CN110154257A - A kind of hard alloy squeezes the preparation process of plasticising compound blank - Google Patents
A kind of hard alloy squeezes the preparation process of plasticising compound blank Download PDFInfo
- Publication number
- CN110154257A CN110154257A CN201910389337.9A CN201910389337A CN110154257A CN 110154257 A CN110154257 A CN 110154257A CN 201910389337 A CN201910389337 A CN 201910389337A CN 110154257 A CN110154257 A CN 110154257A
- Authority
- CN
- China
- Prior art keywords
- blank
- mixing
- compound blank
- hard alloy
- squeezes
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
Abstract
The present invention provides the preparation processes that a kind of hard alloy squeezes plasticising compound blank, it mainly include that mixing is preceding with glue, mixture and with processing steps such as glue mixings, made hard alloy extruding plasticising compound blank is uniformly mixed, soft and surface is smooth, fracture is fine and closely woven, properties of product are stablized, and cracking occur in extrusion process, the probability of scrapping defect substantially reduces.
Description
Technical field
This application involves cemented carbide material production fields, and the preparation of plasticising compound blank is squeezed particularly with regard to a kind of hard alloy
Technique.
Background technique
Cemented carbide body because it is with special erosion resistant, high rigidity, excellent fracture toughness and compression strength, thus
Electronics industry, timber processing, space flight and aviation industry, mould industry, the fields such as mine obtained very extensive application.Currently, such as
Manufacturing micro- brill, various milling cutters, reamer, step tool, stock cutter, screw tap, print needle used in computer board etc. is all extremely to manage
The previous materials thought.With being constantly progressive for current science and technology, the demand of cemented carbide material is also measured also increasing.It squeezes
Task be the determination trade mark that will have been made a good job of mixture and it is a certain proportion of molding plasticizer composition colloid mixture, pour into
In double helix mixing machine, rolling-type is repeated before the deadline and is stirred, through up to 2.5 hours to 3.0 hours
After roll-in grinding, make plasticising mixing blank in evenly sized bulk sphere, then discharging start it is die-filling evacuate it is pre- squeeze, through elder generation
After secondary charging evacuates pre- squeeze afterwards, then slowly squeeze out through high pressure it is various needed for specifications pole blank.And above-mentioned molding is plasticized glue
The preparation of base has an important influence the process such as subsequent extruding, sintering, and then influences the mechanical property of cemented carbide body.
Summary of the invention
For this purpose, the present invention proposes that a kind of hard alloy squeezes the preparation process of plasticising compound blank, it is intended to improve hard alloy increasing
Plastic blank prepares quality, provides quality assurance for subsequent technique process.
In order to achieve the above objectives, the solution of the present invention is as follows:
1) match glue before being kneaded；Every kind of melten gel is calculated by the respective degree of melten gel by each defined powder weight
The actual weight of required forming agent accurately weighs weight, is poured into clean stainless steel melt adhesive bucket respectively；By needed for mixing
Temperature regulates the required power of electric furnace and the time of required mixing；
2) first the mixture of constant weight is slowly shoveled in mixing cabinet, starts stirring blade, be slow added into
Defined glue amount shuts down closing lid after stirring 3-5 minutes；
3) vacuum air valve is opened, starts to evacuate, when vacuum degree reaches 0.08 Mpa of gauge pressure, screw agitation shaft is opened and starts
Stirring；It is mixed 3-5 minutes, to prevent material temperature from increasing, opens chilled water so that material temperature is cooling；
Note: discharging in 2.5 hours to 3.0 hours can be continuously mixed in primary material (can be switched on inspection 1 to 2 time halfway)；Again
The general every mixing of raw material 30 minutes；
If dough is too hard in mixing, extruding can be given and cause very big deformation drag.Therefore after mixing
Phase will especially carry out the inspection of micelle fracture and the soft hardness of micelle when that will discharge, if too hard, be suitably added dissolution
Very capable naphthane (naphthalene is graceful) solvent squeezes the pliability of green body to improve；
4) continuously the acquisition of mixing stipulated time is soft, surface is smooth, fracture is fine and closely woven, turns off after blank of uniform size
Chilled water closes vacuum valve, shuts down stirring, blank is discharged into clean stainless steel charging basket；
5) stand-by boat is thoroughly shaved and is cleaned up and the uniform brushing graphite powder on boat, by the glue after mixing
Base fills boat, mixes ball material card and is transferred to extrusion process.
Note: the foreign matter remained on boat is removed completely if be not thorough, best coating can also be brushed unevenly；If but
Boat clear up really it is very clean, but in painting process coating do not stir evenly perhaps coating incorporation moisture content it is too many or
Coating, which is mixed with tap water etc., also can seriously cause the uneven of graphite boat coating, at this moment the surface of pole blank and groove face
It is a kind of line contact, so as to cause the harm of the deformation of the carburizing and product of viscous boat, surface and deep layer.
Uniform according to foregoing invention content hard alloy extruding plasticising compound blank plasmid obtained, properties of product are stablized,
There is cracking in extrusion process, the probability of scrapping defect substantially reduces, by experimental identification, the hard alloy produced through the technique
Body product grains are uniform, do not have the defects of gap, and stable mechanical property provides quality assurance for subsequent requirement.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
1) match glue before being kneaded；By powder weight as defined in each, by the respective degree of melten gel (match glue ratio referring to
Table one), the actual weight of forming agent needed for calculating every kind of melten gel accurately weighs weight (powder 150kg, the quick 236g of Aesop, fiber
Plain 1178g, the graceful 9090g of naphthalene), it is poured into clean stainless steel melt adhesive bucket respectively；By 200 DEG C of melting temperature, electric furnace is regulated
Required power and required mixing time, the melting temperature of (about 190 DEG C ± 5 DEG C) and scaling loss are weightless at an established temperature
Relationship is as shown in Table 2；
Table one matches the list of glue ratio
Two melting temperature of table and weightless relationship
| Temperature (DEG C) | Mixing time | Weightless (%) | Remarks |
| 195℃ | 160 minutes | 3.00% | Without non-fusant |
| Ibid | 100 minutes | 1.40% | Ibid |
| Ibid | 70 minutes | 1.15% | Ibid |
| Ibid | 50 minutes | 0.04% | Almost without non-fusant |
| Ibid | 30 minutes | 0.01% | Non- fusant is not found |
2) first 25KG (50KG) mixture is slowly shoveled in mixing cabinet, starts stirring blade, is slow added into
Defined glue amount is shut down after stirring 3/5 minute, and slightly cleaning can closing lid；Mixture overweights the relationship such as table for being kneaded glue amount
Shown in three.
Three mixture weight and rubber compound relationship of table
| Mixture weight (KG) | It is kneaded glue amount (KG) |
| 25 | 1.70-1.75 |
| 50 | 3.40-3.50 |
3) vacuum air valve is opened, starts to evacuate, when vacuum degree reaches 0.08 Mpa of gauge pressure, screw agitation shaft is opened and starts
Stirring；It is mixed 3/5 minute, to prevent material temperature from increasing, opens chilled water so that material temperature is cooling；
Note: discharging in 2.5 hours to 3.0 hours can be continuously mixed in primary material (can be switched on inspection 1 to 2 time halfway)；Again
The general every mixing of raw material 30 minutes；
If dough is too hard in mixing, extruding can be given and cause very big deformation drag.Therefore after mixing
Phase will especially carry out the inspection of micelle fracture and the soft hardness of micelle when that will discharge, if too hard, be suitably added dissolution
Very capable naphthane (naphthalene is graceful) solvent squeezes the pliability of green body to improve；
4) continuously the acquisition of mixing stipulated time is soft, surface is smooth, fracture is fine and closely woven, turns off after blank of uniform size
Chilled water closes vacuum valve, shuts down stirring, blank is discharged into clean stainless steel charging basket；
5) stand-by boat is thoroughly shaved and is cleaned up and the uniform brushing graphite powder on boat, by the glue after mixing
Base fills boat, mixes ball material card and is transferred to extrusion process.
Note: the foreign matter remained on boat is removed completely if be not thorough, best coating can also be brushed unevenly；If but
Boat clear up really it is very clean, but in painting process coating do not stir evenly perhaps coating incorporation moisture content it is too many or
Coating, which is mixed with tap water etc., also can seriously cause the uneven of graphite boat coating, at this moment the surface of pole blank and groove face
It is a kind of line contact, so as to cause the harm of the deformation of the carburizing and product of viscous boat, surface and deep layer.
In conclusion squeezing uniformly mixed plasticising compound blank, softness and surface light using the hard alloy of above-mentioned technique production
It is sliding, fracture is fine and closely woven, properties of product are stablized, and occur cracking in extrusion process, the probability of scrapping defect substantially reduces, through the technique
The cemented carbide body product grains of production are uniform, do not have the defects of gap, and stable mechanical property provides for subsequent requirement
Quality assurance.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of hard alloy squeezes the preparation process of plasticising compound blank, have the following steps are included:
1) match glue before being kneaded；It is calculated needed for every kind of melten gel by each defined powder weight by the respective degree of melten gel
The actual weight of forming agent accurately weighs weight；For alloy pole, the total compound blank percentage of colloidal sol Zhan are as follows: Yi Suomin
0.15%, naphthalene graceful 0.785%, ethyl cellulose 6.06% is described for plate side's item, tubing, screw blade and similar profile
The total compound blank percentage of colloidal sol Zhan are as follows: the quick 0.1-0.18% of Aesop, naphthalene graceful 0.6-0.95%, ethyl cellulose 6.0-8.7%；By powder
Material and colloidal sol are poured into respectively in clean stainless steel melt adhesive bucket；By be kneaded needed for temperature regulate electric furnace required power and
The time of required mixing；
2) first the mixture of constant weight is slowly shoveled in mixing cabinet, starts stirring blade, be slow added into regulation
Glue amount, stirring 3-5 minute after shutdown closing lid；
3) vacuum air valve is opened, starts to evacuate, when vacuum degree reaches gauge pressure 0.08Mpa, screw agitation shaft is opened and starts to stir；
It is mixed 3-5 minutes, to prevent material temperature from increasing, opens chilled water so that material temperature is cooling；
4) continuously the acquisition of mixing stipulated time is soft, surface is smooth, fracture is fine and closely woven, turns off freezing after blank of uniform size
Water closes vacuum valve, shuts down stirring, blank is discharged into clean stainless steel charging basket；
5) stand-by boat is thoroughly shaved and is cleaned up and the uniform brushing graphite powder on boat, the compound blank after mixing is filled
Boat mixes ball material card and is transferred to extrusion process.
2. a kind of hard alloy as described in claim 1 squeezes the preparation process of plasticising compound blank, it is being mixed in step 3)
Later period when will discharge, micelle fracture and the soft hardness of micelle are checked, if too hard, are suitably added naphthane
(naphthalene is graceful) solvent squeezes the pliability of green body to improve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910389337.9A CN110154257A (en) | 2019-05-10 | 2019-05-10 | A kind of hard alloy squeezes the preparation process of plasticising compound blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910389337.9A CN110154257A (en) | 2019-05-10 | 2019-05-10 | A kind of hard alloy squeezes the preparation process of plasticising compound blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110154257A true CN110154257A (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910389337.9A Pending CN110154257A (en) | 2019-05-10 | 2019-05-10 | A kind of hard alloy squeezes the preparation process of plasticising compound blank |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695678A (en) * | 2013-12-31 | 2014-04-02 | 杭州天石硬质合金有限公司 | Hard alloy production process |
| CN107737920A (en) * | 2017-10-25 | 2018-02-27 | 浙江德威硬质合金制造有限公司 | Produce the pressing method of hard alloy bar |
| CN107805396A (en) * | 2017-10-25 | 2018-03-16 | 浙江德威硬质合金制造有限公司 | Improved hard alloy paraffinic base extrusion molding agent |
| CN109014178A (en) * | 2018-08-31 | 2018-12-18 | 晋城鸿刃科技有限公司 | The preparation method of hard alloy extrusion forming |
-
2019
- 2019-05-10 CN CN201910389337.9A patent/CN110154257A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695678A (en) * | 2013-12-31 | 2014-04-02 | 杭州天石硬质合金有限公司 | Hard alloy production process |
| CN107737920A (en) * | 2017-10-25 | 2018-02-27 | 浙江德威硬质合金制造有限公司 | Produce the pressing method of hard alloy bar |
| CN107805396A (en) * | 2017-10-25 | 2018-03-16 | 浙江德威硬质合金制造有限公司 | Improved hard alloy paraffinic base extrusion molding agent |
| CN109014178A (en) * | 2018-08-31 | 2018-12-18 | 晋城鸿刃科技有限公司 | The preparation method of hard alloy extrusion forming |
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Application publication date: 20190823 |