4weh16 low-intensity heating riser for valve body molding line
A heating riser and low-strength technology, applied to casting molding equipment, casting molds, cores, etc., can solve the problems of unqualified products, low compressive strength, etc., and achieve simple and ingenious design, low cost, and convenient use Effect
Active Publication Date: 2017-10-10
南通华东油压科技有限公司
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Problems solved by technology
[0003] In order to solve the above-mentioned problems of the invention, the present invention proposes a low-strength heating riser for the molding line of the 4WEH16 valve body. Loose, the product does not meet the requirements
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[0012] In order to further illustrate the present invention, introduce below in conjunction with accompanying drawing of description:
[0013] Referring to the accompanying drawings, the 4WEH16 valve body molding line uses a low-strength heating riser, which includes a main body 1, a positioning reference 1, a positioning reference 2 3, a positioning reference 3 4 and a cross gate 5. The main body 1 is a cylindrical body, and the middle is Circular through hole, one side of the upper end of the main body 1 is provided with a cross gate 5, and the upper ends of the two sides of the cross gate 5 are designed with positioning datum 1 and positioning datum 2 3, and the upper end of the main body 1 is designed corresponding to the position on the other side of the cross gate 5 There are three 4 positioning benchmarks.
[0014] The runner gate 5 is a U-shaped opening.
[0015] A U-shaped groove is formed between the first positioning reference 2 and the third positioning reference ...
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The invention relates to a low-strength heating riser for a 4WEH16 valve body molding line. It includes the main body, positioning reference 1, positioning reference 2, positioning reference 3 and horizontal gate. The main body is a cylindrical body with a circular through hole in the middle. There are positioning datum 1 and positioning datum 2, and the position on the other side of the upper end of the main body corresponding to the horizontal gate is designed with positioning datum 3. The advantage is that the design is simple and ingenious, easy to use, low cost, and solves the problem that the heating riser cannot be positioned, thus solving the problem of the application of the low-strength heating riser on the high-pressure molding line; at the same time, it is determined to use the Φ80 heating riser after testing , no defects such as shrinkage and porosity, meeting customer requirements; the price of low-strength heating risers is about 7.2 yuan per piece, and the cost of castings increases by 550 yuan per ton, but the process yield of castings reaches 76.5%, which improves the utilization rate of molten iron. On the contrary, the cost is reduced and the efficiency is improved.
Description
technical field [0001] The invention relates to the field of valve body molding, in particular to a low-strength heating riser for a 4WEH16 valve body molding line. Background technique [0002] The 4WEH16 valve body is a product of Rexroth in Germany, and the domestic demand is large. Currently, the coated sand shell process is used. This production process has low production efficiency, high labor intensity, and high production cost, which cannot meet the needs of customers. In order to reduce costs and improve efficiency, the company decided to produce this product on an automated molding line. Due to the complex internal structure of the product and the thick casting wall, we have developed the application of low-strength heating risers on high-pressure automatic molding lines. In order to produce the 4WEH16 valve body on a high-pressure automatic line, we have tested various processes. Firstly, the riser of the modified valve body was designed to be Φ120*140, and each...
Claims
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IPC IPC(8): B22C9/08B22D27/04
Inventor 丁洋曹建军
Owner 南通华东油压科技有限公司