Fe/Ni-based carbide alloy coating cutter material for cutting rolled steel and preparation thereof

A technology of cemented carbide and cemented carbide substrate, which is applied in the direction of cutting tools for lathes, metal material coating technology, coating, etc., can solve problems such as limitations, and achieve the effect of reducing thermal stress, fine structure, and good plasticity

Inactive Publication Date: 2008-11-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although a lot of research has been done on Fe and Ni-substituted Co cemented carbides in recent years, Fe/Ni-substituted Co cemented carbides are mainly used in wear-resistant parts, mining tools and other fields or other less demanding occasions. appl

Method used

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  • Fe/Ni-based carbide alloy coating cutter material for cutting rolled steel and preparation thereof
  • Fe/Ni-based carbide alloy coating cutter material for cutting rolled steel and preparation thereof
  • Fe/Ni-based carbide alloy coating cutter material for cutting rolled steel and preparation thereof

Examples

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example 1

[0032] Example 1: batching according to the following scheme: 2.15 μm carbonyl Fe powder accounts for 6.9wt%; 2.45 μm carbonyl Ni powder accounts for wt2.3%; 2.25 μm WC: TiC=50: 50 (Ti, W) C solid solution accounts for 12.4%, the rest for WC. Mix accurately weighed various carbides and metal powders, and grind them in a drum-type wet mill. The wet grinding medium is absolute ethanol, and the grinding balls are WC-8wt% Co cemented carbide balls; the grinding speed is 56r / min , the grinding time is 48h, the diameter of the grinding ball is 10mm, and the ratio of ball to material is 5:1. After wet grinding, after precipitation and drying, 12wt% SD rubber molding agent is added. The addition amount of forming agent is 80ml / Kg, and it is pressed into TNMG160408 blade after sieving, and the pressing pressure is 300-400MPa. Sintering in a vacuum sintering furnace, degumming is carried out at a vacuum degree higher than 10-15Pa, and kept at 400°C-500°C for 2-4h; the sintering vacuum ...

example 2

[0034] Example 2: batching according to the following scheme: 2.15 μm carbonyl Fe powder accounts for 4.5wt%; 2.45 μm carbonyl Ni powder accounts for wt1.5%; 2.25 μm WC: TiC=50: 50 (Ti, W) C solid solution accounts for 30%, the rest for WC. Mix accurately weighed various carbides and metal powders, and grind them in a drum-type wet mill. The wet grinding medium is absolute ethanol, and the grinding balls are WC-8wt% Co cemented carbide balls; the grinding speed is 56r / min , the grinding time is 48h, the diameter of the grinding ball is 10mm, and the ratio of ball to material is 5:1. After wet grinding, after precipitation and drying, 12wt% SD rubber molding agent is added. The addition amount of forming agent is 80ml / Kg, and it is pressed into TNMG160408 blade after sieving, and the pressing pressure is 300-400MPa. Sintering in a vacuum sintering furnace, degumming is carried out at a vacuum degree higher than 10-15Pa, and kept at 400°C-500°C for 2-4h; the sintering vacuum de...

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Abstract

The invention relates to a blade used for cutting processing of steels and a preparation method thereof. The blade comprises a hard alloy substrate which takes Fe and Ni as binding phase and a wearable coating. The binding phase in the hard alloy substrate occupies the proportion of 6 to 10 percent, wherein, the proportion of Fe to Ni is 3 : 1; the hard alloy substrate is all carbonyl powder; the coating is prepared by adopting a chemical vapour deposition technique; from a layer adjacent to the substrate to the most external layer, the coating materials sequentially comprises TiN (0.5-1 Mu meters), Ti(C, N) (5-8 Mu meters), Al2O3 (3-5Mu meters) and TiN (1-2Mu meters). After being coated, the blade coating and the substrate have high binding strength, good wearability, can be used for the rough turning processing of the carbon structural steels and alloy steels, and have an equivalent service life with P30 alloy.

Description

technical field [0001] The invention relates to a coated hard alloy insert for steel cutting and a preparation method thereof, in particular to a coated carbide insert with Fe / Ni bonding as a matrix coating insert and a preparation method thereof. Background technique [0002] Cemented carbide with WC, TiC, and TaC as the main hard phase and Co as the binder phase has been the most important material for cutting since its invention in 1923. However, the binder phase Co in cemented carbide is a scarce strategic resource. The world's Co reserves are 4.5 million tons, and the distribution is mainly concentrated in Zaire and Zambia, where the political situation is turbulent (the Co production of the two countries accounts for 63% of the world's total. ) and Russia. my country lacks Co resources, and the proven Co reserves are 563,000 tons. my country is currently the world's largest producer and consumer of cemented carbide, accounting for 1 / 3 of the world's total, and its an...

Claims

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Application Information

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IPC IPC(8): B23B27/14C22C29/08C23C16/30C23C16/52B23P15/30
Inventor 熊计郭智兴毕泗庆陈建中
Owner SICHUAN UNIV
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