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Tool steel material for saw blades

A tool steel and saw blade technology, applied in the field of alloys, can solve the problems of saw blade becoming brittle, easy to break, element precipitation, etc., and achieve the effect of improving strength and uniform structure

Inactive Publication Date: 2014-02-12
虞伟财
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for saw blade tool steels, because of the requirement to use thinner materials, during the production process using powder metallurgy technology, there is a problem of element precipitation due to relatively large temperature changes, which makes the inside of the saw blade brittle and easy to break

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Described preparation method is:

[0024] Calculate the amount of each composition for batching, and its composition is by weight percentage, 1.8% carbon, 0.35% silicon, 4.2% chromium, 8.2% tungsten, 4.2% vanadium, 3.5% molybdenum, 0.2% cobalt, 1.3% manganese, 0.12% titanium, 0.8% copper and aluminum, 0.5% boron, 0.003% rare earth containing niobium and yttrium, and the balance is iron. Among them, tungsten, vanadium, titanium, and rare earth are respectively made of tungsten Iron, vanadium iron, titanium ferroalloy and rare earth ferroalloys are used for batching; the weight ratio of copper and aluminum is 2:1, the rare earth in the rare earth ferroalloy accounts for 15% by weight, and the weight ratio of niobium and yttrium is 3:2;

[0025] Put carbon, silicon, iron, chromium, ferro-tungsten, ferro-vanadium, ferro-titanium, molybdenum, cobalt, and manganese into the furnace according to the calculated amount, heat and melt into a liquid, then add copper, aluminum and ...

Embodiment 2

[0031] Described preparation method is:

[0032] Calculate the amount of each composition for batching, the composition is by weight percentage, 2.0% carbon, 0.5% silicon, 4.3% chromium, 8.3% tungsten, 4.5% vanadium, 3.8% molybdenum, 0.3% cobalt, 1.4% manganese, 0.15% titanium, 1.0% copper and aluminum, 0.6% boron, 0.004% rare earth containing niobium and yttrium, and the balance is iron. Among them, tungsten, vanadium, titanium, and rare earth are respectively made of tungsten Ferro-vanadium, ferro-titanium and rare earth ferroalloy ingredients;

[0033] Put carbon, silicon, iron, chromium, ferro-tungsten, ferro-vanadium, ferro-titanium, molybdenum, cobalt, and manganese into the furnace according to the calculated amount, heat and melt into a liquid, then add copper, aluminum and rare earth, the temperature is 1250-1350 ℃ for 2 hours;

[0034] Ensure that the temperature is 1000-1050 ℃ for constant temperature casting;

[0035] Cool down in stages at a constant rate. In t...

Embodiment 3

[0039] Calculate the amount of each composition for batching, and its composition is by weight percentage, 2.0% carbon, 0.45% silicon, 4.2% chromium, 8.2% tungsten, 4.25% vanadium, 3.6% molybdenum, 0.22% cobalt, 1.32% manganese, 0.12% titanium, 0.8% copper and aluminum, 0.53% boron, 0.003% rare earth containing niobium and yttrium, and the balance is iron. Among them, tungsten, vanadium, titanium, and rare earth are respectively made of tungsten Ferro-vanadium, ferro-titanium and rare earth ferroalloy ingredients;

[0040] Put carbon, silicon, iron, chromium, ferro-tungsten, ferro-vanadium, ferro-titanium, molybdenum, cobalt, and manganese into the furnace according to the calculated amount, heat and melt into a liquid, then add copper, aluminum and rare earth, the temperature is 1250-1350 ℃ for 2 hours;

[0041] Ensure that the temperature is 1000-1050 ℃ for constant temperature casting;

[0042] Cool down in stages at a constant rate. In the first stage, the temperature is...

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Abstract

The invention relates to a tool steel material for saw blades. The tool steel material for saw blades comprises the following components in percentage by weight: 1.8-2.0% of carbon, 0.35-0.5% of silicon, 4.2-4.3% of chromium, 8.2-8.3% of tungsten, 4.2-4.5% of vanadium, 3.5-3.8% of molybdenum, 0.2-0.3% of cobalt, 1.3-1.4% of manganese, 0.12-0.15% of titanium, 0.8-1.0% of copper and aluminum, 0.5-0.6% of boron, 0.003-0.004% of rare earth containing niobium and yttrium, and the balance of iron. The technical scheme provided by the invention ensures that the vanadium, cobalt and molybdenum, which are beneficial to enhancing strength and have certain toughness, and the copper and aluminum for enhancing toughness can be better combined with the tungsten, chromium and titanium so as to reduce precipitation.

Description

technical field [0001] The invention belongs to the field of alloys, and refers to a tool steel, in particular to a tool steel material for a saw blade. Background technique [0002] Saw blades are mainly divided into iron saw blades and wooden saw blades according to different objects of use. In order to ensure the working efficiency of the saw blades, tool steel is used to process the saw blades, but the composition of the tool steel is adjusted according to the different usage environments of the saw blades. [0003] In actual use, the proportion of saw blades being discarded due to wear to a certain extent is not high, and the largest proportion is broken due to the brittleness of saw blades. However, the purpose of tool steel is to use its high strength to realize its function, and increasing the toughness of alloy steel will affect the strength of alloy steel. In recent years, it has been found that adding some characteristic elements in alloy steel, such as tungsten a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/36C22C33/06
Inventor 虞伟财
Owner 虞伟财
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