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Saw blade high frequency annealing method

A technology of high-frequency annealing and sawing, which is applied in the field of technological innovation and can solve problems such as environmental pollution

Inactive Publication Date: 2010-01-13
QINGDAO RIJING HARDWARE TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on the annual output of about 2 million boxes (30,000 tons), the water consumption is 60,000m 3 , worth 108,000 yuan; consumes NaNO 3 and NaNO 2 704 tons, worth more than 1.55 million yuan; 2,000 tons of fuel coal, worth 1.8 million yuan. Moreover, the use of these raw materials has caused serious pollution to the environment

Method used

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Examples

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Embodiment Construction

[0010] First place the cleaned saw blade in the tooling vehicle of the head-removing equipment, and load the saw blade (10-20) Kg each time, with both ends aligned and moderately tight; then turn on the high-frequency head-removing equipment, and push the pulley with the saw blade To the coil of the high-frequency equipment, there is no need to stop, so that both ends of the saw blade pass through the induction coil evenly; finally, the saw blade annealed through the coil is put into the tempering fixture, and then waits to enter the next tempering process. Low energy consumption, no pollution, low cost, no danger to operating workers.

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Abstract

The invention relates to a saw blade high frequency annealing method which is characterized in that the equipment working voltage is 380V / 50Hz; the working oscillatory power is 30-60KVA; the working oscillation frequency is 30-100kHz; every set of equipment can anneal 10-20kg / min; the annealing temperature is 550-650 DEG C; the annealing length between the two ends of a saw blade is 20-30mm; the hardness is HRA62-75 after annealing. The method has the advantages of low energy consumption, no pollution, low cost and no danger for operating workers.

Description

Technical field: [0001] The invention relates to a high-frequency annealing method for a saw blade, in particular to a high-frequency annealing method for a hacksaw blade, and belongs to the field of technological innovation. Background technique: [0002] my country began to produce hand-used hacksaw blades in 1954, and has a history of more than 50 years. During this period, the traditional production process, especially the annealing process, has been used. The chemical raw material NaNO used in the process 3 and NaNO 2 , high energy consumption, and serious pollution. Each ton of saw blade consumes 3m 3 Water cleaning, and consume 23.5Kg (NaNO 3 and NaNO 2 ), standard coal 67Kg. Based on the annual output of about 2 million boxes (30,000 tons), the water consumption is 60,000m 3 , worth 108,000 yuan; consumes NaNO 3 and NaNO 2 704 tons, worth more than 1.55 million yuan; 2,000 tons of fuel coal, worth 1.8 million yuan. Moreover, the use of these raw materials h...

Claims

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Application Information

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IPC IPC(8): C21D9/24C21D1/26
Inventor 孙卫国宋清威
Owner QINGDAO RIJING HARDWARE TOOLS
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