Tool steel material for blade and preparation method thereof

A tool steel and blade technology, applied in the field of tool steel materials for blades and its preparation, can solve problems such as unsatisfactory friction resistance, and achieve the effects of improving hydrogen corrosion resistance, high hardness, strong friction resistance and corrosion resistance

Active Publication Date: 2018-01-02
宁波林佳塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in actual use, the blades of the hedge trimmer need to cut the bushes frequently
In the cutting process, the blade of the hedge trimmer needs to rub against the bushes frequently, so there is a high requirement for the friction resistance of the hedge trimmer, and the tool steel material used for the hedge trimmer blade cannot meet the requirements for the friction resistance. Room for improvement

Method used

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  • Tool steel material for blade and preparation method thereof
  • Tool steel material for blade and preparation method thereof
  • Tool steel material for blade and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step1: According to parts by weight, weigh out 83.07 parts of iron, 1.5 parts of carbon, 0.25 parts of silicon, 1.5 parts of manganese, 7.4 parts of chromium, 0.35 parts of nickel, 0.2 parts of molybdenum, 0.1 parts of titanium, 0.02 parts Of vanadium, 4.4 parts of tungsten, 0.8 parts of aluminum, 0.06 parts of rare earth elements, 0.05 parts of niobium;

[0041] Step2: Add each component to a roller ball mill, and perform mixing ball milling for 70h at a ball-to-material weight ratio of 8:1 and a speed of 20rad / min to prepare a powder mixture;

[0042] Step3: The powder mixture is made into compacts by cold isostatic pressing, the cold isostatic pressing pressure is 150MPa, and the holding time is 1 min;

[0043] Step4: Use hot-press sintering technology to sinter the above-mentioned compact under argon gas, and obtain the tool steel body for blade after cooling. During sintering, the compact is heated to 1250°C and kept for 90 minutes, and the sintering pressure is 40MPa;

[...

Embodiment 2

[0050] Step1: According to parts by weight, weigh 82.878 parts of iron, 1.2 parts of carbon, 0.26 parts of silicon, 1.6 parts of manganese, 7.6 parts of chromium, 0.4 parts of nickel, 0.25 parts of molybdenum, 0.11 parts of titanium, and 0.03 parts Of vanadium, 4.3 parts of tungsten, 0.85 parts of aluminum, 0.062 parts of rare earth elements, 0.06 parts of niobium;

[0051] Step2: Add each component to a roller ball mill, and carry out a 75h mixing ball mill with a ball-to-material weight ratio of 9:1 and a speed of 25rad / min to prepare a powder mixture;

[0052] Step3: The powder mixture is made into compacts by cold isostatic pressing, the cold isostatic pressing pressure is 200MPa, and the holding time is 3min;

[0053] Step4: Adopt hot-press sintering technology to sinter the above-mentioned compact under argon gas, and obtain the tool steel blank for blade after cooling. During sintering, the compact is heated to 1200℃ and kept for 70min, and the sintering pressure is 10MPa;

[0...

Embodiment 3

[0060] Step1: According to parts by weight, weigh 82.276 parts of iron, 1 part of carbon, 0.27 parts of silicon, 1.7 parts of manganese, 7.5 parts of chromium, 0.45 parts of nickel, 0.3 parts of molybdenum, 0.12 parts of titanium, and 0.05 parts Of vanadium, 4.7 parts of tungsten, 0.9 parts of aluminum, 0.064 parts of rare earth elements, 0.07 parts of niobium;

[0061] Step2: Add each component to a roller ball mill, and perform a mixing ball mill for 80 hours at a weight ratio of ball to material of 10:1 and a speed of 30rad / min to prepare a powder mixture;

[0062] Step3: The powder mixture is made into compacts by cold isostatic pressing, the cold isostatic pressing pressure is 250MPa, and the holding time is 5min;

[0063] Step4: Use hot pressing sintering technology to sinter the above-mentioned compact under argon gas, and obtain the tool steel blank for blade after cooling. During sintering, the compact is heated to 1150℃ and kept for 50min, and the sintering pressure is 20MP...

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Abstract

The invention discloses a tool steel material for a blade. The tool steel material comprises, by weight, 80.89-83.92 parts of iron, 0.75-1.5 parts of carbon, 0.25-0.3 part of silicon, 1.5-1.8 parts of manganese, 7.4-7.8 parts of chromium, 0.35-0.5 part of nickel, 0.2-0.35 part of molybdenum, 0.1-0.15 part of titanium, 0.02-0.05 part of vanadium, 4.3-4.7 parts of tungsten and 0.8-1.0 part of aluminum. The tool steel material has the beneficial effects that optimization design is conducted on the kinds and the usage amount of alloy elements, on one hand, the alloy elements can interact with one another, the respective excellent performance is brought into play, on the other hand, the multiple alloy elements can complement one another, adverse influences of single alloys on performance are offset, and therefore the tool steel material for the blade is high in hardness, and high in friction resistance and corrosion resistance.

Description

Technical field [0001] The invention relates to the field of tool steel materials, in particular to a tool steel material for blades and a preparation method thereof. Background technique [0002] The Chinese patent with publication number CN103131957A discloses a tool steel material for hedge trimmer blades and a preparation method thereof. The elements of vanadium, cobalt and molybdenum can increase strength and have certain toughness, and copper and aluminum can increase toughness. The tool steel material reduces precipitation by enhancing the combination of vanadium, cobalt, molybdenum and copper and aluminum with tungsten, chromium, and titanium elements, and increases the combination of various elements and increases the uniformity of the structure in the alloy through rare earth elements. [0003] However, in actual use, the blade of the hedge trimmer needs to cut bushes frequently. In the cutting process, the blades of the hedge trimmer need to be rubbed against the bushe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/58C22C38/44C22C38/50C22C38/46C22C38/06C22C38/04C22C38/02C22C38/48C22C33/02C21D1/18C23C8/26
CPCC21D1/18C22C33/0285C22C38/001C22C38/005C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48C22C38/50C22C38/58C23C8/26
Inventor 周辉
Owner 宁波林佳塑业有限公司
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