CN103572167A - Preparation method of tool steel material for saw blades - Google Patents
Preparation method of tool steel material for saw blades Download PDFInfo
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- CN103572167A CN103572167A CN201310497603.2A CN201310497603A CN103572167A CN 103572167 A CN103572167 A CN 103572167A CN 201310497603 A CN201310497603 A CN 201310497603A CN 103572167 A CN103572167 A CN 103572167A
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Abstract
The invention relates to a preparation method of 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
The invention belongs to alloy field, refer to a kind of tool steel, refer to especially a kind of saw blade tool steel material preparation method.
Background technology
Saw blade, according to the difference of using object, is mainly divided into iron saw blade and wood saw bar, and in order to guarantee the working efficiency of saw blade, all tool using steel is processed saw blade, just according to the difference of saw blade environment for use, adjusts the composition of tool steel.
Existing saw blade is in actual use, not high because may wear to the ratio to a certain degree going out of use, maximum ratio be that fragility because of saw blade fractures.But the object of tool steel utilizes its high strength to realize its effect, and the toughness that increases steel alloy will affect the intensity of steel alloy, discovered in recent years, the element that adds Some features in steel alloy, if tungsten, manganese etc. are in certain proportion situation, steel alloy can improve toughness in proof strength.
But in common steel alloy founding, because the difference of the solubleness of element, particularly in casting cycle and the later stage, can cause that tool steel is conducive to the element that intensity improves again toughness and separate out from tissue.Since powder metallurgy technology is employed, the ratio that improves certain dvielement in tool steel becomes possibility, and is applied in the smelting of tool steel.But for saw blade class tool steel, because it require to use thinner material, in adopting powder metallurgy technology production process, because temperature variation is relatively large, occur that element separates out problem, and cause the inside of saw blade become fragile and easily fracture.
Summary of the invention
The object of the invention is, by the technical program, by the proportioning to tool steel material, improve intensity and the toughness of tool steel, reduce separating out of favourable element, improve performance and the work-ing life of tool steel.
The present invention is achieved by the following technical solutions:
A kind of saw blade tool steel material, its composition is by weight percentage, the rare earth that contains niobium and yttrium of the carbon of 1.8-2.0%, the silicon of 0.35-0.5%, the chromium of 4.2-4.3%, the vanadium of the tungsten of 8.2-8.3%, 4.2-4.5%, the cobalt of the molybdenum of 3.5-3.8%, 0.2-0.3%, the titanium of the manganese of 1.3-1.4%, 0.12-0.15%, the boron of the copper of 0.8-1.0% and aluminium, 0.5-0.6%, 0.003-0.004%, surplus is iron.
As further improvement, described saw blade tool steel material, 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 aluminium, 0.53% boron, 0.003% the rare earth that contains niobium and yttrium, surplus is iron.
Described preparation method is:
Calculating each amount forming prepares burden, its composition is by weight percentage, the rare earth that contains niobium and yttrium of the carbon of 1.8-2.0%, the silicon of 0.35-0.5%, the chromium of 4.2-4.3%, the vanadium of the tungsten of 8.2-8.3%, 4.2-4.5%, the cobalt of the molybdenum of 3.5-3.8%, 0.2-0.3%, the titanium of the manganese of 1.3-1.4%, 0.12-0.15%, the boron of the copper of 0.8-1.0% and aluminium, 0.5-0.6%, 0.003-0.004%, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode;
Carbon, silicon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into after stove heat fused becomes liquid and added copper and aluminium and rare earth again by the amount calculating, and temperature keeps 1-2 hour at 1250-1350 ℃;
Assurance temperature is carried out constant temperature casting at 1000-1050 ℃;
Cooling, carry out stage by stage temperature-reduction at constant speed, first stage be take speed and be warmed up to 850-900 ℃ after the 15-20 ℃/700-750 of cooling to per second ℃, and then cools to 500-530 ℃, be cooled fast to 130-150 ℃ with the 15-20 ℃/subordinate phase of carrying out per second;
Normalizing, carries out quench treatment after being incubated 2-4 hour in 850-900 ℃ of normalizing furnace, quenches and adopts oil to carry out in two stages quench treatment as quenching medium; First stage is within the scope of 230 ± 20 ℃, to carry out in 110-130 ℃ of oil, carrying out after constant temperature is quenched to 450-480 ℃ subordinate phase quench treatment to 130-150 ℃ in oil temperature:
Tempering is incubated 3-5 hour, naturally cooling in 180-200 ℃ of tempering stove.
The weight ratio of described copper and aluminium is 2: 1.
The weight ratio of described niobium and yttrium is 3: 2.
Described tungsten, vanadium, titanium, rare earth are respectively that the rare earth ferroalloy mode that accounts for weight 15% with ferrotungsten, vanadium iron, ferrotianium and rare earth adds.
The invention has the beneficial effects as follows:
By technical scheme of the present invention, guaranteed to be conducive to vanadium, cobalt, the molybdenum element that improves intensity and there is certain toughness and copper and the aluminium that improves toughness carries out the combination of better same tungsten, chromium, titanium elements and reduce and separate out, and by rare earth element increase the combination of each element and increase weave construction in alloy evenly.
Embodiment
By specific embodiment, describe concrete scheme of the present invention in detail below, should be understood that, it is limitation of the present invention that following embodiment only can not be interpreted as for explaining the present invention.
Embodiment 1
Described preparation method is:
Calculating each amount forming prepares burden, 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 aluminium, 0.5% boron, 0.003% the rare earth that contains niobium and yttrium, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode; Wherein the weight ratio of copper and aluminium is 2: 1, and rare earth ferroalloy middle-weight rare earths accounts for 15% of weight, and the weight ratio of niobium and yttrium is 3: 2;
Carbon, silicon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into after stove heat fused becomes liquid and added copper and aluminium and rare earth again by the amount calculating, and temperature keeps 2 hours at 1250-1350 ℃;
Assurance temperature is carried out constant temperature casting at 1000-1050 ℃;
Cooling, carry out stage by stage temperature-reduction at constant speed, first stage be take speed and be warmed up to 850-900 ℃ after the 15-20 ℃/700-750 of cooling to per second ℃, and then cools to 500-530 ℃, be cooled fast to 130-150 ℃ with the 15-20 ℃/subordinate phase of carrying out per second;
Normalizing, carries out quench treatment after being incubated 2-4 hour in 850-900 ℃ of normalizing furnace, quenches and adopts oil to carry out in two stages quench treatment as quenching medium; First stage is within the scope of 230 ± 20 ℃, to carry out after constant temperature is quenched to 450-480 ℃ carrying out subordinate phase quench treatment to 130-150 ℃ in 110-130 ℃ of oil in oil temperature;
Tempering is incubated 3 hours, naturally cooling in 180-200 ℃ of tempering stove.
Embodiment 2
Described preparation method is:
Calculating each amount forming prepares burden, its 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 aluminium, 0.6% boron, 0.004% the rare earth that contains niobium and yttrium, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode;
Carbon, silicon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into after stove heat fused becomes liquid and added copper and aluminium and rare earth again by the amount calculating, and temperature keeps 2 hours at 1250-1350 ℃;
Assurance temperature is carried out constant temperature casting at 1000-1050 ℃;
Cooling, carry out stage by stage temperature-reduction at constant speed, first stage be take speed and be warmed up to 850-900 ℃ after the 15-20 ℃/700-750 of cooling to per second ℃, and then cools to 500-530 ℃, be cooled fast to 130-150 ℃ with the 15-20 ℃/subordinate phase of carrying out per second;
Normalizing, carries out quench treatment after being incubated 3 hours in 850-900 ℃ of normalizing furnace, quenches and adopts oil to carry out in two stages quench treatment as quenching medium; First stage is within the scope of 230 ± 20 ℃, to carry out after constant temperature is quenched to 450-480 ℃ carrying out subordinate phase quench treatment to 130-150 ℃ in 110-130 ℃ of oil in oil temperature;
Tempering is incubated 3 hours, naturally cooling in 180-200 ℃ of tempering stove.
Embodiment 3
Calculating each amount forming prepares burden, 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 aluminium, 0.53% boron, 0.003% the rare earth that contains niobium and yttrium, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth are respectively to prepare burden with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode;
Carbon, silicon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into after stove heat fused becomes liquid and added copper and aluminium and rare earth again by the amount calculating, and temperature keeps 2 hours at 1250-1350 ℃;
Assurance temperature is carried out constant temperature casting at 1000-1050 ℃;
Cooling, carry out stage by stage temperature-reduction at constant speed, first stage be take speed and be warmed up to 850-900 ℃ after the 15-20 ℃/700-750 of cooling to per second ℃, and then cools to 500-530 ℃, be cooled fast to 130-150 ℃ with the 15-20 ℃/subordinate phase of carrying out per second;
Normalizing, carries out quench treatment after being incubated 3 hours in 850-900 ℃ of normalizing furnace, quenches and adopts oil to carry out in two stages quench treatment as quenching medium; First stage is within the scope of 230 ± 20 ℃, to carry out after constant temperature is quenched to 450-480 ℃ carrying out subordinate phase quench treatment to 130-150 ℃ in 110-130 ℃ of oil in oil temperature;
Tempering is incubated 3 hours, naturally cooling in 180-200 ℃ of tempering stove.
Claims (4)
1. a saw blade tool steel material preparation method, it is characterized in that: calculate each amount forming and prepare burden, its composition is by weight percentage, the carbon of 1.8-2.0%, the silicon of 0.35-0.5%, the chromium of 4.2-4.3%, the tungsten of 8.2-8.3%, the vanadium of 4.2-4.5%, the molybdenum of 3.5-3.8%, the cobalt of 0.2-0.3%, the manganese of 1.3-1.4%, the titanium of 0.12-0.15%, the copper of 0.8-1.0% and aluminium, the boron of 0.5-0.6%, the rare earth that contains niobium and yttrium of 0.003-0.004%, surplus is iron, wherein, tungsten, vanadium, titanium, rare earth is respectively with ferrotungsten, vanadium iron, ferrotianium and rare earth ferroalloy mode are prepared burden,
Carbon, silicon, iron, chromium, ferrotungsten, vanadium iron, ferrotianium, molybdenum, cobalt, manganese are put into after stove heat fused becomes liquid and added copper and aluminium and rare earth again by the amount calculating, and temperature keeps 1-2 hour at 1250-1350 ℃;
Assurance temperature is carried out constant temperature casting at 1000-1050 ℃;
Cooling, carry out stage by stage temperature-reduction at constant speed, first stage be take speed and be warmed up to 850-900 ℃ after the 15-20 ℃/700-750 of cooling to per second ℃, and then cools to 500-530 ℃, be cooled fast to 130-150 ℃ with the 15-20 ℃/subordinate phase of carrying out per second;
Normalizing, carries out quench treatment after being incubated 2-4 hour in 850-900 ℃ of normalizing furnace, quenches and adopts oil to carry out in two stages quench treatment as quenching medium; First stage is within the scope of 230 ± 20 ℃, to carry out after constant temperature is quenched to 450-480 ℃ carrying out subordinate phase quench treatment to 130-150 ℃ in 110-130 ℃ of oil in oil temperature;
Tempering is incubated 3-5 hour, naturally cooling in 180-200 ℃ of tempering stove.
2. saw blade according to claim 1 tool steel material preparation method, is characterized in that: the weight ratio of described copper and aluminium is 2: 1.
3. saw blade according to claim 1 tool steel material preparation method, is characterized in that: the weight ratio of described niobium and yttrium is 3: 2.
4. saw blade according to claim 1 tool steel material preparation method, is characterized in that: described tungsten, vanadium, titanium, rare earth are respectively that the rare earth ferroalloy mode that accounts for weight 15% with ferrotungsten, vanadium iron, ferrotianium and rare earth adds.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313508A (en) * | 2014-10-20 | 2015-01-28 | 郭芙 | Alloy with high surface heat resistance and preparation method thereof |
| CN109623306A (en) * | 2019-01-17 | 2019-04-16 | 安徽屹盛机电科技有限公司 | A kind of lawn rounding machine cutter production technology |
| CN109988977A (en) * | 2019-01-18 | 2019-07-09 | 安徽屹盛机电科技有限公司 | A kind of hedgerow rounding machine cutter production technology |
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| JP2008214722A (en) * | 2007-03-07 | 2008-09-18 | Sanyo Special Steel Co Ltd | Steel having high wear-resistance and high toughness for high-speed tool and manufacturing method therefor |
| CN102994893A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Power metallurgy tool steel |
| CN102994894A (en) * | 2012-11-22 | 2013-03-27 | 浙江明磊工具实业有限公司 | Method for producing alloy steel material for drill bit |
| CN103572168A (en) * | 2013-10-21 | 2014-02-12 | 虞伟财 | Tool steel material for saw blades and preparation method thereof |
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2013
- 2013-10-21 CN CN201310497603.2A patent/CN103572167A/en active Pending
Patent Citations (5)
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| JPH01152242A (en) * | 1987-12-10 | 1989-06-14 | Sanyo Special Steel Co Ltd | High-toughness and high-speed steel by powder metallurgy |
| JP2008214722A (en) * | 2007-03-07 | 2008-09-18 | Sanyo Special Steel Co Ltd | Steel having high wear-resistance and high toughness for high-speed tool and manufacturing method therefor |
| CN102994893A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Power metallurgy tool steel |
| CN102994894A (en) * | 2012-11-22 | 2013-03-27 | 浙江明磊工具实业有限公司 | Method for producing alloy steel material for drill bit |
| CN103572168A (en) * | 2013-10-21 | 2014-02-12 | 虞伟财 | Tool steel material for saw blades and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313508A (en) * | 2014-10-20 | 2015-01-28 | 郭芙 | Alloy with high surface heat resistance and preparation method thereof |
| CN109623306A (en) * | 2019-01-17 | 2019-04-16 | 安徽屹盛机电科技有限公司 | A kind of lawn rounding machine cutter production technology |
| CN109988977A (en) * | 2019-01-18 | 2019-07-09 | 安徽屹盛机电科技有限公司 | A kind of hedgerow rounding machine cutter production technology |
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Application publication date: 20140212 |