CN-119910129-B - Integral casting method of multilayer casting

CN119910129BCN 119910129 BCN119910129 BCN 119910129BCN-119910129-B

Abstract

The invention relates to the technical field of casting, in particular to a method for integrally casting a multilayer casting. The invention provides a method for casting a multi-layer casting, which solves the problems of large overall casting difficulty, long welding period, low economic benefit and difficult mass production of the multi-layer casting in the assembly welding forming process in the prior art. The multilayer casting integral casting technology comprises a casting process and a design of a modeling scheme, realizes integral forming of the multilayer casting in a casting mode, enables a whole machine manufacturer to directly obtain a finished product by purchasing the casting, avoids the manufacturing process of purchasing raw materials for multiple times and then performing assembly welding, effectively improves economic benefit and production period, greatly shortens the production period, saves labor and material consumption, and reduces manufacturing cost.

Inventors

SA SHUANG
LIU FANGMING
GUO XIAOQIANG
FENG ZHOURONG
NA XUEYANG

Assignees

共享铸钢有限公司

Dates

Publication Date: 20260505
Application Date: 20250109

Claims (10)

1. The utility model provides a method for integrally casting a multilayer casting, the multilayer casting includes a plurality of layers of flange and a plurality of gusset, and a plurality of layers of flange structures are by a plurality of gusset staggered connection, its characterized in that includes following steps: S1, modeling a three-dimensional model of a multi-layer casting in three-dimensional software, and designing a layered through pouring system and a riser system distributed layer by layer on the three-dimensional model of the casting; S2, modeling an integral sand mold according to the three-dimensional model, wherein the integral sand mold comprises a sand core with an outer cavity profile sand mold and an inner cavity profile, wherein the sand core is formed by layering and accumulating a plurality of groups of sand molds; S3, determining the position of the parting surface of the integral sand mold according to the height of the integral sand mold and the casting structure, printing the integral sand mold by using a 3D printer and performing assembly; s4, pouring is completed.
2. The method for casting a multi-layer casting according to claim 1, wherein the rib plates comprise a plurality of inner cavity rib plates, a plurality of wide rib plates and a plurality of outer rib plates, the inner cavity rib plates are close to the inner cavity of the multi-layer casting, the wide rib plates are located between the adjacent flanges, and the outer rib plates are arranged outside the flanges.
3. The method of casting a multi-layer casting according to claim 1, wherein six open riser is designed on the first layer flange of the multi-layer casting.
4. A method of casting a multilayer casting according to claim 3, wherein a riser patch is provided between the open riser and a central portion of the casting.
5. The method for casting a multi-layer casting according to claim 1, wherein six blind risers are respectively arranged at the corresponding positions of the second layer flange and the third layer flange of the multi-layer casting.
6. The method for casting a multi-layer casting according to claim 5, wherein blind riser patches are provided between the outer side rib plate and the inner side rib plate of the second layer and the third layer.
7. The method for casting a multi-layer casting according to claim 1, wherein six large blind risers are arranged on the bottom flange of the multi-layer casting, and the large blind risers are uniformly distributed among the outer rib plates of the bottom layer.
8. The method of casting a multi-layer casting according to claim 7, wherein an in-gate is provided below each of the large blind risers.
9. The method of casting a multi-layer casting according to claim 1, wherein the gating system forms a layer-by-layer inflow system within the interior cavity of the casting.
10. The method of casting a multi-layer casting according to claim 9, wherein each of the cavity-in-layer webs of the casting is provided with three internal inlet ports.

Description

Integral casting method of multilayer casting Technical Field The invention relates to the technical field of casting, in particular to a method for integrally casting a multilayer casting. Background The existing multilayer bracket product is manufactured by welding steel plates and finally assembling and welding the steel plates into a whole. The manufacturing method has the defects that the production and purchase period of raw materials (steel plates) is long, the welding process is complex, the period is long, the welding quality is limited by manpower and technology, a large number of welding joints are inevitably produced in the assembly welding product, and the service performance of the bracket is seriously influenced, so that the welding joints are required to be finely polished after welding, and the post-treatment workload is great. The bracket has the problems of long period, high time and labor cost, difficult mass production, unstable product quality and the like in the traditional assembly welding production mode. If the casting is used for production, the multilayer bracket product has a multilayer flange and a transverse and longitudinal staggered rib plate structure, the structure is extremely complex, the whole casting difficulty is extremely high, and even if the casting is finished, the finished multilayer casting product has various quality problems such as shrinkage cavity, crack and the like. Disclosure of Invention The invention provides a method for casting a multi-layer casting, which solves the problems of large overall casting difficulty, long welding period, low economic benefit and difficult mass production of the multi-layer casting in the assembly welding forming process in the prior art. The object of the invention is achieved in that the method for the monolithic casting of a multilayer casting comprises the following steps: S1, modeling a three-dimensional model of a multi-layer casting in three-dimensional software, and designing a layered through pouring system and a riser system distributed layer by layer on the three-dimensional model of the casting; S2, modeling an integral sand mold according to the three-dimensional model, wherein the integral sand mold comprises a sand core with an outer cavity profile sand mold and an inner cavity profile, wherein the sand core is formed by layering and accumulating a plurality of groups of sand molds; S3, determining the position of the parting surface of the integral sand mold according to the height of the integral sand mold and the casting structure, printing the integral sand mold by using a 3D printer and performing assembly; s4, pouring is completed. In one embodiment, the rib plates comprise a plurality of inner cavity rib plates, a plurality of wide rib plates and a plurality of outer side rib plates, wherein the inner cavity rib plates are close to the inner cavity of the multilayer casting, the wide rib plates are located between the adjacent flanges, and the outer side rib plates are arranged outside the flanges. In one embodiment, six open risers are designed on the first layer flange of the multi-layer casting. In one embodiment, a riser patch is disposed between the open riser and the central portion of the casting. In one embodiment, six blind risers are respectively arranged at the corresponding positions of the second layer flange and the third layer flange of the multi-layer casting. In one embodiment, blind riser patches are arranged between the outer side rib plates and the inner side rib plates of the second layer and the third layer. In one embodiment, six large blind risers are arranged on the bottom flange plate of the multilayer casting, and the large blind risers are uniformly distributed among the outer rib plates of the bottom layer. In one embodiment, an in-gate is disposed below each of the large blind risers. In one embodiment, the gating system forms a layer-by-layer inflow system within the interior cavity of the casting. In one embodiment, each inner cavity rib plate of the casting is provided with three inner inlet openings. The multilayer casting integral casting technology comprises a casting process and a design of a modeling scheme, realizes integral forming of the multilayer casting in a casting mode, enables a whole machine manufacturer to directly obtain a finished product by purchasing the casting, avoids the manufacturing process of purchasing raw materials for multiple times and then performing assembly welding, effectively improves economic benefit and production period, greatly shortens the production period, saves labor and material consumption, and reduces manufacturing cost. Drawings FIG. 1 is a schematic view of a multi-layer casting; FIG. 2 is a schematic diagram of riser system distribution; FIG. 3 is a schematic diagram of a casting system distribution; FIG. 4 is a schematic diagram of the overall structure of a sand mold; FIG. 5 is a schematic view of a bottom layer sand mo