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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 ladle, casting mold, casting mold composition, etc., can solve the problem that welding residual stress cannot be eliminated, deformation is difficult to predict, and material utilization rate is not high. problems, to achieve the effect of convenient on-site construction and installation, convenient operation, and good spatial angle consistency

Inactive Publication Date: 2013-01-16
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 joints, the main components of which 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 Include the following steps:

[0014] S1. Furnace material equipment and molten metal smelting. Furnace materials include scrap steel, pouring risers, waste castings, steel shavings and pig iron, using electric arc furnace three-phase basic electric arc furnace, smelting by oxidation method, and finally deoxidizing under white slag;

[0015] S2. Molding process, using the α-set molding method to select alkali phenolic resin, curing agent, and sand for molding. The amount of resin added is 1.7% of the weight of the sand, and the amount of curing agent added is 20% of the weight of the resin. Sand, curing agent, and resin Stirring and mixing in the order;

[0016] S3, pouring process, pouring adopts a single-hole bottom pouring ladle, adopts horizontal pouring and horizontal cooling, the rising speed o...

Embodiment 2

[0025] A production process of cast steel joints, the main components of which 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 Include the following steps:

[0026] S1. Furnace material equipment and molten metal smelting. Furnace materials include scrap steel, pouring risers, waste castings, steel shavings and pig iron, using electric arc furnace three-phase basic electric arc furnace, smelting by oxidation method, and finally deoxidizing under white slag;

[0027] S2. Molding process, using the α-set molding method to select alkali phenolic resin, curing agent, and sand for molding. The amount of resin added is 1% of the sand weight, and the amount of curing agent added is 15% of the resin weight. Sand, curing agent, and resin Stirring and mixing in the order;

[0028] S3, pouring process, pouring adopts a single hole bottom injection ladle, adopts horizontal pouring and horizontal cooling, the rising speed of the inner ca...

Embodiment 3

[0037] A production process of cast steel joints, the main components of which 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 Include the following steps:

[0038] S1. Furnace material equipment and molten metal smelting. Furnace materials include scrap steel, pouring risers, waste castings, steel shavings and pig iron, using electric arc furnace three-phase basic electric arc furnace, smelting by oxidation method, and finally deoxidizing under white slag;

[0039] S2. Molding process, using the α-set molding method to select alkali phenolic resin, curing agent, and sand for molding. The amount of resin added is 2% of the weight of the sand, and the amount of curing agent added is 25% of the weight of the resin. Sand, curing agent, and resin Stirring and mixing in the order;

[0040] S3, pouring process, pouring adopts a single-hole bottom pouring ladle, adopts horizontal pouring and horizontal cooling, the rising speed of ...

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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 the space structure, the span of the structure is getting bigger and bigger, and the form of the structure is correspondingly complex and diverse. In recent years, the emergence of new structural systems has made the connection forms between components in the structure increasingly complex. The traditional cast steel joints can no longer adapt to the development of modern steel structures. Therefore, finding new materials and new processes with excellent mechanical performance, simple casting process and higher economy has become a top priority for steel structure technicians. At present, the joints of steel frame structures generally adopt welding technology. The use of such joints has the characteristics of heavy on-site production workload, low material...

Claims

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Application Information

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