Electromagnetic induction medium-frequency furnace and high-strength prestress steel strand production process

An electromagnetic induction, intermediate frequency furnace technology, applied in the improvement of process efficiency, metal material coating process, furnace and other directions, can solve the problem of affecting the forming quality of steel strands, poor heat treatment effect of steel strands, and lack of surface cleaning of steel strands, etc. problems, to ensure the effect of heat treatment, improve the quality of molding, save water resources

Pending Publication Date: 2019-10-08
兰州斯凯特路桥预应力技术开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the problem that the existing electromagnetic induction intermediate frequency furnace has no surface cleaning function for the steel strand, when the steel strand directly passes through the electromagnetic induction intermediate frequency furnace, the heat treatment effect on the steel strand is relatively poor, which affects the forming of the steel strand The technical problem of quality, the present invention provides an electromagnetic induction intermediate frequency furnace and high-strength prestressed steel strand production process

Method used

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  • Electromagnetic induction medium-frequency furnace and high-strength prestress steel strand production process
  • Electromagnetic induction medium-frequency furnace and high-strength prestress steel strand production process
  • Electromagnetic induction medium-frequency furnace and high-strength prestress steel strand production process

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Embodiment 1

[0033] Such as Figures 1 to 3As shown, this embodiment provides an electromagnetic induction intermediate frequency furnace, including a furnace box 1, an inlet 2 is provided at one side of the furnace box 1, and a surface cleaning device 3 is provided on the side wall of the furnace box 1 near the inlet 2, and the surface cleaning device 3 includes a horizontal slide rail 3.1 arranged on the furnace box 1, a slide block 3.2 is slidably arranged on the horizontal slide rail 3.1, the slide block 3.2 is connected with a vertical mounting plate 3.3, and the end of the vertical mounting plate 3.3 away from the entrance 2 is connected There is a reciprocating movement mechanism 3.4, and the upper and lower ends of the vertical mounting plate 3.3 are detachably connected to the horizontal mounting plate A3.5 and the horizontal mounting plate B3.6 respectively located above and below the entrance 2, and the horizontal mounting plate A3.5 and the horizontal mounting plate B3. 6 The s...

Embodiment 2

[0039] Such as Figures 1 to 3 As shown, this embodiment is further optimized on the basis of embodiment 1. Specifically, an outlet 4 corresponding to the inlet 2 is provided on the furnace box 1, and an outlet 4 located between the inlet 2 and the outlet 4 is provided in the furnace box 1 The heating pipeline 5 is provided with a plurality of electromagnetic induction coils 6 inside the heating pipeline 5, and the heating pipeline 5 is provided with a temperature sensor 7, and the temperature sensor 7 is electrically connected to a display screen 8 located on the outer wall of the furnace box 1.

[0040] The outer wall of the heating pipe 5 is spirally wound with a water-cooling pipe 9, one end of the water-cooling pipe 9 is connected to a water storage tank 10 located outside the furnace box 1, a control valve is arranged between the water storage tank 10 and the water-cooling pipe 9, and the other end of the water-cooling pipe 9 A water cooler 11 located outside the furnace...

Embodiment 3

[0043] The present embodiment provides a high-strength prestressed steel strand production process, comprising the following steps:

[0044] S1: Use carbon steel hot-rolled wire rods with a diameter of 13mm and a strength of 1400MPa or more, pickled with hydrochloric acid with a concentration of 40-200g / L, then washed with water, phosphated with a phosphating solution at 70°C, and then phosphated at 70°C Saponification of the saponified liquid;

[0045] S2: Draw the carbon steel hot-rolled wire rod obtained in step S1 through a straight-in wire drawing machine, the drawing speed is 4m / s, the water cooling temperature is controlled at 40-50°C, and a steel wire 6 with a diameter of 5.05mm is drawn. 1 steel wire with a diameter of 5.25mm;

[0046] S3: the steel wire with a diameter of 5.25mm obtained in step S2 is used as a core wire, and 6 steel wires with a diameter of 5.05mm are used as side wires, and are plied with a plying machine to obtain a steel strand;

[0047] S4: St...

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Abstract

The invention discloses an electromagnetic induction medium-frequency furnace and a high-strength prestress steel strand production process, and relates to the technical field of steel strand production. The electromagnetic induction medium-frequency furnace comprises a furnace box, wherein an inlet is formed in one side end of the furnace box, a surface cleaning device is arranged on the side wall, close to the inlet, of the furnace box, the surface cleaning device comprises a horizontal sliding rail arranged on the furnace box, a sliding block is arranged on the horizontal sliding rail, thesliding block is connected with a vertical mounting plate, the upper end and the lower end of the vertical mounting plate are detachably connected with a horizontal mounting plate A and a horizontal mounting plate B which are located on the upper side and the lower side of the inlet respectively, and the side, close to the inlet, of the horizontal installation plate A and the side, close to the inlet, of the horizontal installation plate B are respectively provided with a wiping layer. According to the high-strength prestress steel strand production process, chlorohydric acid pickling, water washing, phosphorization and saponification are sequentially carried out, corresponding steel wires are and drawn out through a wire drawing machine, stranding of the steel wires are performed througha stranding machine, the steel strand is treated by adopting the electromagnetic induction medium-frequency furnace, and finally water cooling treatment is carried out. The steel strand prepared by the production process has the advantages that the strength is high, and the tensile strength can reach more than 2200 MPa.

Description

technical field [0001] The invention relates to the technical field of steel strand production, and more specifically relates to an electromagnetic induction intermediate frequency furnace and a high-strength prestressed steel strand production process. Background technique [0002] The steel strand is a steel product composed of multiple steel wires twisted together. The surface of carbon steel can be added with galvanized layer, zinc-aluminum alloy layer, aluminum-clad layer, copper-plated layer, epoxy resin, etc. as required. Classification according to usage: prestressed steel strands, (for electric power) galvanized steel strands and stainless steel strands, among which the prestressed steel strands are coated with anti-corrosion grease or paraffin and coated with HDPE, which is called unbonded prestressed steel strands. Prestressed steel strands are also made of galvanized or galvanized aluminum alloy steel wire. Classified according to material properties: steel stra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/42C21D9/60C21D9/573C21D8/06C23G1/08C23G3/02C23C22/73B21C37/04B21C43/02D07B1/06
CPCC21D1/42C21D9/60C21D8/065C21D9/5732C23G1/08C23G3/02C23C22/73B21C37/04B21C43/02D07B1/0693D07B2201/2039D07B2201/2009D07B2205/3046D07B2801/10Y02P10/25
Inventor 薛广浩牛东坡
Owner 兰州斯凯特路桥预应力技术开发有限公司
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