CN113913645A - Composition and impregnated block wear part prepared from same - Google Patents
Composition and impregnated block wear part prepared from same Download PDFInfo
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- CN113913645A CN113913645A CN202010645641.8A CN202010645641A CN113913645A CN 113913645 A CN113913645 A CN 113913645A CN 202010645641 A CN202010645641 A CN 202010645641A CN 113913645 A CN113913645 A CN 113913645A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention provides a composition and an impregnated block wear part prepared from the composition. The composition comprises a first component, a second component and diamond, wherein the first component comprises copper, tin, zinc, lead and zinc stearate, and the second component comprises paraffin and/or epoxy resin.
Description
Technical Field
The present invention provides a composition, and in particular, an impregnated block wear article made therefrom.
Background
In rotary drilling the drill bit also rock wears the drill bit as it breaks up. The ability of rock to wear the drill bit is referred to as the abrasiveness of the rock. The wear of the drill bit due to the abrasiveness of the rock not only increases the consumption of the drill bit, but also decreases the rate of penetration and increases the assistance time required to replace the drill bit. The abrasiveness of rock is closely related to proper bit selection, proper design of the bit, optimal drilling parameters, and proper formulation of bit consumption rates, which directly affects drilling efficiency and drilling costs.
At present, most of the test methods related to rock abrasiveness tests at home and abroad adopt the principle that metal materials mainly made of steel rub with rocks to measure the rock abrasiveness. The principle is adopted to test the abrasiveness of the rock, and two defects exist: (1) the mechanism of wear of the metal material and the rock is not consistent with that of the drill bit material and the rock; (2) when the metal material wears hard rock, the hard rock cannot be eaten into the rock, and the rock abrasiveness cannot be evaluated without the amount of wear of both the metal material and the rock.
Therefore, there is a need to design a wear standard suitable for hard and soft rock that can conform to the principles of rock and drill bit wear.
Disclosure of Invention
The invention provides a composition which comprises a first component, a second component and diamond, wherein the first component comprises copper, tin, zinc, lead and zinc stearate, and the second component comprises paraffin and/or epoxy resin.
In one embodiment, the total mass of the first component is 100%, copper 82% to 88%, tin 4% to 6%, zinc 4% to 6%, lead 2% to 3%, and zinc stearate 2% to 3%.
In a specific embodiment, the mass/volume ratio of the first combination and the second component is 20 g: 1ml to 20 g:3 ml.
In one embodiment, the mass ratio of the first component to the diamond is 125: 1 to 200: 3.
in one embodiment, the diamond has a particle size of 20 to 60 mesh.
The second aspect of the invention provides a process for preparing a composition according to any one of the first to third aspects of the invention, comprising the steps of:
1) fully mixing the copper, the tin, the zinc, the lead and the zinc stearate to obtain a first component;
2) fully mixing the first component and the second component to obtain a third component;
3) and thoroughly mixing the third component with the diamond to obtain the composition.
In one embodiment, in step 1), mixing is carried out in a blender for 1 to 1.5 hours.
In one embodiment, step 3) is preceded by the step of drying said third component.
In one embodiment, the temperature of the drying is 70 to 80 ℃ and the time of the drying is 1 to 2 hours.
The third aspect of the invention provides an impregnated wear part made from a composition according to any one of the first aspect of the invention or a composition made by a method according to any one of the second aspect of the invention.
In one embodiment, the composition according to any one of the first to the second aspects of the invention or the composition prepared by the method according to any one of the first to the second aspects of the invention is cold-pressed and then vacuum-sintered in two temperature gradient stages.
In one embodiment, the temperature of the first stage of vacuum sintering is from 400 to 500 ℃ for a time from 50 minutes to 1.5 hours; the temperature of the second stage is 850 to 1000 ℃ and the time is 1.5 to 3 hours.
The invention has the beneficial effects that:
the impregnated block standard part prepared from the composition has moderate hardness and strength, and when the abrasive property test of the rock is carried out, the abrasion part can be abraded in different degrees on soft rock and hard rock, so that the abrasive property of the soft rock and the hard rock can be effectively tested and distinguished.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary of the invention and are not to be construed as limiting the invention in any way.
Example 1
(1) 88% of copper, 4% of tin, 4% of zinc, 2% of lead and 2% of zinc stearate are filled into a mixer according to the mass percentage for mixing for 1.5 hours to obtain a fully mixed first component.
(2) The first component was removed from the blender and placed in a glass dish, and the first and second components were mixed at a ratio of 20 g:3ml of the mixture is mixed according to the mass/volume ratio and stirred evenly to obtain a third component. Wherein the second component is paraffin.
(3) And drying the third component for 2 hours at the temperature of 70 ℃ to obtain a dried third component.
(4) And mixing the dried third component and diamond particles with the granularity of 50-60 meshes in a mixer for 2 hours to obtain the composition for preparing the impregnated block wear part, wherein the mass ratio of the first component to the diamond is 125: 1.
(5) weighing 4g of the prepared composition, adding the composition into a steel mold, and carrying out cold press molding under the pressure of 400MPa for 1 minute to obtain a blank.
(6) And (4) putting the blank into a graphite mold, and sintering in vacuum. The sintering method comprises the following steps: the first stage, heating, raising the temperature to 450 ℃, and keeping the temperature for 1 hour; in the second stage, heating is continued, the temperature is increased to 900 ℃, and the temperature is kept for 2 hours; and a third stage: stopping heating, naturally cooling and demoulding. Wherein, the demoulding operation is smooth, and the manufactured impregnated block wearing part has a regular shape and is a standard cylinder.
Example 2
(1) And (2) filling 82% of copper, 6% of tin, 6% of zinc, 3% of lead and 3% of zinc stearate in a mixer according to the mass percentage, and mixing for 1 hour to obtain a fully mixed first component.
(2) The first component was removed from the blender and placed in a glass dish, and the first and second components were mixed at a ratio of 20 g: 1ml of the mixture is mixed according to the mass/volume ratio and stirred evenly to obtain a third component. Wherein the second component is paraffin.
(3) And drying the third component for 1 hour at the temperature of 80 ℃ to obtain a dried third component.
(4) Mixing the dried third component and diamond particles with the granularity of 20-30 meshes in a mixer for 1 hour to obtain the composition for preparing the impregnated block wear part, wherein the mass ratio of the first component to the diamond is 200: 3.
(5) weighing 4g of the prepared composition, adding the composition into a steel mold, and carrying out cold press molding under the pressure of 400MPa for 1 minute to obtain a blank.
(6) And (4) putting the blank into a graphite mold, and sintering in vacuum. The sintering method comprises the following steps: the first stage, heating, raising the temperature to 450 ℃, and keeping the temperature for 1 hour; in the second stage, heating is continued, the temperature is increased to 900 ℃, and the temperature is kept for 2 hours; and a third stage: stopping heating, naturally cooling and demoulding. Wherein, the demoulding operation is smooth, and the manufactured impregnated block wearing part has a regular shape and is a standard cylinder.
Example 3
(1) According to the mass percentage, 85% of copper, 5% of tin, 5% of zinc, 2% of lead and 3% of zinc stearate are put into a mixer for mixing for 1 hour, and a fully mixed first component is obtained.
(2) And taking the first component out of the mixer, putting the first component into a glass dish, mixing the first component and the second component in a mass/volume ratio of 50g to 3ml, and uniformly stirring to obtain a third component. Wherein the second component is epoxy resin.
(3) And drying the third component for 1.5 hours at the temperature of 75 ℃ to obtain a dried third component.
(4) And mixing the dried third component and diamond particles with the granularity of 30-40 meshes in a mixer for 2 hours to obtain the composition for preparing the impregnated block wearing piece, wherein the mass ratio of the first component to the diamond is 1000: 11.
(5) Weighing 4g of the prepared composition, adding the composition into a steel mold, and carrying out cold press molding under the pressure of 400MPa for 1 minute to obtain a blank.
(6) And (4) putting the blank into a graphite mold, and sintering in vacuum. The sintering method comprises the following steps: the first stage, heating, raising the temperature to 450 ℃, and keeping the temperature for 1 hour; in the second stage, heating is continued, the temperature is increased to 900 ℃, and the temperature is kept for 2 hours; and a third stage: stopping heating, naturally cooling and demoulding. Wherein, the demoulding operation is smooth, and the manufactured impregnated block wearing part has a regular shape and is a standard cylinder.
Comparative example 1
(1) According to the mass percentage, 87% of copper, 5% of tin, 5% of zinc and 3% of lead are put into a mixer for mixing for 1 hour, and a fully mixed first component is obtained.
(2) And taking the first component out of the mixer, putting the first component into a glass dish, mixing the first component and the second component in a mass/volume ratio of 50g to 3ml, and uniformly stirring to obtain a third component. Wherein the second component is paraffin.
(3) And drying the third component for 2 hours at the temperature of 70 ℃ to obtain a dried third component.
(4) And mixing the dried third component and diamond particles with the granularity of 30-35 meshes in a mixer for 2 hours to obtain the composition for preparing the impregnated block wearing piece, wherein the mass ratio of the first component to the diamond is 1000: 11.
(5) Weighing 4g of the prepared composition, adding the composition into a steel mold, and carrying out cold press molding under the pressure of 400MPa for 1 minute to obtain a blank.
(6) And (4) putting the blank into a graphite mold, and sintering in vacuum. The sintering method comprises the following steps: the first stage, heating, raising the temperature to 450 ℃, and keeping the temperature for 1 hour; in the second stage, heating is continued, the temperature is increased to 900 ℃, and the temperature is kept for 2 hours; and a third stage: stopping heating, naturally cooling and demoulding. The demoulding operation is difficult, and the manufactured impregnated block wearing part is irregular in shape, is not a standard cylinder and influences later-stage use.
Comparative example 2
(1) According to the mass percentage, 80% of copper, 8% of tin, 8% of zinc, 2% of lead and 2% of zinc stearate are put into a mixer for mixing for 1 hour, and a fully mixed first component is obtained.
(2) And taking the first component out of the mixer, putting the first component into a glass dish, mixing the first component and the second component in a mass/volume ratio of 50g to 3ml, and uniformly stirring to obtain a third component. Wherein the second component is paraffin.
(3) And drying the third component for 2 hours at the temperature of 75 ℃ to obtain a dried third component.
(4) And mixing the dried third component and diamond particles with the granularity of 30-40 meshes in a mixer for 2 hours to obtain the composition for preparing the impregnated block wearing piece, wherein the mass ratio of the first component to the diamond is 1000: 11.
(5) Weighing 4g of the prepared composition, adding the composition into a steel mold, and carrying out cold press molding under the pressure of 400MPa for 1 minute to obtain a blank.
(6) And (4) putting the blank into a graphite mold, and sintering in vacuum. The sintering method comprises the following steps: the first stage, heating, raising the temperature to 450 ℃, and keeping the temperature for 1 hour; in the second stage, heating is continued, the temperature is increased to 900 ℃, and the temperature is kept for 2 hours; and a third stage: stopping heating, naturally cooling and demoulding.
Comparative example 3
(1) 97 percent of copper and 3 percent of zinc stearate are put into a mixer according to the mass percentage for mixing for 1 hour, and a fully mixed first component is obtained.
(2) And taking the first component out of the mixer, putting the first component into a glass dish, mixing the first component and the second component in a mass/volume ratio of 50g to 3ml, and uniformly stirring to obtain a third component. Wherein the second component is paraffin.
(3) And drying the third component for 2 hours at the temperature of 75 ℃ to obtain a dried third component.
(4) And mixing the dried third component and diamond particles with the granularity of 30-40 meshes in a mixer for 2 hours to obtain the composition for preparing the impregnated block wearing piece, wherein the mass ratio of the first component to the diamond is 1000: 11.
(5) Weighing 4g of the prepared composition, adding the composition into a steel mold, and carrying out cold press molding under the pressure of 400MPa for 1 minute to obtain a blank.
(6) And (4) putting the blank into a graphite mold, and sintering in vacuum. The sintering method comprises the following steps: the first stage, heating, raising the temperature to 450 ℃, and keeping the temperature for 1 hour; in the second stage, heating is continued, the temperature is increased to 900 ℃, and the temperature is kept for 2 hours; and a third stage: stopping heating, naturally cooling and demoulding.
And (3) performance testing:
and (3) testing the strength: the uniaxial compressive strength of the pregnant insert abrasion standard part is tested by a pressure tester, and the test result is shown in table 1.
And (3) hardness testing, namely testing the indentation hardness of the pregnant insert abrasion standard part by adopting a Rockwell hardness tester, wherein the measurement result is shown in table 1.
TABLE 1
| Examples | Compressive strength (MPa) | Hardness (HRC) |
| Example 1 | 32.1 | 34 |
| Example 2 | 25.5 | 31 |
| Example 3 | 28.6 | 33 |
| Comparative example 1 | 24.3 | 30 |
| Comparative example 2 | 20.4 | 26 |
| Comparative example 3 | 36.8 | 38 |
When the impregnated block wearing piece is used for carrying out rock abrasiveness test, the axial pressure borne by the impregnated block wearing piece is between 4 and 20MPa, and the compressive strength of the impregnated block wearing piece is more than 25MPa in order to ensure the normal use of the impregnated block wearing piece; when the pregnant insert wearing piece drills and grinds rocks, in order to ensure that diamond particles are exposed at the right time, the hardness of the pregnant insert wearing piece is 30 to 35 HRC. In summary, the composition and the process for preparing the impregnated block wear part can meet the requirements. The strength and hardness of the impregnated block abrasion piece prepared in the comparative example 2 are low, and the requirement of a rock abrasiveness test cannot be met; the strength and hardness of the impregnated block wear part prepared in the comparative example 3 are higher, and the wear part is not easily worn by rock in the rock abrasiveness test, so that the rock abrasiveness cannot be evaluated.
While the invention has been described with reference to specific embodiments, those skilled in the art will appreciate that various changes can be made without departing from the true spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation, material, composition of matter, and method to the essential scope and spirit of the present invention. All such modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (11)
1. A composition comprising a first component, a second component and diamond, wherein the first component comprises copper, tin, zinc, lead and zinc stearate and the second component is a paraffin and/or epoxy.
2. The composition of claim 1, wherein the first component comprises, based upon 100% total mass of the first component, 82% to 88% copper, 4% to 6% tin, 4% to 6% zinc, 2% to 3% lead, and 2% to 3% zinc stearate.
3. Composition according to claim 1 or 2, characterized in that the mass/volume ratio of the first combination and the second component is 20 g: 1ml to 20 g:3 ml.
4. The composition according to any one of claims 1 to 3, wherein the mass ratio of the first component to the diamond is 125: 1 to 200: 3.
5. the composition according to any one of claims 1 to 4, wherein the diamond has a particle size of 20 to 60 mesh.
6. A process for preparing a composition according to any one of claims 1 to 5, comprising the steps of:
1) fully mixing the copper, the tin, the zinc, the lead and the zinc stearate to obtain a first component;
2) fully mixing the first component and the second component to obtain a third component;
3) and thoroughly mixing the third component with the diamond to obtain the composition.
7. The method of claim 6, wherein in step 1), the mixture is mixed in a blender for 1 to 1.5 hours.
8. The method according to claim 6 or 7, further comprising the step of drying the third component prior to step 3).
9. The method of claim 8, wherein the temperature of the drying is 70 to 80 ℃ and the time of the drying is 1 to 2 hours.
10. An impregnated block wear part prepared from a composition according to any one of claims 1 to 5 or prepared by a process according to any one of claims 6 to 9.
11. The impregnated block wear part as claimed in claim 10, wherein the composition as claimed in any one of claims 1 to 5 or prepared by the method as claimed in any one of claims 6 to 9 is cold-pressed and then vacuum sintered in two temperature gradient stages.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010645641.8A CN113913645B (en) | 2020-07-07 | 2020-07-07 | Composition and impregnated block wear part prepared from same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010645641.8A CN113913645B (en) | 2020-07-07 | 2020-07-07 | Composition and impregnated block wear part prepared from same |
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| CN113913645B (en) | 2022-07-22 |
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