Interlayer carcass material and preparation method of diamond tool bit

Abstract

The invention discloses an interlayer carcass material and a preparation method of a diamond tool bit, and belongs to the field of stone cutting. The interlayer carcass material comprises, in percentage by mass, 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of ALSi. According to the preparation method, the interlayer carcass material, a first working layer mixture and a second working layer mixture are respectively loaded into corresponding hoppers; and the first working layer mixture is fed into a mold cavity, then the interlayer carcass material and the second working layer mixture are fedinto the mold cavity respectively and repeatedly, the pre-pressure every time is 50-100KG / cm<2> higher than the last pre-pressure, demolding and sintering are conducted, and the needed diamond tool bit is obtained. The interlayer carcass material has the advantages that coarse-grained elemental Fe powder is adopted, the powder is small in specific surface area and higher in oxidation resistance,and when the powder is applied to a multi-layer full-automatic cold press, the labor and material cost can be greatly reduced while the efficiency is improved, good sintering performance is kept, goodsintering density is obtained, good strength is obtained, and the material can effectively adapt to the abrasion speed of a tool bit working layer.

Description

technical field

[0001] The invention relates to the field of stone cutting tools, in particular to a method for preparing an interlayer carcass material and a diamond cutter head. Background technique

[0002] The traditional diamond cutter head is composed of a working layer and an iron sheet interlayer. The production process is to manually superimpose the working layer and the iron sheet into a graphite mold, and then sinter it. Although the cutter head produced by this process has a sharpness It has made great progress, but it needs to invest a lot of labor costs. With the fierce competition of products and the increase of labor costs, it has promoted the automation and intelligent development of equipment, and multi-layer automatic cold presses have also emerged at the historic moment. It It can automatically realize multi-layer cold pressing, reduce the cost of cold pressing and the cost of billet loading and sintering in the later stage, but the traditional iron sheet...

Examples

preparation example Construction

[0030] The present invention also relates to a preparation method of a diamond cutter head, comprising the steps of:

[0031] Step 1, prepare the interlayer carcass material, weigh 85-65% Fe, 8-15% Zn, 5-20% Cu and 2-5% ALSi powder by mass percentage, and stir evenly for 45-90 minutes to obtain a uniform mixture Interlayer carcass material;

[0032] Step 2, in the multi-layer automatic cold press, the interlayer carcass material, the first working layer mixture, and the second working layer mixture are respectively loaded into corresponding hoppers;

[0033] Step 3: Send the mixture of the first working layer into the mold cavity, using 200-400KG / cm 2 The first pressure is pre-pressed, and the pre-pressed first green body is left in the mold cavity, staying in a suitable position, and the cavity filled with the interlayer carcass material is reserved above the first green body;

[0034] Step 4: Feed the interlayer carcass material into the mold cavity, fill up the cavity res...

Embodiment 1

[0043] The preparation method of diamond cutter head in the present embodiment, comprises the steps:

[0044] Step 1, prepare the interlayer carcass material, weigh 85% Fe, 8% Zn, 5% Cu and 2% ALSi powder by mass percentage, the powder particle size of the interlayer carcass material is 100-500 mesh, the interlayer carcass The oxygen content of the material is 1500-3500PPM, and the three-dimensional mixer is used to stir evenly for 45-90 minutes to obtain a uniformly mixed interlayer carcass material;

[0045] Step 2, in the multi-layer automatic cold press, the interlayer carcass material, the first working layer mixture, and the second working layer mixture are respectively loaded into corresponding hoppers;

[0046] Step 3: Send the mixture of the first working layer into the mold cavity, using 200-400KG / cm 2 The first pressure is pre-pressed, and the pre-pressed first green body is left in the mold cavity, staying in a suitable position, and the cavity filled with the inter...

Embodiment 2

[0053] The preparation method of diamond cutter head in the present embodiment, comprises the steps:

[0054] Step 1, prepare the interlayer carcass material, weigh 70% Fe, 15% Zn, 10% Cu and 5% ALSi powder by mass percentage, the powder particle size of the interlayer carcass material is 100-500 mesh, the interlayer carcass The oxygen content of the material is 1500-3500PPM, and the three-dimensional mixer is used to stir evenly for 45-90 minutes to obtain a uniformly mixed interlayer carcass material;

[0055] Step 2, in the multi-layer automatic cold press, the interlayer carcass material, the first working layer mixture, and the second working layer mixture are respectively loaded into corresponding hoppers;

[0056] Step 3: Send the mixture of the first working layer into the mold cavity, using 200-400KG / cm 2 The first pressure is pre-pressed, and the pre-pressed first green body is left in the mold cavity, staying in a suitable position, and the cavity filled with the i...

technical field

[0001] The invention relates to the field of stone cutting tools, in particular to a method for preparing an interlayer carcass material and a diamond cutter head. Background technique

[0002] The traditional diamond cutter head is composed of a working layer and an iron sheet interlayer. The production process is to manually superimpose the working layer and the iron sheet into a graphite mold, and then sinter it. Although the cutter head produced by this process has a sharpness It has made great progress, but it needs to invest a lot of labor costs. With the fierce competition of products and the increase of labor costs, it has promoted the automation and intelligent development of equipment, and multi-layer automatic cold presses have also emerged at the historic moment. It It can automatically realize multi-layer cold pressing, reduce the cost of cold pressing and the cost of billet loading and sintering in the later stage, but the traditional iron sheet...

Examples

preparation example Construction

[0030] The present invention also relates to a preparation method of a diamond cutter head, comprising the steps of:

[0031] Step 1, prepare the interlayer carcass material, weigh 85-65% Fe, 8-15% Zn, 5-20% Cu and 2-5% ALSi powder by mass percentage, and stir evenly for 45-90 minutes to obtain a uniform mixture Interlayer carcass material;

[0032] Step 2, in the multi-layer automatic cold press, the interlayer carcass material, the first working layer mixture, and the second working layer mixture are respectively loaded into corresponding hoppers;

[0033] Step 3: Send the mixture of the first working layer into the mold cavity, using 200-400KG / cm 2 The first pressure is pre-pressed, and the pre-pressed first green body is left in the mold cavity, staying in a suitable position, and the cavity filled with the interlayer carcass material is reserved above the first green body;

[0034] Step 4: Feed the interlayer carcass material into the mold cavity, fill up the cavity res...

Embodiment 1

[0043] The preparation method of diamond cutter head in the present embodiment, comprises the steps:

[0044] Step 1, prepare the interlayer carcass material, weigh 85% Fe, 8% Zn, 5% Cu and 2% ALSi powder by mass percentage, the powder particle size of the interlayer carcass material is 100-500 mesh, the interlayer carcass The oxygen content of the material is 1500-3500PPM, and the three-dimensional mixer is used to stir evenly for 45-90 minutes to obtain a uniformly mixed interlayer carcass material;

[0045] Step 2, in the multi-layer automatic cold press, the interlayer carcass material, the first working layer mixture, and the second working layer mixture are respectively loaded into corresponding hoppers;

[0046] Step 3: Send the mixture of the first working layer into the mold cavity, using 200-400KG / cm 2 The first pressure is pre-pressed, and the pre-pressed first green body is left in the mold cavity, staying in a suitable position, and the cavity filled with the inter...

Embodiment 2

[0053] The preparation method of diamond cutter head in the present embodiment, comprises the steps:

[0054] Step 1, prepare the interlayer carcass material, weigh 70% Fe, 15% Zn, 10% Cu and 5% ALSi powder by mass percentage, the powder particle size of the interlayer carcass material is 100-500 mesh, the interlayer carcass The oxygen content of the material is 1500-3500PPM, and the three-dimensional mixer is used to stir evenly for 45-90 minutes to obtain a uniformly mixed interlayer carcass material;

[0055] Step 2, in the multi-layer automatic cold press, the interlayer carcass material, the first working layer mixture, and the second working layer mixture are respectively loaded into corresponding hoppers;

[0056] Step 3: Send the mixture of the first working layer into the mold cavity, using 200-400KG / cm 2 The first pressure is pre-pressed, and the pre-pressed first green body is left in the mold cavity, staying in a suitable position, and the cavity filled with the i...

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