WO2022105331A1 - Integrally-formed tungsten alloy bionic bait body and preparation process therefor - Google Patents

Abstract

Disclosed in the present invention are an integrally-formed tungsten alloy bionic bait body and a preparation process therefor. According to the present invention, the density of a bionic bait body prepared by taking tungsten powder, nickel powder, and iron powder as raw materials is large, the inertia of the bionic bait in water is larger than that of a conventional bionic bait having the same volume (the material is usually lead), and the sedimentation speed of the bionic bait in the water is high, which is more conducive to a user to master a sedimentation point of the bait; in the present invention, a tungsten alloy is used to replace a conventional material (such as lead), which is more environmentally friendly; the tungsten alloy bionic bait provided by the present invention is high in strength and excellent in impact resistance; the preparation process of the present invention is reasonable and scientific; the bionic bait body and a wire lug are integrally formed by using an injection molding process, so that the bionic bait body and the wire lug are not prone to falling off and are firm and stable, and no waste and waste acid and other pollutants are generated; and the step of machining and assembling a stainless steel wire lug does not need to be added subsequently, so that the production efficiency is high, and costs are reduced.

Description

An integrally formed tungsten alloy bionic fishing lure body and its preparation process

INTEGRALLY-FORMED TUNGSTEN ALLOY BIONIC FISH BAIT BODY AND PREPARATION PROCESS THEREOF

Integrally-formed tungsten alloy bionic fish bait body and manufacturing process thereof

technical field

The invention relates to the technical field of fishing gear, in particular to an integrally formed tungsten alloy bionic fish bait body and a preparation process thereof.

Background technique

In recent years, with the improvement of people's living standards, fishing sports have emerged. Among them, the bait includes live bait and bionic bait body. , you can directly perform the throwing action. However, the existing bionic bait body includes a bait body and a wire lug. Most of the existing bait bodies are produced with lead, and the wire lugs are mostly steel wire structures. The lure body and the wire lugs are welded together or bonded by chemical adhesives. The bionic bait has defects such as low production efficiency, unenvironmental protection, and easy falling off of the bait body and the wire ear. Although the invention patent with publication number CN101720745B discloses a production process of a tungsten-based fish sinker, which uses three metal powder mixtures of W, Ni and Fe and polyamide as raw materials, the finished product is made by an injection molding process, but this kind of The wire lug strength of the product prepared by the method is weak, and the dimensional accuracy is not high, which affects the use effect.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an integrally formed tungsten alloy bionic fish bait body and a preparation process thereof, so as to solve the above-mentioned technical problems.

In order to achieve the above object, the technical scheme of the present invention is:

The first aspect, the preparation technology of a kind of integral molding type tungsten alloy bionic fish bait body provided by the invention, comprises the steps:

(1) Weigh the following raw materials by weight: 35-97% of tungsten powder, 2-35% of nickel powder, and balance of iron powder;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 3-20 hours to obtain mixed powder;

(3) Put the obtained mixed powder and molding agent into an internal mixer, heat to 110～130℃ and stir for 0.5～4 hours, then pour out the material, then naturally cool to room temperature and pour it into a crusher for crushing to obtain crushing pellets;

(4) adding the obtained crushed pellets into an injection molding machine, heating to 110-130° C., and obtaining the required product molding blanks by injection molding;

(5) Put the formed blank into a thermal degreasing furnace, heat it up to 800-1000°C in a vacuum or a protective atmosphere, keep sintered for 30-120 minutes, and then naturally cool to room temperature to obtain a degreasing blank;

(6) Put the degreasing blank into a sintering furnace, heat it up to 1300-1520°C in a vacuum or a protective atmosphere, keep sintered for 60-180 minutes, and then naturally cool to room temperature to obtain an integrally formed tungsten alloy bionic fish bait body.

Preferably, the average particle size of the tungsten powder is 1-5 μm.

Preferably, the average particle size of the nickel powder is 1-5 μm.

Preferably, the average particle size of the iron powder is 1-10 μm.

Preferably, the raw materials described in step (1), in terms of weight percentages, include: 70-97% of tungsten powder, 2-20% of nickel powder, and the balance of iron powder.

Preferably, the dosage of the molding agent is 3-10% of the total weight of the mixed powder and the molding agent.

Preferably, the particle size of the crushed powder is not greater than 10 mm.

Preferably, the heating rate of the thermal degreasing furnace is 1-10°C/min.

Preferably, the protective atmosphere is selected from one or more of hydrogen, nitrogen, helium and argon.

Preferably, the heating rate of the sintering furnace is 5-10°C/min.

Preferably, the sintering temperature after the heating of the sintering furnace is 1350-1500°C.

Preferably, the density of the integrally formed tungsten alloy fishing bait is 10-18.6 g/cm ³ .

In the second aspect, a bionic fish bait body provided by the present invention is obtained by the preparation process of the integrated tungsten alloy bionic fish bait described in the first aspect, and the bionic fish bait body is composed of a bionic fish bait body and at least one One-piece structure composed of wire lugs.

Compared with the prior art, the beneficial effects of the present invention are:

(1) the density of the bionic fish bait body made from tungsten alloy is large, the inertia of the bionic fish bait body of the present invention in water is larger than the inertia of the traditional bionic fish bait (material is usually lead) of the same volume, the present invention The settling speed of the bionic fish bait in the water is fast, which is more conducive to the user to grasp the settlement point of the fish bait;

(2) The present invention replaces traditional materials (such as lead, etc.) with tungsten alloy, which is more environmentally friendly;

(3) The tungsten alloy bionic fish bait body provided by the present invention has high strength, especially the wire lugs have excellent impact resistance, high dimensional accuracy and good practical use effect.

(4) The preparation process of the present invention is reasonable and scientific, and the bionic bait body and the wire lug are integrally formed by the injection molding process, which is not easy to fall off, is firm and stable, and has no waste, waste acid and other pollutants. The process of assembling stainless steel wire lugs has high production efficiency.

Description of drawings

1 is a schematic structural diagram of an integrally formed tungsten alloy bionic fish bait body provided by an embodiment of the present invention.

Detailed ways

The specific embodiments of the present invention will be further described below. It should be noted here that the descriptions of these embodiments are used to help the understanding of the present invention, but do not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The preparation process of the one-piece tungsten alloy fishing bait provided by this embodiment includes the following steps:

(1) Weigh the following raw materials by weight percentage: tungsten powder (average particle size is 2.5 μm) 78%, nickel powder (average particle size is 3 μm) 16%, iron powder (average particle size is 4 μm) balance ;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 10 hours to obtain mixed powder;

(3) put the obtained mixed powder and the molding agent into the internal mixer, wherein, the consumption of the molding agent is 6% of the total weight of the mixed powder and the molding agent, heated to 120 ° C and stirred for 1 hour, and then the material Pour out, then naturally cool to room temperature and pour into a crusher to be crushed to obtain pellets with a particle size of less than 10 mm and an irregular shape;

(4) adding the obtained broken pellets into an injection molding machine, heating to 120° C., and obtaining a molding blank after injection molding;

(5) put the formed blank into a thermal degreasing furnace, heat up to 900° C. at a rate of 4° C./min in a hydrogen atmosphere, hold the temperature for 60 minutes, and then naturally cool to room temperature to obtain a degreasing blank;

(6) Put the degreasing billet into the sintering furnace, heat it up to 1450°C at a rate of 8°C/min in a hydrogen atmosphere, keep sintering for 120 minutes, and then naturally cool to room temperature to obtain an integrated tungsten alloy fishing bait (its structure is shown in the figure). 1, an integrally formed structure composed of a bionic bait body 1 and two wire lugs 2).

Example 2

The preparation process of the integrally formed tungsten composite bionic fish bait body provided by this embodiment includes the following steps:

(1) Weigh the following raw materials by weight percentage: tungsten powder (average particle size is 3.5 μm) 93%, nickel powder (average particle size is 7 μm) 7%, iron powder (average particle size is 10 μm) balance ;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 15 hours to obtain mixed powder;

(3) put the obtained mixed powder and the molding agent into the internal mixer, wherein, the consumption of the molding agent is 8% of the total weight of the mixed powder and the molding agent, heated to 110 ° C and stirred for 4 hours, then the material Pour out, then naturally cool to room temperature and pour into a crusher to be crushed to obtain pellets with a particle size of less than 10 mm and an irregular shape;

(4) adding the obtained pellets into an injection molding machine, heating to 110° C., and obtaining a molding blank by injection molding;

(5) putting the forming blank into a thermal degreasing furnace, heating up to 900 ℃ at a rate of 3 ℃/min in a hydrogen atmosphere, degreasing for 120 minutes, and then naturally cooled to room temperature to obtain a degreasing blank;

(6) Put the degreasing blank into the sintering furnace, heat it up to 1420°C at a rate of 6°C/min in a hydrogen atmosphere, keep sintering for 120 minutes, and then naturally cool to room temperature to obtain an integrally formed tungsten alloy bionic fish bait body (its structure As shown in Fig. 1, an integrally formed structure composed of a bionic bait body 1 and two wire lugs 2).

Example 3

The preparation process of the integrally formed tungsten alloy bionic fish bait body provided by this embodiment includes the following steps:

(1) Weigh the following raw materials by weight: 97% of tungsten powder (average particle size is 5 μm), nickel powder (average particle size is 5 μm) 2.1%, iron powder (average particle size is 5 μm) remainder;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 10 hours to obtain mixed powder;

(3) put the obtained mixed powder and the molding agent into the internal mixer, wherein, the consumption of the molding agent is 3.5% of the total weight of the mixed powder and the molding agent, heated to 130 ° C and stirred for 1.5 hours, and then the material Pour out, then naturally cool to room temperature and pour into a crusher to be crushed to obtain pellets with a particle size of less than 10 mm and an irregular shape;

(4) adding the obtained pellets into an injection molding machine, heating to 130° C., and obtaining a molding blank by injection molding;

(5) put the formed blank into a thermal degreasing furnace, heat up to 900° C. at a rate of 4° C./min in a hydrogen atmosphere, keep degreasing for 70 minutes, and then naturally cool to room temperature to obtain a degreasing blank;

(6) Put the degreasing blank into the sintering furnace, heat it up to 1500°C at a rate of 8°C/min in a hydrogen atmosphere, keep sintered for 120 minutes, and then naturally cool to room temperature to obtain an integrally formed tungsten alloy bionic fish bait body (its structure As shown in Fig. 1, an integrally formed structure composed of a bionic bait body 1 and two wire lugs 2).

Example 4

The preparation process of the integrally formed tungsten alloy bionic fish bait body provided by this embodiment includes the following steps:

(1) Weigh the following raw materials by weight: 80% tungsten powder (average particle size is 2.5 μm), nickel powder (average particle size is 3 μm) 14%, iron powder (average particle size is 4 μm) balance ;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 10 hours to obtain mixed powder;

(3) put the obtained mixed powder and the molding agent into the internal mixer, wherein, the consumption of the molding agent is 6% of the total weight of the mixed powder and the molding agent, heated to 120 ° C and stirred for 1 hour, and then the material Pour out, then naturally cool to room temperature and pour into a crusher to be crushed to obtain pellets with a particle size of less than 10 mm and an irregular shape;

(4) adding the obtained pellets into an injection molding machine, heating to 120° C., and obtaining molding blanks by injection molding;

(5) put the formed blank into a thermal degreasing furnace, heat up to 1000° C. at a rate of 10° C./min in a hydrogen atmosphere, keep degreasing for 30 minutes, and then naturally cool to room temperature to obtain a degreasing blank;

(6) Put the degreasing blank into the sintering furnace, heat it up to 1380°C at a rate of 10°C/min in a hydrogen atmosphere, keep sintering for 180 minutes, and then naturally cool to room temperature to obtain an integrated tungsten alloy bionic fish bait body (its structure As shown in Fig. 1, an integrally formed structure composed of a bionic bait body 1 and two wire lugs 2).

Example 5

The preparation process of the integrally formed tungsten alloy bionic fish bait body provided by this embodiment includes the following steps:

(1) Weigh the following raw materials by weight percentage: tungsten powder (average particle size is 2.5 μm) 95%, nickel powder (average particle size is 3 μm) 3.5%, iron powder (average particle size is 4 μm) balance ;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 10 hours to obtain mixed powder;

(3) put the obtained mixed powder and the molding agent into the internal mixer, wherein, the consumption of the molding agent is 4.6% of the total weight of the mixed powder and the molding agent, heated to 120 ° C and stirred for 1 hour, and then the material Pour out, then naturally cool to room temperature and pour into a crusher to be crushed to obtain pellets with a particle size of less than 10 mm and an irregular shape;

(4) adding the obtained pellets into an injection molding machine, heating to 120° C., and obtaining molding blanks by injection molding;

(5) put the formed blank into a thermal degreasing furnace, heat up to 800° C. at a rate of 1° C./min in a hydrogen atmosphere, degreasing for 120 minutes, and then naturally cool to room temperature to obtain a degreasing blank;

(6) Put the degreasing blank into the sintering furnace, heat it up to 1500°C at a rate of 5°C/min in a hydrogen atmosphere, keep sintering for 60 minutes, and then naturally cool to room temperature to obtain an integrally formed tungsten alloy bionic fish bait body (its structure As shown in Fig. 1, an integrally formed structure composed of a bionic bait body 1 and two wire lugs 2).

Example 6

Weigh the following raw materials by weight percentage: 83% tungsten powder (average particle size is 2 μm), nickel powder (average particle size is 4 μm) 12%, iron powder (average particle size is 5 μm) remainder; , nickel powder and iron powder are added in the mixer and mixed for 10 hours to obtain the mixed powder; the obtained mixed powder and the molding agent are put into the internal mixer, wherein, the consumption of the molding agent is the amount of the mixed powder and the molding agent. 6% of the total weight, heated to 120 ° C and stirred for 1 hour, then poured out the material, then cooled to room temperature and poured into a crusher to be crushed to obtain pellets with a particle size of 10 mm or less and irregular shapes; The raw material is added to the injection molding machine, heated to 120 °C, and the molding blank is obtained after injection molding; the molding blank is placed in a thermal degreasing furnace, heated to 900 °C at a rate of 4 °C/min in a hydrogen atmosphere, and degreasing for 60 minutes. Then naturally cool to room temperature to obtain degreasing blanks; put the degreasing blanks into a sintering furnace, heat up to 1450 °C at a rate of 8 °C/min in a hydrogen atmosphere, keep sintered for 120 minutes, and then naturally cool to room temperature to obtain an integrated tungsten alloy bionic Fishing bait body (its structure is shown in Figure 1, an integrally formed structure composed of a bionic fishing bait body 1 and two wire lugs 2).

Example 7

Weigh the following raw materials by weight: 60% tungsten powder (average particle size is 2 μm), nickel powder (average particle size is 4 μm) 35%, iron powder (average particle size is 5 μm) remainder; , nickel powder and iron powder are added in the mixer and mixed for 10 hours to obtain the mixed powder; the obtained mixed powder and the molding agent are put into the internal mixer, wherein, the consumption of the molding agent is the amount of the mixed powder and the molding agent. 6% of the total weight, heated to 120 ° C and stirred for 1 hour, then poured out the material, then cooled to room temperature and poured into a crusher to be crushed to obtain pellets with a particle size of 10 mm or less and irregular shapes; The raw material is added to the injection molding machine, heated to 120 °C, and the molding blank is obtained after injection molding; the molding blank is placed in a thermal degreasing furnace, heated to 900 °C at a rate of 4 °C/min in a hydrogen atmosphere, and degreasing for 60 minutes. Then naturally cool to room temperature to obtain degreasing blanks; put the degreasing blanks into a sintering furnace, heat up to 1450 °C at a rate of 8 °C/min in a hydrogen atmosphere, keep sintered for 120 minutes, and then naturally cool to room temperature to obtain an integrated tungsten alloy bionic Fishing bait body (its structure is shown in Figure 1, an integrally formed structure composed of a bionic fishing bait body 1 and two wire lugs 2).

Example 8

Weigh the following raw materials by weight percentage: tungsten powder (average particle size is 2 μm) 35%, nickel powder (average particle size is 4 μm) 35%, iron powder (average particle size is 5 μm) remainder; , nickel powder and iron powder are added in the mixer and mixed for 10 hours to obtain the mixed powder; the obtained mixed powder and the molding agent are put into the internal mixer, wherein, the consumption of the molding agent is the amount of the mixed powder and the molding agent. 6% of the total weight, heated to 120 ° C and stirred for 1 hour, then poured out the material, then cooled to room temperature and poured into a crusher to be crushed to obtain pellets with a particle size of 10 mm or less and irregular shapes; The raw material is added to the injection molding machine, heated to 120 °C, and the molding blank is obtained after injection molding; the molding blank is placed in a thermal degreasing furnace, heated to 900 °C at a rate of 4 °C/min in a hydrogen atmosphere, and degreasing for 60 minutes. Then naturally cool to room temperature to obtain degreasing blanks; put the degreasing blanks into a sintering furnace, heat up to 1450 °C at a rate of 8 °C/min in a hydrogen atmosphere, keep sintered for 120 minutes, and then naturally cool to room temperature to obtain an integrated tungsten alloy bionic Fishing bait body (its structure is shown in Figure 1, an integrally formed structure composed of a bionic fishing bait body 1 and two wire lugs 2).

Example 9

The preparation process of the integrally formed tungsten alloy fishing bait body provided by this embodiment includes the following steps:

(1) Weigh the following raw materials by weight percentage: tungsten powder (average particle size is 2.5 μm) 78%, nickel powder (average particle size is 3 μm) 16%, iron powder (average particle size is 4 μm) balance ;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 3 hours to obtain mixed powder;

(3) put the obtained mixed powder and the molding agent into the internal mixer, wherein, the consumption of the molding agent is 6% of the total weight of the mixed powder and the molding agent, heated to 110 ° C and stirred for 4 hours, and then the material was Pour out, then naturally cool to room temperature and pour into a crusher to be crushed to obtain pellets with a particle size of less than 10 mm and an irregular shape;

(4) adding the obtained crushed pellets into an injection molding machine, heating to 110° C., and obtaining a molding blank after injection molding;

(5) Put the formed blank into a thermal degreasing furnace, heat up to 800° C. at a rate of 1° C./min in a hydrogen atmosphere, keep the temperature for degreasing for 60 minutes, and then naturally cool to room temperature to obtain a degreasing blank;

(6) Put the degreasing blank into the sintering furnace, heat it up to 1300°C at a rate of 5°C/min in a hydrogen atmosphere, keep sintering for 60 minutes, and then naturally cool to room temperature to obtain an integrally formed tungsten alloy bionic fish bait body (its structure As shown in Fig. 1, an integrally formed structure composed of a bionic bait body 1 and two wire lugs 2).

Example 10

The preparation process of the integrally formed tungsten alloy fishing bait body provided by this embodiment includes the following steps:

(1) Weigh the following raw materials by weight percentage: tungsten powder (average particle size is 2.5 μm) 78%, nickel powder (average particle size is 3 μm) 16%, iron powder (average particle size is 4 μm) balance ;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 20 hours to obtain mixed powder;

(3) put the obtained mixed powder and the molding agent into the internal mixer, wherein, the consumption of the molding agent is 6% of the total weight of the mixed powder and the molding agent, heated to 130 ° C and stirred for 0.5 hours, and then the material Pour out, then naturally cool to room temperature and pour into a crusher to be crushed to obtain pellets with a particle size of less than 10 mm and an irregular shape;

(4) adding the obtained crushed pellets into an injection molding machine, heating to 130° C., and obtaining a molding blank after injection molding;

(5) put the formed blank into a thermal degreasing furnace, heat up to 1000 ℃ at a rate of 5 ℃/min in a hydrogen atmosphere, keep degreasing for 60 minutes, and then naturally cool to room temperature to obtain a degreasing blank;

(6) Put the degreasing billet into the sintering furnace, heat it up to 1380°C at a rate of 10°C/min in a hydrogen atmosphere, keep sintering for 120 minutes, and then naturally cool to room temperature to obtain an integrated tungsten alloy bionic fish bait body (its structure As shown in Fig. 1, an integrally formed structure composed of a bionic bait body 1 and two wire lugs 2).

Comparative Example 1

The preparation process of the one-piece tungsten alloy fishing bait body provided by this comparative example includes the following steps:

(1) Weigh the following raw materials by weight percentage: tungsten powder (average particle size is 2.5 μm) 78%, nickel powder (average particle size is 3 μm) 16%, iron powder (average particle size is 4 μm) balance ;

(2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 10 hours to obtain mixed powder;

(3) put the obtained mixed powder and the molding agent into the internal mixer, wherein, the consumption of the molding agent is 6% of the total weight of the mixed powder and the molding agent, heated to 120 ° C and stirred for 1 hour, and then the material Pour out, then naturally cool to room temperature and pour into a crusher to be crushed to obtain pellets with a particle size of less than 10 mm and an irregular shape;

(4) adding the obtained pellets into an injection molding machine, heating to 120° C., and obtaining molding blanks by injection molding;

(5) Put the formed blank into a degreasing solvent for degreasing, then put it into a hot degreasing furnace, heat it up to 600° C. at a rate of 4° C./min in a hydrogen atmosphere, keep degreasing for 5 hours, and then naturally cool to room temperature to obtain a degreasing blank. ;

(6) Put the degreasing blank into a sintering furnace, heat it up to 1400°C at a rate of 8°C/min in a hydrogen atmosphere, keep sintered for 120 minutes, and then naturally cool to room temperature to obtain an integrated tungsten alloy bionic fish bait body.

Comparative Example 2

The finished product was prepared according to Example 1 of the invention patent with publication number CN101720745B.

In order to further illustrate the beneficial effects of the present invention, the accuracy of the size and weight of the products obtained in the above embodiments and comparative examples of the present invention are tested, and the test results are shown in Table 1.

Table 1 Accuracy test results

serial number	Sample source	Length Precision -/+%	width precision -/+%	Thickness Accuracy -/+%	Weight Accuracy -/+%
1	Example 1	1.45	1.39	1.19	2.78
2	Example 2	1.39	1.19	1.15	2.46
3	Example 3	1.29	1.10	1.09	1.96
4	Example 4	1.39	1.30	1.22	2.82
5	Example 5	1.46	1.38	1.11	2.15
6	Example 6	1.29	1.18	1.13	2.01
7	Example 7	1.35	1.30	1.19	2.13
8	Example 8	1.42	1.39	1.26	2.76
9	Example 9	1.32	1.27	1.18	2.55
10	Example 10	1.45	1.35	1.25	2.81
11	Comparative Example 1	2.02	1.59	1.55	8.2
12	Comparative Example 2	2.13	1.65	1.60	5.76

In fact, from the requirements of the use effect, it is generally considered that the dimensional accuracy of the product is controlled within -/+1.5%, and the weight accuracy is controlled within -/+3.0% to be excellent, and the use effect is good.

In order to further illustrate the beneficial effects of the present invention, the present invention has also carried out the following tests on the products obtained from the above-mentioned embodiments and comparative examples:

(1) Density test: use a two-dimensional projector for size test, and then use a precision balance for density test;

(2) Drop test: hang the bionic bait body on the fishing line, and drop it 50 times from a height of 10 meters on the cement field;

(3) Tensile strength test: use a claw hammer tensile tester, fix the upper end of the bionic fish bait body, and apply a tensile force of 600N and 1000N to the lower end of the bionic fish bait body to test the bionic fish bait. The tensile strength of the body product.

The results of the above density test, drop test, and tensile strength test are shown in Table 2.

Table 2 Results of density test, drop test and tensile strength test

The embodiments of the present invention have been described above in detail, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and alterations can be made to these embodiments, which still fall within the protection scope of the present invention.

Claims (10)

1. A preparation process of an integrally formed tungsten alloy bionic fish bait body, characterized in that it comprises the following steps:

   (1) Take by weighing the following raw materials by weight: 35-97% of tungsten powder, 2-35% of nickel powder, and balance of iron powder;

   (2) adding tungsten powder, nickel powder and iron powder into the mixer and mixing for 3-20 hours to obtain mixed powder;

   (3) Put the obtained mixed powder and molding agent into an internal mixer, heat to 110-130 ° C and stir for 0.5-4 hours, then pour out the material, then naturally cool to room temperature and pour it into a crusher for crushing to obtain crushing pellets;

   (4) adding the obtained crushed pellets into an injection molding machine, heating to 110-130° C., and obtaining a molding blank of the required product shape by injection molding;

   (5) Put the formed blank into a thermal degreasing furnace, heat it up to 800-1000°C under vacuum or protective atmosphere, keep sintered for 30-120 minutes, and then naturally cool to room temperature to obtain a degreasing blank;

   (6) Put the degreasing blank into a sintering furnace, heat it up to 1300-1520°C under vacuum or protective atmosphere, keep sintered for 60-180 minutes, and then naturally cool to room temperature to obtain an integrally formed tungsten alloy bionic fish bait body.
2. The process for preparing an integrally formed tungsten alloy bionic fish bait body according to claim 1, wherein the average particle size of the tungsten powder is 1-5 μm; the average particle size of the nickel powder is 1-5 μm; The average particle size of the iron powder is 1-10 μm.
3. The process for preparing an integrally formed tungsten alloy bionic fish bait body according to claim 1, wherein the raw materials in step (1), by weight percentage, include: 70-97% of tungsten powder, 2 ~20%, the balance of iron powder.
4. The process for preparing an integrally formed tungsten alloy bionic fish bait body according to claim 1, wherein the amount of the molding agent is 3-10% of the total weight of the mixed powder and the molding agent.
5. The process for preparing an integrally formed tungsten alloy bionic fish bait body according to claim 1, wherein the particle size of the broken pellets is not greater than 10 mm.
6. The process for preparing an integrally formed tungsten alloy bionic fish bait body according to claim 1, wherein the heating rate of the thermal degreasing furnace is 1-10°C/min.
7. The process for preparing an integrally formed tungsten alloy bionic fish bait body according to claim 1, wherein the protective atmosphere described in steps (5)-(6) is selected from hydrogen, nitrogen, helium and argon one or more of.
8. The process for preparing an integrally formed tungsten alloy bionic fish bait body according to claim 1, wherein the heating rate of the sintering furnace is 5-10 °C/min, and the sintering temperature after the heating of the sintering furnace is 1350 °C ~1500℃.
9. The preparation process of the integrally formed tungsten alloy bionic fish bait body according to claim 1, wherein the density of the integrally formed tungsten alloy bionic fish bait body is 10-18.6 g/cm ³ .
10. A bionic fish bait body is characterized in that, it is obtained by adopting the preparation process of the integrally formed tungsten alloy bionic fish bait body according to claim 1, and the bionic fish bait body is composed of a bionic fish bait body and at least one thread. The one-piece structure of the ear.

Images