AU2021101717A4 - Versatile split tool used for preparation of mechanical and tribological test samples in powder metallurgy - Google Patents

Versatile split tool used for preparation of mechanical and tribological test samples in powder metallurgy Download PDF

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Publication number
AU2021101717A4
AU2021101717A4 AU2021101717A AU2021101717A AU2021101717A4 AU 2021101717 A4 AU2021101717 A4 AU 2021101717A4 AU 2021101717 A AU2021101717 A AU 2021101717A AU 2021101717 A AU2021101717 A AU 2021101717A AU 2021101717 A4 AU2021101717 A4 AU 2021101717A4
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Australia
Prior art keywords
plate
tool
hardness
test samples
tensile
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AU2021101717A
Inventor
Nagaswarupa H. P.
Praveen M. V.
Rudresh M.
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/02—Die constructions enabling assembly of the die parts in different ways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/10—Die sets; Pillar guides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56—Investigating resistance to wear or abrasion
    • G01N3/565—Investigating resistance to wear or abrasion of granular or particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/06—Making more than one part out of the same blank; Scrapless working
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/44—Sample treatment involving radiation, e.g. heat

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  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

VERSATILE SPLIT TOOL USED FOR PREPARATION OF MECHANICAL AND TRIBOLOGICAL TEST SAMPLES IN POWDER METALLURGY ABSTRACT The present invention relates to an apparatus tool used for the production of different mechanical and tribological test samples in powder metallurgy. This novel single splitting die tool apparatus can be used to produce different test samples such as tensile, compression, wear, hardness and green strength by the splitting the plates into different direction. The apparatus is a versatile and very cost effective due to the possibility of generate the different test samples in a single tool. The tool consists of four different interchangeable and reversible plates where we can split and change the mold shape according to the test samples. DRAWINGS 704 700 703 711 705 702 706 710 712 718 709 713 708 714 707 716 715 Figure 1. Overview of an assembled tool set-up 720 7719 717 718 Figure 2. Green strength, Hardness and Wear sample punch

Description

DRAWINGS
704 711 700 703 705 702 706
710 712 718 709 713 708 714 707
716 715
Figure 1. Overview of an assembled tool set-up
720 7719 717 718 Figure 2. Green strength, Hardness and Wear sample punch
EDITORIAL NOTE
2021101717
THERE ARE FOUR PAGES OF DESCRIPTION ONLY VERSATILE SPLIT TOOL USED FOR PREPARATION OF MECHANICAL AND TRIBOLOGICAL TEST SAMPLES IN POWDER METALLURGY FIELD OF INVENTION
[01] The embodiment herein generally relates to the field of powder metallurgy. More specifically, the invention provides a versatile low cost apparatus for the production of mechanical and tribological test samples such as tensile, compression, wear, hardness and green strength.
BACKGROUND AND PRIOR ART
[02] Since many decades, researchers, industries and other manufacturing sectors are using powder metallurgy as an important process for the manufacturing of high performance metal matrix composites. Many numbers of researches have been conducting extensive research in the area of powder metallurgy for the development of light weight, high performance metal matrix composites for structural applications.
[03] In general, since many years, test samples of mechanical and tribological characterization have been preparing by using conventional die through casting method. For each characterization, we have to use separate die to prepare the specific test samples. For instance, preparation of tensile and wear tests samples, we have to use separate die for tensile as well as wear test samples which makes time consuming and expensive. Therefore, there is a need to develop a low cost versatile apparatus for making production of tensile, compression, wear, hardness and green strength samples for testing purpose.
SUMMARY OF THE INVENTION
[04] In view of the forgoing, an embodiment herein provides an apparatus for versatile low cost multi-purpose single tool for the production of tensile, compression, wear, hardness and green strength samples.
[05] According to the embodiment, the apparatus is versatile where we can get the tensile samples in one assembly and green strength, compression and wear samples in another assembly of the same tool by reversing the fixed and movable plates and by changing the punches accordingly. The apparatus consists of top half and bottom half, the top half is mounted with tensile punch while taking the tensile samples and compression, green strength and wear punch while taking these samples. Punch profile is machined using the 5-axis milling machine as per the ASTM standard and the bottom half is mounted with fixed and movable plate where both ends of the plates are wire cut for tensile sample profile and compression, green strength and wear sample profile as per the ASTM standard.
[06] Tool is aligned during the assembly stage using the guide pillar which is provided on the top plate which guides on the guide bush which is provided on to the bottom plate which ensures the proper alignment between both the halves.
[07] Tool is loaded onto the hydraulic loading machine and the composite powder material which is kept inside the oven for certain temperature is placed inside the sample opening slot of the tool and the top halves move downwards and load is applied using the punch. Once the certain load is obtained the top halve or the punch is moved away from the bottom half. Later the movable plate screw is unscrewed and guide pins are pulled so that the movable plate is moved away from the fixed plate and samples are taken out.
OBJECTS OF THE INVENTION
[08] A main object of the present invention is thus to mitigate such drawbacks by proposing an apparatus tool for preparing different kind of test samples in a single tool. The invention provides a versatile low-cost tool for producing test samples such as tensile, compression, wear, hardness and green strength in a single tool.
BRIEF DESCRIPTIONS OF DRAWINGS
[09] The detailed description is set forth with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference identifies the figure in which the reference number first appears. The use of the same reference numbers in different figures indicates similar or identical items.
[10] Figure 1 illustrates the versatile apparatus of split tool for powder metallurgy
[11] Figure 2 illustrates the Green strength, Hardness and Wear sample punch
[12] Figure 3 illustrates the tensile sample tool
[13] Figure 3 illustrates the Green strength, Hardness and Wear sample tool
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[14] A novel low-cost versatile split tool apparatus has been developed which is useful for the production of mechanical and tribological test samples including tensile, compression, wear, hardness and green strength. The complete set-up of the split tool is shown in the Figures from 1 to 4 and their detailed descriptions were explained in the below:
[15] Figure 1 illustrates the versatile split tool for powder metallurgy in production of samples for testing mechanical and tribological aspects. Below points shows the process compressing the steps of assembling the tool.
[16] Fixed halve (701) consists of bottom plate (704) which made-up of C45 and non-hardened material. Four holes accommodated at the end of the bottom plate (704) to fix the Guide Bush (716). Guide Bush (716) was made-up of 20 MnCr which was used for the top plate alignment. Four screw holes tapped (706 and 709) and two dowel pins reamed (705) to fix the fixed plate (703) and movable plate (707). Square slot milled at the center of the plate to accommodate the hardened plate which was made-up of HDS material to withstand the load applied on the profile.
[17] Fixed plate (703) which was made-up of HCHR steel and hardened to 50 HRC. It (705) has two dowel holes (705) and also has two screw holes (706) which were counter bored to suit the screw head. One side of the fixed plate (703) has been designed for tensile profile (710) and another side of the same plate (705) designed for all other profes including green strength (717), compression, hardness (718) and wear (719). The fixed plate (703) was aligned by using the dowel pins (705) and bolted screws (706) to the bottom plate (704).
[18] Movable plate (707) which was made-up of HCHCR steel and hardened to 50HRC. It (707) has two guide holes (708) which was wire cut across the movable plate (707). The guide pins have passed through guide holes (708) and aligned with the fixed plate (703). The movable plate (707) consists of two screw holes (709) which were counter bore holed to suit the screw head and fixed to the bottom plate (704). One side of the movable plate (707) was wire cut for the tensile profile (710) and another side of the same plate (707) designed for all other profiles including green strength (717), compression, hardness (718) and wear (719). The movable plate
(707) was aligned to the fixed plate (703) using the guide pins (708) and bolted screws (709) to the bottom plate (704).
[19] Movable halve (702) consists of top plate (711) which was made-up of C45 non-hardened material. Movable halve (702) consists of four guide pillars (715) which were made-up of MnCr have been fixed to the top plate (711) which align to the fixed halve of the tool. There are two separate punch plates (tensile punch plate (712) and another punch plate which consists of green strength, compression and hardness sample punch plate (720)) which can be fixed to the top plate (711) by using four screw holes (714) and two dowel pins (713) as shown in the Figures from 1 to 4.
[20] Tensile punch plate (712) is made-up of HCHCR and hardened to 50HRC and has four screw holes (714) to fasten the top plate and two dowel holes (713).
[21] Green strength, hardness and wear samples can be produced by a single punch plate (722) which was made-up of HCHCR materials and hardened to 50HRC. It has four screw holes (714) to fasten the top plate and two dowel holes (713).
[22] Hence this is totally a versatile tool which is very flexible and easily convertible to produce different samples with less time, robust in design and highly low cost.
EDITORIAL NOTE
2021101717
THERE ARE TWO PAGES OF CLAIMS ONLY

Claims (8)

VERSATILE SPLIT TOOL USED FOR PREPARATION OF MECHANICAL AND TRIBOLOGICAL TEST SAMPLES IN POWDER METALLURGY WE CLAIM
1. A novel low-cost versatile split tool apparatus has been developed which is useful for the production of mechanical and tribological test samples including tensile, compression, wear, hardness and green strength. The split tool consists of top plate (711), bottom plate (704), fixed plate (703), movable plate (707), dowel pins (705 and 713), allen screws (706, 709 and 714), guide pins (708), tensile punch plate (712), green strength, hardness and wear sample punch plate (720), guide pillar (715) and guide bush (716). Above tool is a versatile tool where in which one side of the tool assembly can be used to produce the tensile samples (721) and another side of the same tool is assembled to produce the green strength, hardness and wear samples (722).
2. The apparatus of claim 1, wherein the four numbers of guide pillars (715) fixed on to the top plate (711) and four numbers of guide bush (716) fixed on to the bottom plate (704) wherein guide pillar guides into the guide bush interim which aligns the top and bottom plate.
3. The apparatus of claim 1, wherein the Fixed plate (703) fixed on to the bottom plate (704) using dowel pins (705) and Allen screw (706)
4. The apparatus of claim 1, wherein the movable plate (707) is guided to fixed plate (703) using two numbers of guide pins (708) and later bolted to bottom plate (704) using Allen screws (709)
5. The apparatus of claim 1, wherein the tensile plate (712) is mounted onto the top plate (711) using dowel pins (713) and allen screws (714)
6. The apparatus of claim 1, wherein the Green strength, Hardness and Wear sample punch plate (720) is mounted onto the top plate (711) using Dowel pins (713) and Allen screws (714)
7. The apparatus of claim 1, wherein by assembling fixed plate (703), movable plate (707) and tensile plate (712) to produce the tensile component sample (Figure 3) and the samples produced according to ASTM standard B 925 - 03.
8. The apparatus of claim 1, wherein by reverse assembling the Fixed plate (703), movable plate (707) and assembling the green strength, hardness and wear sample punch plate (720) to produce the green strength, hardness and wear test samples (Figure 4) and the samples produced according to ASTM standard B 925 - 03. FIGURES
AU2021101717A 2021-04-03 2021-04-03 Versatile split tool used for preparation of mechanical and tribological test samples in powder metallurgy Ceased AU2021101717A4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2021101717A AU2021101717A4 (en) 2021-04-03 2021-04-03 Versatile split tool used for preparation of mechanical and tribological test samples in powder metallurgy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2021101717A AU2021101717A4 (en) 2021-04-03 2021-04-03 Versatile split tool used for preparation of mechanical and tribological test samples in powder metallurgy

Publications (1)

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AU2021101717A4 true AU2021101717A4 (en) 2021-06-10

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MK22 Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry