Superabrasive wire saw and associated methods of manufacture

A super abrasive, super technology, applied in the fields of physics and materials science, chemistry, can solve problems such as the inability to achieve chemical bonding

Inactive Publication Date: 2006-10-25
RITEDIA CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods yield a tool with greater grain retention than a tool without chemically bonded superabrasive grains, in general solid-state sintering of the solder alloy is only Cures the matrix material without achieving a tight chemical bond like solid-state and vapor deposition techniques

Method used

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  • Superabrasive wire saw and associated methods of manufacture
  • Superabrasive wire saw and associated methods of manufacture
  • Superabrasive wire saw and associated methods of manufacture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] A thin film of an acrylic bond was used to cover the 40 / 50 mesh size diamond grit. The binder covered diamonds were then mixed with a powdered metal alloy containing B, Ni, Cr, Si having an average particle size of about 325 mesh size and trade name NICROBRAZ LM(R), manufactured by Wall Colmonoy Company. The result is a brazed powder-coated diamond. Then the coated abrasive grains were mixed with Al 2 o 3 fine powder mix. in a vacuum furnace at a pressure of 10 -5 The mixture was heated at torr for about 17 minutes, to a maximum temperature of about 1005° C. to ensure that the metal alloy coating melted, liquefied and flowed around the diamond grit to wet it out. The mixture was then cooled and removed from the vacuum oven. Diamond abrasive grains and Al 2 o 3 After separation, many coated abrasive grains were mixed with a cobalt powder and sintered in a hot press to form rectangular segments. Use pliers to bend to break some of these pieces off. The fractured ...

Embodiment 2

[0076] Same process as in Example 1, but using diamond abrasive grains with an average particle size of about 325 to about 400 meshes instead of Al 2 o 3 Powder release agent. During the heating process, the solder alloy coating infiltrates the smaller diamond grains and forms a chemical bond with the outside of the coated diamond grains. Thus, a coating of diamond abrasive grains is produced having chemical bonds with the metal alloy shell, with the smaller diamond abrasive grains further bonded to the outside of the shell. These "spiky" coated abrasive grains were incorporated into a cobalt matrix and fracture tested as above with similar results.

Embodiment 3

[0078] Same procedure as Example 2, but using SiC abrasive grains instead of smaller diamond abrasive grains. This process resulted in a diamond grit coating with ceramic grits bonded to the outside of the metal coating similar to the diamond grit of Example 2. Furthermore, similar results to those of Example 1 and Example 2 were obtained in this fracture test.

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Abstract

A superabrasive wire saw having a plurality of individual coated superabrasive particles (14) attached to a wire (10) with an organic binder (42) is disclosed and described. The superabrasive particle (46) can be coated with a solidified coating (48) of a molten braze alloy that is chemically bonded to the superabrasive particle (46). The organic binder ( 42) can optionally contain filler materials and / or an organometallic coupling agent to improve the retention of coated superabrasive particles (14). The resulting superabrasive wire saws (28) can be produced having diameters of less than 0.5 mm, which significantly reduce kerf loss. Various methods for making and using such a superabrasive wire saw are additionally disclosed and described.

Description

technical field [0001] The present invention relates to a wire saw comprising several superabrasives and methods of making and using the same. Accordingly, the present invention relates to the fields of chemistry, physics and materials science. Background technique [0002] During the last century, several types of abrasives and superabrasives have been developed for performing the general function of removing material from a workpiece. Actions such as sawing, drilling, polishing, cleaning, carving, and sanding are all examples of material removal processes that have become the basis of various industries. [0003] Many special material removal applications require the use of superabrasives. In these cases, due to the nature of the workpiece or the surrounding environment of the machining, it is not feasible to use conventional grinding tools. For example, when attempting to cut stone, tile, cement, etc. using a conventional saw blade, such cutting operations are limited,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28D1/08B23D61/18B24BB24D3/00B24D18/00B24D99/00B28D1/12
CPCB23D61/185B28D1/124B23D61/18B24D3/00B28D1/08
Inventor 宋健民
Owner RITEDIA CORPORATION
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