CN109702232A - A kind of hard alloy overlength alloy knife and preparation method thereof - Google Patents
A kind of hard alloy overlength alloy knife and preparation method thereof Download PDFInfo
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- CN109702232A CN109702232A CN201811652788.9A CN201811652788A CN109702232A CN 109702232 A CN109702232 A CN 109702232A CN 201811652788 A CN201811652788 A CN 201811652788A CN 109702232 A CN109702232 A CN 109702232A
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Abstract
The invention discloses a kind of hard alloy overlength alloy knifes, including blade, the blade bottom is fixedly connected with cutter head and preparation method thereof, blade front two sides offer outer fixation hole and interior fixation hole close to the symmetric position of outer wall, the outer fixed hole position is in interior fixation hole close to the side of blade outer wall, the outer fixation hole and interior fixation hole are respectively positioned on above cutter head, the cutter head includes main body, the main body front and back is provided with blade surface, the main body is provided with cutting edge far from the side of blade, the preparation method is by forming agent proportion design, green compact fills boat device, boat problem can not be filled by overcoming overlength hard alloy green compact traditional handicraft, the present invention relates to hard alloy overlength alloy knife processing technique fields.The device makes hard alloy overlength alloy knife one-pass molding, avoid domestic hard alloy overlength alloy knife user by plug into and cause interface position processing and using when there is notch or phenomenon of rupture, and caused economic loss, it fills the domestic gaps, instead of imported product, cost performance is high, low in cost.
Description
Technical field
The present invention relates to hard alloy overlength alloy knife processing technique field, specially a kind of hard alloy overlength alloy knife
And preparation method thereof.
Background technique
China's hard alloy integral level lags behind foreign countries, the performance of especially high attached value product is more external still have it is larger
Gap, main cause letter includes technical level and the aspect of technological level two, currently, China's high value added product length is more than
The hard alloy overlength alloy knife of 1800mm largely relies on import, and domestic factory director's production length is more than 1800mm carbide cutter tool
Could be completed by plugging into, usually processing and using when interface occur breach first, the invention enables length to be more than
The hard alloy overlength alloy knife of 1800mm need not plug into, one-pass molding, avoid interface position and occur in processing and use
Breach phenomenon and caused economic loss, fill the domestic gaps, and instead of imported product, cost performance is high, low in cost.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of hard alloy overlength alloy knife and preparation method thereof, solutions
Domestic factory director's production length of having determined is more than that 1800mm carbide cutter tool will could be completed by plugging into, usually in processing and use
There is the problem of breach first in interface.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of hard alloy overlength alloy knife,
Including blade, the blade bottom is fixedly connected with cutter head, and blade front two sides are opened up close to the symmetric position of outer wall
There are outer fixation hole and interior fixation hole, the outer fixed hole position is in interior fixation hole close to the side of blade outer wall, the outer fixation hole
It is respectively positioned on above cutter head with interior fixation hole；
The cutter head includes main body, and the main body front and back is provided with blade surface, the main body far from blade one
Side is provided with cutting edge.
A kind of preparation method of hard alloy overlength alloy knife, includes the following steps,
Step 1, the preparation of hard alloy overlength alloy knife raw material；
Step 2, hard alloy overlength alloy knife compression moulding；
Step 3, hard alloy overlength alloy knife green compact fill boat and its device；
Step 4, the sintering of hard alloy overlength alloy knife；
Step 5, the roughing of hard alloy overlength alloy knife；
Step 6, the heat treatment of hard alloy overlength alloy knife；
Step 7, the finishing of hard alloy overlength alloy knife.
Preferably, the step 1 is by cemented carbide material: tungsten carbide 83~92%, cobalt 5~12%, tungsten carbide-carbonization
Magnesium-titanium solid solution 3~5% passes through ingredient, and mixed grinding is carried out in hexanes trituration medium, adds the slurry of paraffin, then dry through vacuum
Rubber and wax moulding agent is added in dry, sieving, in proportion 60:40, and mixture is made in drying.
Preferably, mixture is uniformly charged in die cavity by the step 2, is suppressed, is pressed by special equipment precision
High density green compact is placed on smooth graphite plate.
Preferably, the green compact on graphite plate is packed into vacuum drying oven drying 20-36 hours by the step 3, so that green compact
Toughness and hardness are moderate, and then dry green compact is fitted into graphite boat with green compact dress boat device, is not easily broken, improves when filling boat
Product qualification rate.
Preferably, hard alloy overlength alloy knife is made through vacuum dewaxing and sintering or low pressure sintering in the step 4 green compact
Semi-finished product.Green compact heats up in sintering temperature and is segmented heat preservation, soaking time: 600 DEG C -800 DEG C heat up 2 hours, keep the temperature 2 hours.
800 DEG C -1000 DEG C heat up 2.5 hours, keep the temperature 2 hours.1000 DEG C -1200 DEG C heat up 3 hours, keep the temperature 2 hours.1200℃-
1400 DEG C heat up 3 hours, keep the temperature 3 hours.When cooling, in -1300 DEG C of coolings 2 hours of 1400 DEG C of temperature, 1300 DEG C -1200 DEG C cold
But 2.5 hours, 1200 DEG C -1100 DEG C of coolings 3 hours, 1100 DEG C -1000 DEG C of coolings 3.5 hours, 1000 DEG C of -900 DEG C of coolings 4 are small
When, 900 DEG C -800 DEG C of coolings 5 hours, 800 DEG C or less cooled to room temperatures.
Preferably, rough forging is fixed on numerical control machining center by the step 5, first carries out smooth surface to blank top, with
A side to overturn of smooth surface is retightened in numerical control machining center afterwards, and processes hard alloy overlength by benchmark face of bottom smooth surface
Alloy knife, and reaming, fixed hole diameter 5mm are carried out to fixation hole.
Preferably, the hard alloy overlength alloy knife after roughing in step 5 is put into batch-type furnace by the step 6
800 DEG C are warming up to, heating rate is 15 DEG C/min, keeps the temperature 100 minutes after being warming up to 800 DEG C, cools to 500 after heat preservation with the furnace
DEG C, it then comes out of the stove air-cooled.
Preferably, the step 6 is added industrial sodium nitrite and in nitrate furnace with the heating of the heating rate of 3 DEG C/min
To 1060~1070 DEG C, by treated, hard alloy overlength alloy knife is put into nitrate furnace, with identical heating speed in nitrate furnace
Rate continues to be heated to 1060~1070 DEG C, and keeps the temperature 15~20 minutes.
Preferably, by treated, hard alloy overlength alloy knife takes out the step 6, is put into quenching oil quenching,
Residence time in quenching oil is 10~15 minutes, and quenched hard alloy overlength alloy knife is put into nitrate furnace and is tempered,
Then air-cooled.
Preferably, the abrasive in the step 7 is made of green silicon carbide powder, kerosene and machine oil, the step 7 with
Abrasive grinding processing method is processed, and carries out grinding using diamond-impregnated wheel.
(3) beneficial effect
The present invention provides a kind of hard alloy overlength alloy knife and preparation method thereof, have it is following the utility model has the advantages that
The present invention is fixedly connected with cutter head by blade bottom, and blade front two sides are opened close to the symmetric position of outer wall
Equipped with outer fixation hole and interior fixation hole, outer fixed hole position in interior fixation hole close to the side of blade outer wall, outer fixation hole and interior solid
Determine hole to be respectively positioned on above cutter head, cutter head includes main body, and main body front and back is provided with blade surface, side of the main body far from blade
Be provided with cutting edge so that the device need not plug into, one-pass molding, avoid interface position processing and using when breach occur existing
As and caused economic loss, fill the domestic gaps, instead of imported product, cost performance is high, low in cost.
Detailed description of the invention
Fig. 1 is overall structure main view of the present invention；
Fig. 2 is overall structure side view of the present invention；
Fig. 3 is that green compact of the present invention fills boat apparatus structure schematic diagram.
In figure: 1 blade, 2 cutter heads, 21 main bodys, 22 blade surfaces, 23 cutting edges, 3 outer fixation holes, fixation hole in 4.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of hard alloy overlength alloy knife, including blade 1,
1 bottom of blade is fixedly connected with cutter head 2, and the positive two sides of blade 1 offer outer fixation hole 3 and interior close to the symmetric position of outer wall
Fixation hole 4, outer fixation hole 3 are located at interior fixation hole 4 close to the side of 1 outer wall of blade, and outer fixation hole 3 and interior fixation hole 4 are respectively positioned on
2 top of cutter head；
Cutter head 2 includes main body 21, and 21 front and back of main body is provided with blade surface 22, and main body 21 is far from blade 1
Side is provided with cutting edge 23.
A kind of preparation method of hard alloy overlength alloy knife, includes the following steps,
Step 1, the preparation of hard alloy overlength alloy knife raw material；
Step 2, hard alloy overlength alloy knife compression moulding；
Step 3, hard alloy overlength alloy knife green compact fill boat and its device；
Step 4, the sintering of hard alloy overlength alloy knife；
Step 5, the roughing of hard alloy overlength alloy knife；
Step 6, the heat treatment of hard alloy overlength alloy knife；
Step 7, the finishing of hard alloy overlength alloy knife.
Step 1 is by cemented carbide material: tungsten carbide 83~92%, cobalt 5~12%, and tungsten carbide-carbonization magnesium-titanium solid solution 3~
5% passes through ingredient, and mixed grinding is carried out in hexanes trituration medium, adds the slurry of paraffin, then it is vacuum dried, be sieved, press
Rubber and wax moulding agent is added in ratio 60:40, and mixture is made in drying.
Mixture is uniformly charged in die cavity by step 2, is suppressed by special equipment precision, is pressed into high density green compact,
It is placed on smooth graphite plate.
Green compact on graphite plate is packed into vacuum drying oven drying 20-36 hours by step 3, so that green compact toughness and hardness
It is moderate, then dry green compact is fitted into graphite boat with green compact dress boat device, is not easily broken when filling boat, it is qualified to improve product
Rate.
Hard alloy overlength alloy knife semi-finished product are made through vacuum dewaxing and sintering or low pressure sintering in step 4 green compact.Green compact
It heats up in sintering temperature and is segmented heat preservation, soaking time: 600 DEG C -800 DEG C heat up 2 hours, keep the temperature 2 hours.800℃-1000℃
Heating 2.5 hours keeps the temperature 2 hours.1000 DEG C -1200 DEG C heat up 3 hours, keep the temperature 2 hours.1200 DEG C of -1400 DEG C of heatings 3 are small
When, keep the temperature 3 hours.When cooling, in -1300 DEG C of coolings 2 hours of 1400 DEG C of temperature, 1300 DEG C -1200 DEG C of coolings 2.5 hours,
1200 DEG C -1100 DEG C of coolings 3 hours, 1100 DEG C -1000 DEG C of coolings 3.5 hours, 1000 DEG C -900 DEG C of coolings 4 hours, 900 DEG C -
800 DEG C cooling 5 hours, 800 DEG C or less cooled to room temperatures.
Rough forging is fixed on numerical control machining center by step 5, first to smooth surface is carried out at the top of blank, then by smooth surface
One side to overturn is retightened in numerical control machining center, and processes hard alloy overlength alloy knife by benchmark face of bottom smooth surface, and
Reaming, fixed hole diameter 5mm are carried out to fixation hole.
Hard alloy overlength alloy knife after roughing in step 5 is put into batch-type furnace and is warming up to 800 by step 6
DEG C, heating rate is 15 DEG C/min, keeps the temperature 100 minutes after being warming up to 800 DEG C, cools to 500 DEG C after heat preservation with the furnace, then go out
Furnace is air-cooled.
Industrial sodium nitrite is added in nitrate furnace and is warming up to 1060~1070 with the heating rate of 3 DEG C/min for step 6
DEG C, by treated, hard alloy overlength alloy knife is put into nitrate furnace, continues to be heated to identical heating rate in nitrate furnace
1060~1070 DEG C, and keep the temperature 15~20 minutes.
By treated, hard alloy overlength alloy knife takes out step 6, quenching oil quenching is put into, in quenching oil
Residence time is 10~15 minutes, and quenched hard alloy overlength alloy knife is put into nitrate furnace and is tempered, then air-cooled.
Abrasive in step 7 is made of green silicon carbide powder, kerosene and machine oil, and step 7 is with abrasive grinding processing side
Method is processed, and carries out grinding using diamond-impregnated wheel.So that the device need not plug into, one-pass molding, interface is avoided
Position processing and using when there is breach phenomenon and caused economic loss, fill the domestic gaps, produced instead of import
Product, cost performance is high, low in cost.
In use, it is of the invention, cutter head is fixedly connected with by blade bottom, blade front two sides are close to the symmetrical position of outer wall
It sets and offers outer fixation hole and interior fixation hole, outer fixed hole position is in interior fixation hole close to the side of blade outer wall, outer fixation hole
It is respectively positioned on above cutter head with interior fixation hole, cutter head includes main body, and the main body front and back is provided with blade surface, and main body is separate
The side of blade is provided with cutting edge, so that the device need not plug into, one-pass molding, avoids interface position in processing and use
There is breach phenomenon and caused economic loss, fill the domestic gaps, instead of imported product, cost performance is high, at low cost
It is honest and clean.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By the sentence " element limited including one, it is not excluded that including
There is also other identical elements in the process, method, article or equipment of element ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (11)
1. a kind of hard alloy overlength alloy knife, including blade (1), it is characterised in that: blade (1) bottom is fixedly connected with
Cutter head (2), the positive two sides of the blade (1) offer outer fixation hole (3) and interior fixation hole close to the symmetric position of outer wall
(4), the outer fixation hole (3) is located at side of the interior fixation hole (4) close to blade (1) outer wall, the outer fixation hole (3) and interior solid
Determine hole (4) to be respectively positioned on above cutter head (2)；
The cutter head (2) includes main body (21), and main body (21) front and back is provided with blade surface (22), the main body
(21) side far from blade (1) is provided with cutting edge (23).
2. a kind of preparation method of hard alloy overlength alloy knife, it is characterised in that: include the following steps,
Step 1, the preparation of hard alloy overlength alloy knife raw material；
Step 2, hard alloy overlength alloy knife compression moulding；
Step 3, hard alloy overlength alloy knife green compact fill boat and its device；
Step 4, the sintering of hard alloy overlength alloy knife；
Step 5, the roughing of hard alloy overlength alloy knife；
Step 6, the heat treatment of hard alloy overlength alloy knife；
Step 7, the finishing of hard alloy overlength alloy knife.
3. a kind of preparation method of hard alloy overlength alloy knife according to claim 2, it is characterised in that: the step
One by cemented carbide material: tungsten carbide 83~92%, cobalt 5~12%, tungsten carbide-carbonization magnesium-titanium solid solution 3~5% pass through ingredient,
Mixed grinding is carried out in hexanes trituration medium, adds the slurry of paraffin, then vacuum dried, sieving, 60:40 addition in proportion
Mixture is made in rubber and wax moulding agent, drying.
4. a kind of preparation method of hard alloy overlength alloy knife according to claim 2, it is characterised in that: the step
Two are uniformly charged mixture in die cavity, suppress by special equipment precision, are pressed into high density green compact, are placed on smooth stone
On black plate.
5. a kind of preparation method of hard alloy overlength alloy knife according to claim 2, it is characterised in that: the step
Green compact on graphite plate is packed into vacuum drying oven drying 20-36 hours by three, so that green compact toughness and hardness are moderate, then with pressure
Dry green compact is fitted into graphite boat by base dress boat device, is not easily broken when filling boat, is improved product qualification rate.
6. a kind of preparation method of hard alloy overlength alloy knife according to claim 2, it is characterised in that: the step
Hard alloy overlength alloy knife semi-finished product are made through vacuum dewaxing and sintering or low pressure sintering in four green compacts.Green compact is in sintering temperature liter
Temperature is simultaneously segmented heat preservation, soaking time: 600 DEG C -800 DEG C heat up 2 hours, keep the temperature 2 hours.800 DEG C -1000 DEG C heat up 2.5 hours,
Heat preservation 2 hours.1000 DEG C -1200 DEG C heat up 3 hours, keep the temperature 2 hours.1200 DEG C -1400 DEG C heat up 3 hours, keep the temperature 3 hours.
When cooling, in -1300 DEG C of coolings 2 hours of 1400 DEG C of temperature, 1300 DEG C -1200 DEG C of coolings 2.5 hours, 1200 DEG C -1100 DEG C are cold
But 3 hours, 1100 DEG C -1000 DEG C of coolings 3.5 hours, 1000 DEG C -900 DEG C of coolings 4 hours, 900 DEG C -800 DEG C of coolings 5 hours,
800 DEG C or less cooled to room temperatures.
7. a kind of preparation method of hard alloy overlength alloy knife according to claim 2, it is characterised in that: the step
Rough forging is fixed on numerical control machining center by five, first to smooth surface is carried out at the top of blank, then again by a side to overturn of smooth surface
It is fixed on numerical control machining center, and processes hard alloy overlength alloy knife by benchmark face of bottom smooth surface, and carry out to fixation hole
Reaming, fixed hole diameter 5mm.
8. a kind of preparation method of hard alloy overlength alloy knife according to claim 2, it is characterised in that: the step
Hard alloy overlength alloy knife after roughing in step 5 is put into batch-type furnace and is warming up to 800 DEG C by six, heating rate
For 15 DEG C/min, 100 minutes are kept the temperature after being warming up to 800 DEG C, 500 DEG C is cooled to after heat preservation with the furnace, then comes out of the stove air-cooled.
9. a kind of preparation method of hard alloy overlength alloy knife according to claim 7, it is characterised in that: the step
Six industrial sodium nitrite is added in nitrate furnace and is warming up to 1060~1070 DEG C with the heating rate of 3 DEG C/min, after processing
Hard alloy overlength alloy knife be put into nitrate furnace, continues to be heated to 1060~1070 with identical heating rate in nitrate furnace
DEG C, and keep the temperature 15~20 minutes.
10. a kind of preparation method of hard alloy overlength alloy knife according to claim 8, it is characterised in that: the step
Rapid six take out treated hard alloy overlength alloy knife, are put into quenching oil quenching, and the residence time in quenching oil is
10~15 minutes, quenched hard alloy overlength alloy knife is put into nitrate furnace and is tempered, it is then air-cooled.
11. a kind of preparation method of hard alloy overlength alloy knife according to claim 2, it is characterised in that: the step
Abrasive in rapid seven is made of green silicon carbide powder, kerosene and machine oil, and the step 7 is with the progress of abrasive grinding processing method
Processing carries out grinding using diamond-impregnated wheel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811652788.9A CN109702232A (en) | 2018-12-28 | 2018-12-28 | A kind of hard alloy overlength alloy knife and preparation method thereof |
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| CN201811652788.9A CN109702232A (en) | 2018-12-28 | 2018-12-28 | A kind of hard alloy overlength alloy knife and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111575599A (en) * | 2020-05-19 | 2020-08-25 | 湘潭大学 | Precipitation strengthening type high-temperature steel bonded hard alloy and preparation method thereof |
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