CN102581271A - Powder metallurgy material mixing method - Google Patents
Powder metallurgy material mixing method Download PDFInfo
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- CN102581271A CN102581271A CN2012100888019A CN201210088801A CN102581271A CN 102581271 A CN102581271 A CN 102581271A CN 2012100888019 A CN2012100888019 A CN 2012100888019A CN 201210088801 A CN201210088801 A CN 201210088801A CN 102581271 A CN102581271 A CN 102581271A
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Abstract
The invention discloses a powder metallurgy material mixing method, which includes the steps: placing powder metallurgy materials and impregnating compounds into a mixing container or placing the powder metallurgy materials, superhard material particles and the impregnating compounds into the mixing container; and mixing the materials in the mixing container for 1-2 hours to obtain solid-liquid fluid mixture and complete material mixing operation. The weight percent of the powder metallurgy materials or the powder metallurgy materials and the superhard material particles ranges from 70% to 90%, and the weight percent of the impregnating compounds ranges from 10% to 30%. Impregnating compound absolute ethyl alcohol is used as a material mixing medium to prepare powder metallurgy superhard material products, time and energy can be effectively saved, operation steps and process are simplified, efficiency is improved, and cost is reduced. The solid-liquid fluid mixture has good flowability, internal components are not layered for a long time when being static, components of mixed liquor are constantly kept uniformly distributed, the overall density uniformity of the products is improved, and the overall strength and the service performance of the products are enhanced.
Description
Technical field
The invention belongs to powder metallurgy superhard material preparation field, be specifically related to a kind of powdered metallurgical material method for mixing.
Background technology
Batch mixing is that the powder metallurgy superhard material prepares the essential operation of process, its objective is in order to make each component powders rapid mixing even.Mostly the powdered metallurgical material method for mixing is the dry mixed method, if dusty material is mixed with superhard material uniform particles such as diamonds, need realize that powder evenly mixes through the wetness that adds increase powders such as a small amount of absolute ethyl alcohol or acetone usually.Because each component physical property difference of composite material is very big, like density, powder grain shape etc., therefore, this method needed accomplish in 12～24 hours.
In addition, the material that adopts conventional powder metallurgy method for mixing to mix is when hand charging; Fire sintered metal product if adopt pressure sintering; Need apply bigger power and could powder be compacted to 1.5～2 times of actual volume,, also need the compaction in layers of layering dress if powder thickness is big; Time-consuming, and higher to operator's specification requirement; If adopt the pressureless impregnation method to fire sintered metal product, need mould be placed on the special-purpose bumper, the ram-jolt while feeding just can make the powder mixture complete filling in mould.
Summary of the invention
The purpose of this invention is to provide a kind of powdered metallurgical material method for mixing, this method is the batch mixing medium with sizes such as absolute ethyl alcohols, implements superhard material goods rapid and uniform batch mixing through in the powder metallurgy composite material, adding size.
The present invention's method is: powdered metallurgical material and size are inserted in the stirred vessel; Or powdered metallurgical material and superhard material particle and size inserted in the stirred vessel; Stir mixing is 1～2 hour in stirred vessel, obtains the two-phase solid-liquid fluid mixture after the stirring, accomplishes the batch mixing operation; Powdered metallurgical material, or the percentage by weight 70～90% of powdered metallurgical material and superhard material particle, size is 10～30%.
Described superhard material particle is a diamond particles; Described size is an absolute ethyl alcohol.
The present invention adopts the size absolute ethyl alcohol to prepare the powdered metallurgical material goods for the batch mixing medium, can effectively save time, the energy, simplifies operating procedure and technology, raises the efficiency, and reduces cost.Each component physical property of powder metallurgy differs greatly (like density; Powder grain shapes etc.), an amount of absolute ethyl alcohol soaks into each material component particle surface and forms an adsorption plane, makes the two-phase solid-liquid fluid compound both have good mobility; Make inner each component not stratified for a long time when static again; Each component of mixed liquor remains each other evenly distribution, improves goods global density uniformity, improves the bulk strength and the serviceability of goods.
The specific embodiment
According to table 1 preparation 55g powdered metallurgical material and 1g diamond particles, put into airtight stirred vessel, add 14g absolute ethyl alcohol size.Stir after 1 hour, pour into rapidly in the sealed glass container, static observation 5 minutes if there is not layering, explains that the absolute ethyl alcohol dosage is moderate.Open sealing, install to rapidly in the preprepared mould, install material after, mould is put in the drying oven, 150 ℃ the oven dry 15 minutes.Naturally after the cooling, from drying oven, take out, be put in the intermediate frequency furnace and fire.
Each constituent content of table 1 powder metallurgy superhard material and surmising
| Title | Wc | YG6 | 663 bronze | Ni | Mn | Co | Diamond | Absolute ethyl alcohol |
| Granularity (order) | 200 | 300 | 300 | 350 | 300 | 350 | 60 | -- |
| Weight (g) | 11 | 5 | 25 | 8 | 3 | 3 | 1 | 14 |
Claims (2)
1. powdered metallurgical material method for mixing; This method is: powdered metallurgical material and size are inserted in the stirred vessel; Or powdered metallurgical material and superhard material particle and size inserted in the stirred vessel; Stir mixing is 1～2 hour in stirred vessel, obtains the two-phase solid-liquid fluid mixture after the stirring, accomplishes the batch mixing operation; Powdered metallurgical material, or the percentage by weight 70～90% of powdered metallurgical material and superhard material particle, size is 10～30%.
2. a kind of powdered metallurgical material method for mixing according to claim 1 is characterized in that: described superhard material particle is a diamond particles; Described size is an absolute ethyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100888019A CN102581271A (en) | 2012-03-30 | 2012-03-30 | Powder metallurgy material mixing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100888019A CN102581271A (en) | 2012-03-30 | 2012-03-30 | Powder metallurgy material mixing method |
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| CN102581271A true CN102581271A (en) | 2012-07-18 |
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| CN2012100888019A Pending CN102581271A (en) | 2012-03-30 | 2012-03-30 | Powder metallurgy material mixing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798290A (en) * | 2016-04-15 | 2016-07-27 | 无锡钻探工具厂有限公司 | Method for evenly distributing diamond in matrix through diamond pelletizing |
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| CN1686944A (en) * | 2005-05-31 | 2005-10-26 | 安泰科技股份有限公司 | Method for preparing high heatconducting aluminium nitride ceramic base sheets through powder metallurgical technique |
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Application publication date: 20120718 |