CN107639230B - A kind of grinding tool alloy composite materials preparation process - Google Patents
A kind of grinding tool alloy composite materials preparation process Download PDFInfo
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- CN107639230B CN107639230B CN201710726919.2A CN201710726919A CN107639230B CN 107639230 B CN107639230 B CN 107639230B CN 201710726919 A CN201710726919 A CN 201710726919A CN 107639230 B CN107639230 B CN 107639230B
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Abstract
The invention discloses a kind of grinding tool alloy composite materials preparation processes, comprising the following steps: raw material is divided into abrasion resistant particles raw material, alloy powder raw material and nanometer powder raw material first；It is placed on abrasion resistant particles raw material is evenly laid out in molding die, the weight change by measuring molding die position monitors whether the abrasion resistant particles raw material is uniformly dispersed；Then alloy powder raw material and nanometer powder raw material are repeated in aforesaid operations；Molding die is steadily delivered in vacuum calcining furnace, vacuum calcining furnace is slowly heated after vacuumizing, after being warming up to target temperature, a period of time is maintained to be sintered, alloy composite materials is made；Then then slow cooling opens vacuum calcining furnace and takes out alloy composite materials natural cooling until being filled with air into vacuum calcining furnace when the temperature in vacuum calcining furnace is lower than 60 DEG C and restoring normal pressure.The present invention can make raw material be more fully mixed, each component is made to be evenly distributed, so that raising prepares the qualification rate of product.
Description
Technical field
The present invention relates to a kind of diamond abrasive tool material preparation process technical field, especially a kind of grinding tool alloy is compound
Material preparation process.
Background technique
Diamond and alloy composite abrasive material are widely used in the metal-processing industries such as machine-building, and ceramics, glass
The processing industry of the nonmetallic materials such as glass, stone material, diamond and alloy composite abrasive material are mainly for the manufacture of equipment for grinding
Grinding tool.A kind of artificial grinding tool of grinding tool made of diamond and alloy composite abrasive material adds bonding agent with abrasive diamond
High-strength alloy and be made, diamond can be in grinding tool to be uniformly distributed in grinding tool entirety, is also possible to inlay and is mounted on
The key operation position of grinding tool.
The preparation method of diamond and alloy composite abrasive material mainly has melting and two kinds of powder smelting: smelting technology
Temperature is higher, therefore all higher for requirements such as the temperature tolerances of the vacuum-tightness of equipment, container, and diamond uniform is distributed in
Grinding tool in alloy substrate is generally difficult to be prepared using the technique of melting.The temperature of powder smelting technique is relatively low, right
It is below smelting technology in the requirements such as temperature tolerance of the vacuum-tightness of equipment, container, and diamond uniform distribution can be prepared
Grinding tool in alloy substrate.But during preparing diamond and alloy composite abrasive material using powder smelting technique,
It is easy the case where being unevenly distributed there are raw material undercompounding, each component, the product qualification rate so as to cause preparation is lower
The problem of.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of grinding tool alloy composite materials preparation process, energy
Raw material is enough set to be more fully mixed, each component is made to be evenly distributed, so that raising prepares the qualification rate of product.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of grinding tool alloy composite materials preparation process, comprising the following steps:
Step 1: being divided into abrasion resistant particles raw material, alloy powder raw material and nanometer powder raw material for raw material first, then will belong to
It is uniformly mixed in the various components of the abrasion resistant particles raw material, the various components for belonging to the alloy powder raw material is uniformly mixed
It closes, the various components for belonging to the nanometer powder raw material is uniformly mixed；
Step 2: being placed on the mixed abrasion resistant particles raw material is evenly laid out in molding die, by measurement at
The weight change of pattern tool position monitors whether the abrasion resistant particles raw material is uniformly dispersed；Then by the mixed conjunction
The uniform spreading of bronze powder stock is placed in molding die, and monitors institute by the weight change of measurement molding die position
State whether alloy powder raw material is uniformly dispersed；Then the mixed uniform spreading of nanometer powder raw material is placed on shaping mould
In tool, and monitor whether the nanometer powder raw material is uniformly dispersed by the weight change of measurement molding die position；
Step 3: molding die being steadily delivered in vacuum calcining furnace, containing vacuum calcining furnace, slow to vacuum calcining furnace
Slowly vacuumize, air-flow when avoiding vacuumizing causes the powder in molding die to wave, while ensure the abrasion resistant particles raw material,
Air in the alloy powder raw material and nanometer powder raw material gap is sufficiently discharged and is pumped；
Step 4: slow heating vacuum calcining furnace makes each position and each component all thermally equivalents and temperature in molding die
Unanimously, steep temperature rise is avoided to cause to generate the biggish temperature difference in molding die between each position and each component；Make vacuum calcining furnace
After being warming up to target temperature, a period of time is maintained to be sintered, alloy composite materials are made；
Step 5: slow cooling is carried out to vacuum calcining furnace after the completion of sintering, makes to have between each position of alloy composite materials
The sufficient time carries out the conduction of heat, avoids each position cooling velocity of alloy composite materials inconsistent, until vacuum calcining furnace
When interior temperature is lower than 60 DEG C, it is filled with air into vacuum calcining furnace and restores normal pressure, then opens vacuum calcining furnace and take out alloy
Composite material natural cooling.
As a further improvement of the above technical scheme, in step 1: the abrasion resistant particles raw material be diamond or
The mixture of cubic boron nitride or diamond and cubic boron nitride, and the partial size of the abrasion resistant particles raw material is 40~70 mesh；
The alloy powder raw material is the mixture of metal powder mixture or metal powder and non-metal powder, and the alloy
The partial size of powder raw material is 1~150 micron；The nanometer powder raw material is metal powder mixture or metal powder and non-
The mixture of metal powder, and the partial size of the nanometer powder raw material is 1~100 nanometer.
As a further improvement of the above technical scheme, in step 2: the spreading thickness etc. of the alloy powder raw material
In the maximum particle diameter of the abrasion resistant particles raw material；The spreading total volume of the nanometer powder raw material is equal to the abrasion resistant particles raw material
With the accumulation gap total volume of the alloy powder raw material.
As a further improvement of the above technical scheme, in step 3, the vacuum degree needs of vacuum calcining furnace reach and tie up
It holds in 0.1 Pa or less；In step 4, vacuum calcining furnace is warming up to 750 with 10~40 DEG C of rate per minute by vacuum calcining furnace
~1250 DEG C；In step 5, vacuum calcining furnace is cooled down with 5~20 DEG C of rate per minute.
Compared with prior art, the beneficial effects of the present invention are:
A kind of grinding tool alloy composite materials preparation process provided by the present invention, by amplifying partial size according to first heap
Grain, the rear rule for stacking small particle powder, are finely controlled the mixing order of various raw materials, and raw material mixing can be made more to fill
Divide, each component is made to be evenly distributed；And by control sintering heating rate, each position of alloy composite materials is avoided to generate the temperature difference, respectively
The volume change at position is inconsistent, and causes alloy composite materials interior porosity excessive or generate internal flaw；Pass through control
It is sintered cooling velocity, alloy composite materials is avoided to generate internal stress, causes alloy composite materials to generate internal clearance and even leads
Cause alloy composite materials fragmentation；To improve the qualification rate for preparing product.
Specific embodiment
Carry out the technology contents that present invention be described in more detail below in conjunction with specific embodiments.
A kind of grinding tool alloy composite materials preparation process provided by the present embodiment, comprising the following steps:
Step 1: being divided into abrasion resistant particles raw material, alloy powder raw material and nanometer powder raw material for raw material first, then will belong to
It is uniformly mixed in the various components of the abrasion resistant particles raw material, the various components for belonging to the alloy powder raw material is uniformly mixed
It closes, the various components for belonging to the nanometer powder raw material is uniformly mixed.
Specifically, the abrasion resistant particles raw material is diamond or cubic boron nitride or diamond and cubic boron nitride
Mixture, and the partial size of the abrasion resistant particles raw material be 40~70 mesh；The alloy powder raw material be metal powder mixture,
Or the mixture of metal powder and non-metal powder, and the partial size of the alloy powder raw material is 1~150 micron；It is described to receive
Rice flour powder stock is the mixture of metal powder mixture or metal powder and non-metal powder, and the nanometer powder is former
The partial size of material is 1~100 nanometer.
Step 2: being placed on the mixed abrasion resistant particles raw material is evenly laid out in molding die, by measurement at
The weight change of pattern tool position monitors whether the abrasion resistant particles raw material is uniformly dispersed；Then by the mixed conjunction
The uniform spreading of bronze powder stock is placed in molding die, and monitors institute by the weight change of measurement molding die position
State whether alloy powder raw material is uniformly dispersed；Then the mixed uniform spreading of nanometer powder raw material is placed on shaping mould
In tool, and monitor whether the nanometer powder raw material is uniformly dispersed by the weight change of measurement molding die position.
Specifically, the spreading thickness of the alloy powder raw material is equal to the maximum particle diameter of the abrasion resistant particles raw material；It is described
The spreading total volume of nanometer powder raw material is equal to the abrasion resistant particles raw material and the accumulation gap of the alloy powder raw material is overall
Product.The accumulation gap total volume of the abrasion resistant particles raw material and the alloy powder raw material can be surveyed by way of filling liquid
Amount, without measuring the sample in each molding die, it is only necessary to measure it is multiple after be averaged.
The weight change of molding die position can be detected by multiple gravity sensors that matrix arrangement is arranged,
By the induction end of multiple gravity sensors matrix arrangement upward, then molding die is lain in multiple gravity-feed tanks of matrix arrangement
It answers on device, the weight change of molding die position can be detected by multiple gravity sensors.
Step 3: molding die being steadily delivered in vacuum calcining furnace, containing vacuum calcining furnace, slow to vacuum calcining furnace
Slowly vacuumize, air-flow when avoiding vacuumizing causes the powder in molding die to wave, while ensure the abrasion resistant particles raw material,
Air in the alloy powder raw material and nanometer powder raw material gap is sufficiently discharged and is pumped.Specifically, vacuum is forged
The vacuum degree needs for burning furnace reach and maintain 0.1 Pa or less.
Step 4: slow heating vacuum calcining furnace makes each position and each component all thermally equivalents and temperature in molding die
Unanimously, steep temperature rise is avoided to cause to generate the biggish temperature difference in molding die between each position and each component；Make vacuum calcining furnace
After being warming up to target temperature, a period of time is maintained to be sintered, alloy composite materials are made.Specifically, vacuum calcining furnace is with every
Vacuum calcining furnace is warming up to 750~1250 DEG C by the rate of 10~40 DEG C of minute.
Step 5: slow cooling is carried out to vacuum calcining furnace after the completion of sintering, makes to have between each position of alloy composite materials
The sufficient time carries out the conduction of heat, avoids each position cooling velocity of alloy composite materials inconsistent, until vacuum calcining furnace
When interior temperature is lower than 60 DEG C, it is filled with air into vacuum calcining furnace and restores normal pressure, then opens vacuum calcining furnace and take out alloy
Composite material natural cooling.Specifically, vacuum calcining furnace is cooled down with 5~20 DEG C of rate per minute.
Preferable implementation of the invention is illustrated above, certainly, the present invention can also use and above-mentioned implementation
The different form of mode, those skilled in the art's made equivalent transformation on the premise of without prejudice to spirit of the invention
Or corresponding change, all it should belong in protection scope of the present invention.
Claims (2)
1. a kind of grinding tool alloy composite materials preparation process, it is characterised in that: the following steps are included:
Step 1: raw material is divided into abrasion resistant particles raw material, alloy powder raw material and nanometer powder raw material first, then will belong to institute
The various components for stating abrasion resistant particles raw material uniformly mix, and the various components for belonging to the alloy powder raw material are uniformly mixed, will
The various components for belonging to the nanometer powder raw material uniformly mix；The abrasion resistant particles raw material is diamond or cube nitridation
The mixture of boron or diamond and cubic boron nitride, and the partial size of the abrasion resistant particles raw material is 40~70 mesh；The alloy
Powder raw material is the mixture of metal powder mixture or metal powder and non-metal powder, and the alloy powder raw material
Partial size be 1~150 micron；The nanometer powder raw material is metal powder mixture or metal powder and non-metal powder
Mixture, and the partial size of the nanometer powder raw material be 1~100 nanometer；
Step 2: being placed on the mixed abrasion resistant particles raw material is evenly laid out in molding die, passes through measurement shaping mould
The weight change of tool position monitors whether the abrasion resistant particles raw material is uniformly dispersed；Then by the mixed alloyed powder
The uniform spreading of powder stock is placed in molding die, and monitors the conjunction by the weight change of measurement molding die position
Whether bronze powder stock is uniformly dispersed；Then the mixed uniform spreading of nanometer powder raw material is placed on molding die
In, and monitor whether the nanometer powder raw material is uniformly dispersed by the weight change of measurement molding die position；It is described
The spreading thickness of alloy powder raw material is equal to the maximum particle diameter of the abrasion resistant particles raw material；The spreading of the nanometer powder raw material is total
Volume is equal to the accumulation gap total volume of the abrasion resistant particles raw material and the alloy powder raw material；
Step 3: molding die is steadily delivered in vacuum calcining furnace, and containing vacuum calcining furnace slowly takes out vacuum calcining furnace
Vacuum, air-flow when avoiding vacuumizing cause the powder in molding die to wave, while ensuring the abrasion resistant particles raw material, described
Air in alloy powder raw material and nanometer powder raw material gap is sufficiently discharged and is pumped；
Step 4: slow heating vacuum calcining furnace keeps each position in molding die consistent with each component all thermally equivalents and temperature,
Steep temperature rise is avoided to cause to generate the biggish temperature difference in molding die between each position and each component；It is warming up to vacuum calcining furnace
After target temperature, a period of time is maintained to be sintered, alloy composite materials are made；
Step 5: carrying out slow cooling to vacuum calcining furnace after the completion of sintering, makes to have between each position of alloy composite materials sufficiently
Time carry out heat conduction, avoid each position cooling velocity of alloy composite materials inconsistent, until vacuum calcining furnace in
When temperature is lower than 60 DEG C, it is filled with air into vacuum calcining furnace and restores normal pressure, it is compound then to open vacuum calcining furnace taking-up alloy
Material natural cooling.
2. a kind of grinding tool alloy composite materials preparation process according to claim 1, it is characterised in that: in step 3,
The vacuum degree needs of vacuum calcining furnace reach and maintain 0.1 Pa or less；In step 4, vacuum calcining furnace with per minute 10~
Vacuum calcining furnace is warming up to 750~1250 DEG C by 40 DEG C of rate；In step 5, vacuum calcining furnace is with 5~20 DEG C per minute
Rate cools down.
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|---|---|---|---|
| CN201710726919.2A CN107639230B (en) | 2017-08-23 | 2017-08-23 | A kind of grinding tool alloy composite materials preparation process |
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|---|---|---|---|
| CN201710726919.2A CN107639230B (en) | 2017-08-23 | 2017-08-23 | A kind of grinding tool alloy composite materials preparation process |
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| CN107639230A CN107639230A (en) | 2018-01-30 |
| CN107639230B true CN107639230B (en) | 2019-07-05 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6123705A (en) * | 1984-07-10 | 1986-02-01 | Tatsuro Kuratomi | Diamond tool material and its production |
| CN1060417C (en) * | 1995-05-31 | 2001-01-10 | 长春地质学院 | Composite material containing diamond |
| CN103331442B (en) * | 2013-07-16 | 2015-11-18 | 中南钻石有限公司 | The preparation method of a kind of nano junction mixture, the diamond composite cutter bit be made up of this bonding agent and composite cutter bit |
| CN104084590B (en) * | 2014-06-26 | 2016-06-08 | 中南钻石有限公司 | A kind of use nano metal bonding agent to make oil drilling diamond compact and its preparation method |
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