A rolling mill plum blossom frame casting device
By setting up patches on the upper part of the plum blossom hole inside the mold to form a steel water shrinkage channel, the problem of internal tissue density of the plum blossom stand products of large rolling mills is solved, product quality is improved, production costs are reduced and process simplified.
Patent Information
- Application Number
- CN202421491036.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The prior art is difficult to achieve internal tissue density in large-scale rolling mill plum blossom stand products, resulting in unqualified ultrasonic and magnetic powder flaw detection, difficult and long repair time, affecting production costs and delivery time.
A patch is set up on the upper part of the plum blossom hole inside the mold, and a water-shrinkage channel is formed during casting, making the internal tissue of the casting dense and meeting the product flaw detection requirements.
By forming a water-shrinkage channel for steel, the quality of castings is improved, the production cost is reduced, the construction cycle is shortened, and the finishing process is simplified, making it easy to use.
Smart Images
Figure CN222740228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a casting mould, in particular to a rolling mill frame casting device, belonging to the technical field of rolling mill frame casting. Background Art
[0002] The plum blossom frame of a large rolling mill is an important equipment part of the metal profile pressing equipment. The overall requirements for ultrasonic flaw detection and magnetic particle flaw detection are in accordance with Level 2 in JB / T5000.14. When producing the plum blossom frame products of a large rolling mill, due to the complex structure, the overall shrinkage feeding channel is not smooth, and it is particularly easy for the internal and plum blossom parts of the product to fail to meet the product quality requirements; this problem has not been completely solved by changing the position of the ingates, the position of the risers, the pouring temperature and other process measures, resulting in the product being unqualified in ultrasonic and magnetic particle flaw detection, difficult and time-consuming repair, failure to complete product delivery on schedule, and high production costs. Utility Model Content
[0003] The technical problem to be solved by the utility model is: to overcome the shortcomings of the prior art, to provide a rolling mill plum blossom frame casting device, to change the plum blossom part structure inside the mold, to ensure that a molten steel shrinkage feeding channel is formed inside the product, to make the internal structure of the product dense, and to meet the product flaw detection requirements.
[0004] The technical solution adopted by the utility model to solve the technical problem is:
[0005] A rolling mill plum blossom frame casting device comprises a sand box and a mold, wherein the mold is arranged in the sand box, a riser is arranged on the top of the mold, a patch block is arranged on the upper part of the plum blossom hole inside the mold, and an internal sand core is arranged below the patch block.
[0006] The patch is located below the riser.
[0007] The height of the patch block is one third of the height of the plum blossom hole inside the mold.
[0008] The sand box is divided into an upper sand box and a lower sand box. The upper sand mold and the lower sand mold are symmetrically distributed in an upper and lower direction. The outer parts of the upper sand mold and the lower sand mold are respectively provided with outer shells, and the outer shells of the upper sand mold and the lower sand mold are fixed together by bolts.
[0009] The positive beneficial effects of the utility model are:
[0010] 1. The utility model arranges a patch block on the upper part of the plum blossom hole inside the mold to ensure that a molten steel shrinkage compensation channel is formed inside during casting, so that the internal structure of the casting is dense, thereby meeting the product flaw detection requirements, improving the quality of the casting, reducing production costs, and shortening the construction period.
[0011] 2. The utility model utilizes the mold to cast products. After casting, the patch and riser in the plum blossom hole of the casting need to be removed, which greatly reduces the workload of the finishing process. The utility model is easy to use, simple to operate, and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 Schematic diagram of the structure of the mold;
[0013] Figure 2 A physical picture of the finished product of the utility model;
[0014] Among them: 1-mold, 2-riser, 3-patch block, 4-internal sand core. DETAILED DESCRIPTION
[0015] The utility model is further explained and illustrated below in conjunction with the accompanying drawings:
[0016] For example, see Figure 1-Figure 2 A rolling mill plum blossom frame casting device includes a sand box and a mold 1. The mold 1 is arranged in the sand box, a riser 2 is arranged on the top of the mold 1, a patch block 3 is arranged on the upper part of the plum blossom hole inside the mold 1, and an internal sand core 4 is arranged below the patch block 3.
[0017] The patch block 3 is located below the riser 2 .
[0018] The height of the patch 3 is one third of the height of the plum blossom hole inside the mold 1 .
[0019] The sand box is divided into an upper sand box and a lower sand box. The upper sand box and the lower sand box are symmetrically distributed in an upper and lower direction. The outer parts of the upper sand box and the lower sand box are respectively provided with outer shells, and the outer shells of the upper sand box and the lower sand box are fixed together by bolts.
[0020] In the above description, the top of the patch is aligned with the top of the mold, and the riser is located above the patch and the mold.
[0021] In the above description, the finished product cast using the mold needs to have the riser and the patch removed.
[0022] In the above description, the patch is cast at the upper position of the plum blossom structure inside the mold.
[0023] In the above description, the overall outer shape sample (divided into upper and lower box samples) + the internal integral core after the structure is changed, and the riser is set on the upper part; the upper and lower box outer shapes (including risers and pouring systems) are made first, and then the internal integral sand core after the structure is changed is made, and the air venting measures are taken. After all the outer shapes and sand cores are painted, the core is lowered and the box is buckled through the positioning cross line, and the air venting is done well; by improving the internal plum blossom part structure of such products, the flaw detection quality of the products is effectively guaranteed; the production efficiency is improved by 10%~15%, and the production cost is reduced by 3%~5%; the on-time delivery of the products is guaranteed.
[0024] The utility model arranges a patch block on the upper part of the plum blossom hole inside the mold to ensure that a molten steel shrinkage compensation channel is formed inside during casting, so that the internal structure of the casting is dense, thereby meeting the product flaw detection requirements, improving the quality of the casting, reducing production costs, and shortening the construction period.
Claims
1. A rolling mill plum blossom frame casting device, comprising a sand box and a mold (1), characterized in that: A mold (1) is arranged in the sand box, a riser (2) is arranged on the top of the mold (1), a patch (3) is arranged above the plum blossom hole inside the mold (1), and an internal sand core (4) is arranged below the patch (3).
2. A rolling mill plum blossom frame casting device according to claim 1, characterized in that: The patch block (3) is located below the riser (2).
3. A rolling mill plum blossom frame casting device according to claim 1, characterized in that: The height of the patch block (3) is one third of the height of the plum blossom hole inside the mold (1).
4. A rolling mill plum blossom frame casting device according to claim 1, characterized in that: The sand box is divided into an upper sand box mold and a lower sand box mold, and the upper sand box mold and the lower sand box mold are symmetrically distributed in an upper and lower shape. The outer shells of the upper sand box mold and the lower sand box mold are respectively provided on the outside, and the outer shells of the upper sand box mold and the lower sand box mold are fixed together by bolts.