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Cast steel node manufacturing process

A production process and steel casting node technology, applied in the control of molten metal pouring from the casting ladle, casting mold, casting mold composition, etc., can solve the problem that welding residual stress cannot be eliminated, material utilization rate is not high, and deformation is difficult to predict and other problems, to achieve the effect of convenient on-site construction and installation, good spatial angle consistency, and convenient operation

Inactive Publication Date: 2015-01-14
SICHUAN KAINENG ELECTROMECHANICAL EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the joints of the steel frame structure generally adopt the welding process. The use of this joint has the characteristics of heavy on-site production workload, low material utilization rate, complex welding structure, unpredictable deformation, welding residual stress cannot be eliminated, and welding difficulty.

Method used

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  • Cast steel node manufacturing process
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A production process of cast steel node. The main components of the node are calculated by weight percentage, C=0.2~0.3, Si=0.6~0.8, Mn=1.1~1.3, P≤0.035, S≤0.01, Cu≤0.3, it It includes the following steps:

[0014] S1. Furnace charge equipment and molten metal smelting. The charge includes scrap steel, pouring risers, waste castings, steel scraps and pig iron, using electric arc furnace three-phase alkaline electric arc furnace, smelting by oxidation, and finally deoxidizing under white slag;

[0015] S2. Modeling process, using the α-set modeling method to select alkali phenolic resin, curing agent, and sand modeling. The resin addition is 1.7% of the sand weight, and the curing agent is 20% of the resin weight. Sand, curing agent, and resin are used. Stir and mix in sequence;

[0016] S3. Pouring process. Single injection hole bottom pouring ladle is used for pouring, horizontal pouring and horizontal cooling are used. During pouring, the inner casting surface rises at a sp...

Embodiment 2

[0025] A production process of cast steel node. The main components of the node are calculated by weight percentage, C=0.2~0.3, Si=0.6~0.8, Mn=1.1~1.3, P≤0.035, S≤0.01, Cu≤0.3, it It includes the following steps:

[0026] S1. Furnace charge equipment and molten metal smelting. The charge includes scrap steel, pouring risers, waste castings, steel scraps and pig iron, using electric arc furnace three-phase alkaline electric arc furnace, smelting by oxidation, and finally deoxidizing under white slag;

[0027] S2. Modeling process. Alkali phenolic resin, curing agent and sand are selected by the α-set modelling method. The resin addition is 1% of the sand weight, and the curing agent is 15% of the resin weight. Sand, curing agent, and resin are used. Stir and mix in sequence;

[0028] S3. Pouring process. Single injection hole bottom pouring ladle is used for pouring, horizontal pouring and horizontal cooling are used. During pouring, the inner casting surface rises at a speed of 12mm...

Embodiment 3

[0037] A production process of cast steel node. The main components of the node are calculated by weight percentage, C=0.2~0.3, Si=0.6~0.8, Mn=1.1~1.3, P≤0.035, S≤0.01, Cu≤0.3, it It includes the following steps:

[0038] S1. Furnace charge equipment and molten metal smelting. The charge includes scrap steel, pouring risers, waste castings, steel scraps and pig iron, using electric arc furnace three-phase alkaline electric arc furnace, smelting by oxidation, and finally deoxidizing under white slag;

[0039] S2. Modeling process, using the α-set modeling method to select alkali phenolic resin, curing agent, and sand modeling. The resin addition is 2% of the sand weight, and the curing agent is 25% of the resin weight. Sand, curing agent, and resin are used. Stir and mix in sequence;

[0040] S3. Pouring process. Single injection hole bottom pouring ladle is used for pouring, horizontal pouring and horizontal cooling are used. During pouring, the inner casting surface rises at a spee...

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Abstract

The invention discloses a cast steel node manufacturing process, which comprises the following steps: S1, preparing charging and smelting molten metal; S2, carrying out a molding process by selecting an alkali phenol resin, a solidifying agent and sand by the virtue of an Alpha-set modeling method; S3, carrying out a pouring process by using a single-injection-hole and bottom-pouring-type steel ladle as well as the use of pouring in lying and cooling in lying; and S4, carrying out a heat treatment process by using a well-type heat treatment furnace. The invent has the benefits that the node manufacturing process is provided, casting for modeling at once is realized, and nodes in various shapes can be designed according to the design requirements, the spatial angle consistency of a manufactured cast steel node is excellent, the mechanical properties are excellent, and site construction and installation are facilitated; and a sand mold consisting of the alkaline phenol resin and the solidifying agent is adopted, which has excellent deformability and collapsibility as well as high regeneration efficiency, so that the cost is saved.

Description

Technical field [0001] The invention relates to the technical field of manufacturing steel structural parts, in particular to a production process of cast steel nodes. Background technique [0002] With the development of spatial structure, the span of the structure is getting larger and larger, and the form of the structure is correspondingly complex and diverse. In recent years, the continuous emergence of new structural systems has made the connection between components in the structure increasingly complex, and traditional cast steel joints can no longer adapt to the development of modern steel structures. Therefore, finding new materials and new processes with excellent stress performance, simple casting process, and higher economic efficiency has become an urgent task for steel structure technicians. At present, the joints of steel frame structure generally adopt welding technology. The use of this kind of joints has the characteristics of large on-site production workload...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D25/02B22C1/22B22C1/10B22D37/00B22C9/02
Inventor 曹东泉
Owner SICHUAN KAINENG ELECTROMECHANICAL EQUIP MFG
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