Integral forming process of DZ1 type side frame guide frame of wagon

Abstract

The invention discloses an integral forming process of a DZ1 type side frame guide frame of a wagon, namely a method for forming the curved surface shape of the DZ1 type side frame guide frame by using an integral sand core, and therefore, the pattern draft, the trimming or the fash due to the fact that the curved surface of the DZ1 type side frame guide frame is formed step by step by adopting the sand core and the shape currently can be avoided. According to the invention, in the event of designing the structure of a core box, a curved surface movable block is adopted at the premise of ensuring the quality of the sand core and not increasing the operation difficulty; therefore, when the sand core is put on the top surface correspondingly close to a guide frame, the sand filling area is gradually enlarged till the curved surface of the guide frame is completely covered by the corresponding sand core forming part, so that the purpose of integrally forming the curved surface of the guide frame is realized; the DZ1 type side frame guide frame is integrally formed by adopting the integral sand core; the appearance quality and the internal quality of casts are increased; and the cleaning working strength of welding, repairing, polishing and the like caused by forming step by step is lightened.

Description

technical field [0001] The invention belongs to the technical field of casting production of DZ1 side frames of railway freight cars, and in particular relates to an integral molding process of a guide frame used in the casting process of DZ1 side frames of railway freight cars. Background technique [0002] DZ1 side frame of railway freight car is a key part of the running part of railway freight car, such as figure 1 and 2 As shown, in the production of DZ1-type side frame casting 1 in China, the molding method of the casting pedestal is to use the sand core 7 of equal thickness and the outer shape 8 to be formed in two parts, as shown in Figure 3-6 shown. [0003] Such as Figure 7 As shown, using such an equal-thickness sand core and the shape to form the pedestal frame in two parts, the DZ1 side frame produced mainly has the following hazards: [0004] First, if the thickness of the sand core is smaller than the corresponding width of the pedestal, the damage to th...

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Problems solved by technology

[0006] The above hazards are reflected in the operation of the railway, which will bring certain economic losses to the railway transportation industry.

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