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Machining process of double-metal band saw

A bi-metal strip and processing technology, applied in metal processing equipment, metal sawing equipment, tools of sawing machines, etc., can solve the problem of unreasonable alloy composition, poor matching of tooth tip material and back material, and poor mechanical properties. to requirements, etc.

Active Publication Date: 2017-05-24
PUTIAN HENGDA MACHINERY & ELECTRICITY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with traditional circular saws and bow saws, bimetallic band saws have many mechanical advantages such as strong adaptability and the ability to withstand huge tension. However, existing bimetallic band saws have many defects and cannot meet high The requirements of efficiency, high precision, long life and fast cutting and processing are mainly due to the poor match between the tip material and the back material, unreasonable alloy composition, and mechanical properties that cannot meet the requirements, which affect the cutting efficiency and service life of the saw blade.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step 1: Material selection: the sawtooth material is selected as high-speed steel, and the sawback material is selected as base steel. The high-speed steel includes the following components in weight percentage: C 0.95%, Si 0.25%, Mn 0.3%, Cr 10%, W 4.3%, Mo 0.2%, V 1.2%, Ni 0.2%, Co 0.8%, Nb 0.8%, S≤0.005%, P≤0.005%, and the balance is Fe. Use the trimming machine to trim the base steel until the welding surface and the back side are smooth, without defects such as fibroids and obvious ripples, and there are no marks of strain or extrusion on the surface. Along the weld of the base steel, the pulsed laser beam is used to roughen it, and a micropore array with a pore size ranging from 100-150 μm is generated on the surface of the weld of the base steel;

[0041] Step 2: Use laser welding to weld the trimmed saw back material and the sawtooth material to form the embryo body of the bimetallic saw band. The first metallographic inspection of the welded seam section should...

Embodiment 2

[0059] Step 1: Material selection: the sawtooth material is selected as high-speed steel, and the sawback material is selected as base steel. The high-speed steel includes the following components in weight percentage: C 1.0%, Si 0.28%, Mn 0.3%, Cr 11%, W 4.3%, Mo 0.5%, V0.8%, Ni 0.16%, Co 0.8%, Nb 0.6, S≤0.005%, P≤0.005%, the balance is Fe. Use the trimming machine to trim the base steel until the welding surface and the back side are smooth, without defects such as fibroids and obvious ripples, and there are no marks of strain or extrusion on the surface. Along the weld of the base steel, the pulsed laser beam is used to roughen it, and a micropore array with a pore size ranging from 100-150 μm is generated on the surface of the weld of the base steel;

[0060] Step 2: Use laser welding to weld the trimmed saw back material and the sawtooth material to form the embryo body of the bimetallic saw band. The first metallographic inspection of the welded seam section should be ca...

Embodiment 3

[0078] Step 1: Material selection: the sawtooth material is selected as high-speed steel, the saw back material is selected as base steel, and the high-speed steel includes the following components in weight percentage: C 1.0%, Si 0.26%, Mn 0.25%, Cr 11%, W4.2%, Mo 0.4%, V1%, Ni 0.18%, Co 0.8%, Nb 0.7%, S≤0.005%, P≤0.005%, and the balance is Fe. Use the trimming machine to trim the base steel until the welding surface and the back side are smooth, without defects such as fibroids and obvious ripples, and there are no marks of strain or extrusion on the surface. Along the weld of the base steel, the pulsed laser beam is used to roughen it, and a micropore array with a pore size ranging from 100-150 μm is generated on the surface of the weld of the base steel;

[0079] Step 2: Use laser welding to weld the trimmed saw back material and the sawtooth material to form the embryo body of the bimetallic saw band. The first metallographic inspection of the welded seam section should b...

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Abstract

The invention provides a machining process of a double-metal band saw. A saw back material and a saw tooth material are welded by laser; then, the bright annealing treatment is performed; a two-roller rolling mill is used for welding line leveling, straightening, repeated extrusion and fixed-length material preparation to obtain a coiled band; then, the tooth milling, the tooth material cleaning, the tooth separation, the quenching treatment and the subzero treatment are performed; and the rolling straightening, the sand blasting, the code spraying and the root band butt welding are performed after secondary tempering treatment to obtain the double-metal band saw. Compared with the prior art, the machining process uses carbon, silicon, manganese, chromium, tungsten, molybdenum, vanadium, nickel, cobalt, niobium, sulfur and iron as components of the saw tooth material, and improves the hardness and the toughness of the double-metal band saw through adjusting the contents of all the components. Secondly, the machining process adopts such modes as quenching treatment and subzero treatment to guarantee the tempering sufficient degree, and improves the characteristics of high hardness, high toughness and tidy incision of the double-metal band saw.

Description

technical field [0001] The invention relates to the technical field of cutting dies, in particular to a processing technology of a bimetallic band saw. Background technique [0002] Bi-metal band saw, also known as bi-metal band saw blade, is composed of saw teeth and saw back, and is mainly used for cutting various metal materials. It is one of the most advanced cutting tools in the world today. The tip material of the bimetal band saw blade is super carbon high speed steel or other high performance steel, and the back material (saw back material) is a metal cutting band saw blade made of high alloy spring steel, which is made of high speed steel and alloy spring steel by vacuum electron beam (Carbon dioxide or fiber laser welding machine) After welding, it is manufactured through a series of cold and hot processing processes. The bimetallic band saw is widely used and can be used with any type of band sawing machine. It is suitable for continuous sawing of metals of almos...

Claims

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Application Information

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IPC IPC(8): B23P15/28B23D61/12
CPCB23D61/12B23P15/28
Inventor 林正华
Owner PUTIAN HENGDA MACHINERY & ELECTRICITY IND
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