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Production and mould for machining spiral mould for ribbed steel bars

A production method and ribbed steel bar technology, applied in the direction of wire drawing dies, etc., can solve the problems of not being able to meet batch and industrial production, complicated processing technology, and low production efficiency, and achieve stable and stable product quality, which is beneficial to The effect of batch and industrial production

Inactive Publication Date: 2003-04-02
ZIGONG CEMENTED CARBIDE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method reduces the labor intensity of workers and can also ensure the processing quality, it still has complicated processing technology and can only be produced in a single piece. It takes more than ten hours to process each product, and the production efficiency is low and the cost is high. Can not meet the requirements of batch and industrial production

Method used

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  • Production and mould for machining spiral mould for ribbed steel bars
  • Production and mould for machining spiral mould for ribbed steel bars
  • Production and mould for machining spiral mould for ribbed steel bars

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] In this embodiment, the spiral die head (material is YG8X) for drawing Φ7mm reinforced steel bar is taken as an example:

[0019] A. Material preparation: 93 kg of WC powder (Fischer particle size 1.0-4.0 μm) containing 93.6% of W (tungsten) and 7 kg of cobalt-containing 98.8% cobalt powder (Fischer particle size 1.5-4.0 μm) were wet-milled and mixed for 40 hours. It is ethanol with a purity ≥ 95.5%; it is filtered through a sieve with a pore size of 45 μm and precipitated for 4 hours, and then sent to a dryer with a vapor pressure of 0.05 Mpa for drying; the dried powder is then vibrated and sieved through a sieve with a pore size of 200 μm After mixing with rubber, the concentration of rubber solution is 11.5%, and the amount of addition is 9000mL. After stirring evenly, put it into a drying cabinet with a vapor pressure of 0.35Mpa, and dry it for 120 minutes; finally, grind the dried material through a 450μm aperture sieve to obtain the mixed powder ready for use;

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Abstract

A helical die for making ribbed reinforcing steel bars is composed of bottom pad, sleeve barrel, limiter, core rod with helical slot on its cylindrical surface and punch head. It is prepared through proportioning powdered raw materials, die pressing, baking, sintering and polishing. Its advantages are high productivity and quality and low cost.

Description

technical field [0001] The invention belongs to a production method of a wire drawing (steel bar) die head, and a mold used for forming the die head, in particular a production method of a spiral die head for processing cold-drawn (tied) ribbed steel bars and the used forming die, The die head is especially suitable for producing cold-drawn (rolled) steel bars for construction projects and prestressed concrete components. Background technique [0002] Ribbed steel bars are generally used as skeletons in construction engineering, concrete prefabricated components and other industries, especially in large bridges, elevated highways, reservoir dams, oil drilling platforms, docks and other industries. However, as a key component for producing such ribbed steel bars, the spiral die head is difficult to process and manufacture due to its hard material, and the production cost is also high. At present, there are two main methods of producing such die heads: one is manual productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/00
CPCB22F2005/004B22F5/007
Inventor 于军慧罗广忠羊建高熊继王典才
Owner ZIGONG CEMENTED CARBIDE CORP
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