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Diamond bead string and manufacturing method thereof as well as rope saw without base body supporting layer

A diamond beading and diamond technology, which is applied in the direction of metal sawing equipment, stone processing equipment, metal processing equipment, etc., can solve the problems of affecting the service life of cutting stone, not being able to have enough, increasing costs, etc.

Active Publication Date: 2012-12-19
XIAMEN ZL DIAMOND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production cost of this process is still relatively high. The reason is that on the one hand, many pores are formed on the sintered diamond element. Therefore, a process of infiltrating silver-copper and other alloy solutions must be added later. It is more expensive, and the infiltration process is complicated, so the production cost of diamond beads is increased; on the other hand, diamond beads are still a traditional design, that is, the diamond bead blank needs to be loaded on the metal cylinder substrate, and then sintered, so that not only Increased cost, also can't make small diameter multi-layer diamond beads
Even if a diamond bead containing a matrix with a diameter of 5mm is made, but because the working layer is above the matrix, it cannot have a sufficient thickness such as 1mm or more, thus affecting the service life of the cut stone
Adding the base layer of the metal cylindrical cylinder again increases the complexity of the process, thereby also increasing the cost

Method used

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  • Diamond bead string and manufacturing method thereof as well as rope saw without base body supporting layer
  • Diamond bead string and manufacturing method thereof as well as rope saw without base body supporting layer
  • Diamond bead string and manufacturing method thereof as well as rope saw without base body supporting layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment 1: a kind of preparation method of diamond bead, comprises the steps:

[0065] 1), the prepared metal pre-alloyed powder with a diameter of 0.5-20 microns (weight ratio is Co-20%, Ni-10%, Cu-28%, Fe-30%, Cr-3%, Sn-5 %, P-3%, Si-1%) and 3% of 40 / 50 mesh diamond are mixed for later use;

[0066] 2) Mix metal powder containing 70% diamond by volume, 15% paraffin, 14.5% polyethylene, and 0.5% stearic acid in a metal mixing tank under gas protection at a temperature of 200 degrees;

[0067] 3), the mixed raw material (granule mixture 7) is made into particles with a diameter of about 2mm;

[0068] 4) Put the raw material particles 7 into the hot pressing mold with the cavity prepared, such as Figure 8 As shown, the hot stamping die is composed of a mold cover 8, a lower pressing head 9, an upper pressing head 10, and a product cavity 11. It is hot-pressed at 200 degrees, and after cooling and demoulding, it can form a diamond bead rough blank;

[0069] 5) Put...

Embodiment 2

[0071] Embodiment 2: a kind of preparation method of diamond bead, comprises the steps:

[0072] 1), the prepared metal pre-alloyed powder with a diameter of 0.5-20 microns (weight ratio is Co-60%, Ni-10%, Cu-10%, Fe-12%, Cr-3%, Sn-4 %, Si-1%) and 2.8% of 40 / 50 diamond are mixed for later use;

[0073] 2) Mix the diamond-containing metal powder with a small amount of paraffin and polyethylene at a temperature of 200 degrees;

[0074] 3) Make the mixed raw materials into particles with a diameter of about 2mm;

[0075] 4) Put the pellets into the barrel of the injection molding machine to heat, and inject them into the mold through the injection molding machine, such as Figure 9 , The mold is composed of a product cavity 11, a mold core 12, a sprue 13, a branch sprue 14, a template 15, and the like. After injection molding, the rough blank of diamond beads can be obtained;

[0076] 5) Put the cylindrical diamond bead rough blank into the degreasing furnace for degreasing; ...

Embodiment 3

[0078] Embodiment 3: a kind of preparation method of diamond bead, comprises the steps:

[0079]1), the prepared metal pre-alloyed powder with a diameter of 0.5-20 microns (weight ratio is Co-80%, Cu-15%, Sn-5%) and diamond with a mesh size of 40 / 50 (content 2.5%) ready after mixing;

[0080] 2) Mix metal powder containing diamond and a small amount of paraffin evenly at room temperature;

[0081] 3) Put the mixed raw materials into a cold press and cold press to obtain a cylindrical rough diamond bead;

[0082] 4) Put the rough blank into the diamond tool hydrogen sintering furnace, raise the temperature to 880 degrees, and sinter it at one time to obtain a finished product of diamond beads with a diameter of 4.5mm.

[0083] String the finished diamond beads into the wire rope, and then make a diamond wire saw.

[0084] In the above three embodiments, the diamond of the present invention can also be other superhard materials, such as cemented carbide, cubic boron nitride, ...

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Abstract

The invention discloses a diamond bead string and a manufacturing method thereof as well as a diamond bead string rope saw without a base body supporting layer. The manufacturing method of the diamond bead string comprises the following steps of: uniformly mixing metal powder, diamond and an organic binding agent; manufacturing a rough blank of the diamond bead string through a pre-hot-pressing modeling or metal injection molding (MIM) process; and obtaining a finished product of the diamond bead string by placing the rough blank in a high-temperature furnace for one-step sintering modeling process after degreasing. The manufacturing method of the diamond bead string provided by the invention can be used for sintering the rough blank in one step to form an entire cylindrical bead string without a bead string base body layer; the external diameter of the bead string becomes smaller, so that the bead string can be directly stringed into a steel wire rope to obtain a diamond rope saw with a smaller external diameter; the bead string is molded through one step without a last-stage permeation process, so that the production cost of the diamond bead string is greatly reduced. Furthermore, the diameter of the diamond rope saw is smaller, and a cutting seam of a stone material to be cut is smaller, so that the yield of rough stone block is improved. The manufacturing method of the diamond bead string is beneficial to large-range popularization and utilization of the diamond rope saw.

Description

technical field [0001] The invention discloses a diamond string, a preparation method and a diamond wire saw that does not require a matrix support layer, belongs to the technical field of diamond tool components according to the International Patent Classification (IPC), and particularly relates to a metal powder injection molding process (MIM) ) to produce diamond beads, which are an important component of diamond wire saws or wire saws. Background technique [0002] The diamond wire saw is made of cylindrical diamond beads strung on the steel wire rope, and then each bead is fixed by a rubber-plastic spacer to form a complete diamond wire saw, in which the cylindrical diamond beads are made of a cylindrical matrix layer B and the above working layer A containing diamond particles, see figure 1 shown. This is the general structure of diamond beads at present. [0003] The application of diamond wire saw was started and promoted in 1970. Because its length can be adjuste...

Claims

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Application Information

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IPC IPC(8): B22F5/00B23D61/18B28D1/02B28D1/06
Inventor 丘政发韩继成阮克荣
Owner XIAMEN ZL DIAMOND TECH CO LTD
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