Generally speaking, when assembling trees, the positions of sprue and inner gate should be accurately drawn with a ruler, and then assembled according to the process drawings, and must be horizontal, flat and vertical. In addition, the gate, runner should be accurate in size. Therefore, it is generally not recommended to make the gate runner by hand, the size is difficult to guarantee, and the combination comes out in various forms and shapes.
2. welding problems. Welding problems involve two aspects, one is the weld, one is the welding strength. The welding seam mainly prevents the surface slurry from penetrating into the casting resulting in sand inclusion, and the welding strength mainly ensures the shell-making operation. Both of these are possible defects of the group tree. Weld defect is generally said that the virtual welding. These two are also common group tree defects.
There are many investment casting processes and many influencing factors. Any small link may have the greatest impact on the quality of castings. Therefore, every detail should be kept improving as far as possible, and the quality of castings can be finally implemented.
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