阅读说明：本技术 一种可舍弃环保陶瓷复合材料渔坠的制备方法 (Preparation method of disposable environment-friendly ceramic composite fishing sinker ) 是由 朱博文 朱艳雯 王雅萍 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种可舍弃环保陶瓷复合材料渔坠的制备方法,本发明属于渔坠技术领域,本发明是碳化钨金属陶瓷主体材料,即由碳化钨与镍合金为原料制作的复合材料渔坠,作为粘结剂的为镍合金,复合材料渔坠密度大,不会对水质构成安全卫生威胁,在硬度方面,比铅更硬,铅金属渔坠比较软,在有石块的水底拖拽钓组,钓组在水底滑行时,铅制的铅坠容易出现刮擦和凹陷,作舍弃坠有害水体,本发明陶瓷坠声音则比较清脆,具有特别优良的耐磨和耐蚀抗力,飞行距离远、更稳定,冬季中鱼的概率更高一些,可舍弃环保陶瓷复合材料渔坠体积小,质量重,飞行距离远、下沉速度快,获得鱼信、在水底的感度都要更好一些。(The invention discloses a method for preparing a fishing weight made of environment-friendly ceramic composite material capable of being abandoned, which belongs to the technical field of fishing weights, and the invention is a tungsten carbide metal ceramic main body material, namely the fishing weight made of the composite material by taking tungsten carbide and nickel alloy as raw materials, the nickel alloy is taken as a binder, the density of the fishing weight made of the composite material is high, the fishing weight does not form safe and sanitary threats to water quality, the fishing weight is harder than lead and softer than the fishing weight made of lead in the aspect of hardness, a fishing group is dragged under water with stones, when the fishing group slides under the water, the lead weight made of lead is easy to scratch and dent, and is used as a harmful water body of the abandoned weight, the sound of the ceramic weight is crisp, the ceramic weight has particularly excellent wear resistance and corrosion resistance, the flying distance is far and more stable, the probability of fish in winter is higher, the fishing weight made of environment-friendly ceramic composite material capable of being abandoned is small in volume, heavy in mass, the flying distance is far, the sinking speed is high, the sensitivity of the fish letter to water bottom is better.)

1. A preparation method of a disposable environment-friendly ceramic composite fishing pendant is characterized by comprising the following steps: (1) firstly, uniformly mixing bonding metal and WC powder, adding an organic binder, preparing into paste, and molding and pressing; (2) and (3) heating the falling blank to remove the glue, transferring the falling blank into a graphite mold at the same temperature, and sintering in a nitrogen atmosphere at the sintering pressure of 10-14 MPa, the sintering temperature of 1460-1500 ℃ and the sintering time of 40-50 min to obtain the disposable environment-friendly ceramic composite fishing weight.

2. The method for preparing a disposable environmental-friendly ceramic composite fishing sinker according to claim 1, wherein the bonding metal in step (1) is Ni-based self-fluxing alloy Ni-02, and the bonding metal comprises 0.3-0.5 wt% of C, 2.0-3.0 wt% of B, 3.5-5.5 wt% of Si, 11-15 wt% of Cr, 10wt% of Fe, and the balance of Ni, wherein the WC powder is electrolytic WC with WC content of 99.3-99.9%.

3. The method for preparing the disposable environment-friendly ceramic composite fishing pendant according to claim 1, wherein the WC powder in the step (1) accounts for 45-50% of the mass fraction of the paste.

4. The method for preparing the disposable environment-friendly ceramic composite fishing sinker according to claim 1, wherein the organic binder in the step (1) is a polyvinyl alcohol solution with a mass fraction of 20-25%, and the polyvinyl alcohol has an average polymerization degree of 1650-1850 and an alcoholysis degree of 96-98.

5. The method for preparing the disposable environment-friendly ceramic composite fishing sinker according to claim 1, wherein the bonding metal in the step (1) accounts for 35-40% of the mass fraction of the paste.

6. The method for preparing the disposable environment-friendly ceramic composite fishing pendant according to claim 1, wherein the pendant blank is embedded in the alumina powder forged at 1200-1300 ℃ in the heating and glue removing process in the step (2), the temperature is raised to 100 ℃ at a heating rate of 50 ℃/h for 0.5-1 h, the temperature is raised to 200-350 ℃ at a heating rate of 100 ℃/h, the temperature is raised to 35-40 ℃/h, and the temperature is raised to 400 ℃ at 400 ℃ for 3-4 h.

Technical Field

The invention belongs to the technical field of fishing pendants, and particularly relates to a preparation method of a disposable environment-friendly ceramic composite fishing pendant.

Background

Discarding the pendant, as the name implies, is the pendant ready for disposal. When fishing, a section of line which is thinner than the main line is connected below the main line, and then the weight is tied on the thin line, the thinner the section of line, the better the weight is, so that the weight can be driven continuously. If the weight is hung by an obstacle under water and pulls the main line, the hook, the rod and the like are protected from being lost as the pull line is thin and is broken once pulled. Generally, fishing is carried out at places with riprap at the water bottom or many stone seams of reservoir dams, and the pendants are easily clamped by the stone seams. If the weight is tied on the main line, the weight is likely to be pulled out by pulling the main line without pulling, and the main line is deformed by pulling, which affects the strength of the fishing line and makes it a broken line, and even more likely to break the main line, thus the loss is larger. If the throw-away sinker is used, the loss can be greatly reduced. It is also an empirical talk about the choice of fishing points in natural waters such as reservoirs. For example, chinese patent CN201610667483X discloses that the fish catch-up preventing abandon pendant can attract fish to gather and avoid eating in natural water cities such as reservoirs and rivers where there are riprap, branches and sundries on the water bottom. The water bottom of the Ma plain is not hung, but can be eaten without food, is not beneficial to concealment, and can not store fish, especially big fish. The mess of the water bottom brings trouble to the fisher for hooking, but the problem cannot be solved. The method of abandoning the pendant is adopted, fishhooks are directly sent into disordered objects, and hooks are hooked to hook the fishhooks, and the pendant is hung to hang the pendant. Although there is a fear of breakage of the hook, it is always better than the smooth fishing without any gain in balance. The dropping is just to use a small section of thin wire to tie the dropping independently, once the dropping is hung, the wire can be pulled off with a little force, and the main wire is protected by losing one lead drop. Therefore, the fishing proverb says: the fishing is messy and smooth, and the lead is usually suitable for fishing weight balance weight, usually a lead weight. This is because lead has a high density in metal, a large mass when it is small in volume, and good plasticity. Lead is a toxic metal and needs to be used properly. Enough lead weights are left in a water body within a certain small range, and when indexes such as pH value in water are changed, the lead weights are dissolved, so that the water quality is possibly threatened, and a preparation method capable of abandoning the environment-friendly ceramic composite material fishing weight is urgently needed to be developed by technical personnel in the field so as to meet the requirements of the existing application market and performance.

Disclosure of Invention

In view of the above, the invention provides a preparation method of a disposable environment-friendly ceramic composite fishing pendant.

A preparation method of a disposable environment-friendly ceramic composite fishing pendant comprises the following steps: (1) firstly, uniformly mixing bonding metal and WC powder, adding an organic binder, preparing into paste, and molding and pressing; (2) and (3) heating the falling blank to remove the glue, transferring the falling blank into a graphite mold at the same temperature, and sintering in a nitrogen atmosphere at the sintering pressure of 10-14 MPa, the sintering temperature of 1460-1500 ℃ and the sintering time of 40-50 min to obtain the disposable environment-friendly ceramic composite fishing weight.

Cermets are structural materials consisting of a ceramic hard phase and a metal or alloy binder phase.

Furthermore, the bonding metal is Ni-based self-fluxing alloy Ni-02, which comprises 0.3-0.5 wt% of C, 2.0-3.0 wt% of B, 5-5.5 wt% of Si, 11-15 wt% of Cr, 10wt% of Fe and the balance of Ni, wherein WC powder is electrolytic WC with the WC content of 99.3-99.9%. The electrolysis method is also called electrochemical method and selective electrochemical dissolution method.

Further, the WC powder accounts for 45-50% of the mass fraction of the paste.

The metal ceramic has the advantages of metal and ceramic, and has the characteristics of high hardness, wear resistance, metal toughness, high thermal conductivity, good thermal stability, high temperature resistance, corrosion resistance, wear resistance and the like.

Further, the organic binder in the first step is a polyvinyl alcohol solution with a mass fraction of 20-25%, and the polyvinyl alcohol is polyvinyl alcohol with an average polymerization degree of 1650-1850 and an alcoholysis degree of 96-98.

Furthermore, the bonding metal accounts for 35-40% of the mass fraction of the paste.

Further, the heating and glue removing process buries the falling blank in the aluminum oxide powder forged at 1200-1300 ℃, the temperature is raised to 100 ℃, the heating rate is 50 ℃/h, the heat is preserved for 0.5-1 h, the heating rate is 100 ℃/h, the temperature is raised to 200-350 ℃, the heating rate is 35-40 ℃/h, the temperature is raised to 400 ℃, and the heat is preserved for 3-4 h when the temperature is 400 ℃.

The invention has the beneficial effects that:

the fishing weight made of the disposable environment-friendly ceramic composite material is metal ceramic, the non-homogeneous composite material is composed of ceramic and bonding metal, the ceramic and the bonding metal are ground and mixed uniformly, and the mixture is sintered in an inert atmosphere after being formed, so that the fishing weight made of the disposable environment-friendly ceramic composite material can be prepared. The invention adopts organic adhesive, which is changed from solid state to liquid state or gas state and discharged from the green body during calcination. The organic binder is melted, decomposed and volatilized in a large amount in the green body, so that the green body is deformed and cracked, and therefore, glue is required to be discharged, conditions are created for next firing, the green body obtains certain mechanical strength, and the reduction effect of the binder during firing is avoided. The alumina is calcined to ensure that the green body is heated uniformly, the discharge of the adhesive is uniform and consistent, and the deformation and cracking can be prevented.

Compared with the prior art, the invention has the following advantages:

the present invention relates to a fishing pendant made of composite material made up by using tungsten carbide and nickel alloy as raw material and using cobalt, nickel, tungsten and their alloys as main metal base body as adhesive. According to the weight percentage, the content of carbide is 45-88%, the density of tungsten carbide cermet is high, lead is a toxic metal and needs to be used properly, enough lead drops are left in a water body within a certain small range, when indexes such as the pH value in water are changed, the lead drops are dissolved, the water quality is possibly threatened, the lead drops are harder than lead and softer than lead in the aspect of hardness, a fishing group is dragged at the water bottom with stones, and when the fishing group slides at the water bottom, the lead drops made of lead are easy to scrape and dent. Because the material is softer, the knocking sound of lead at the water bottom is blunter, while the ceramic pendant sound of the invention is crisper, has particularly excellent wear resistance and corrosion resistance, has long flying distance and is more stable, and the probability of fish is naturally higher in winter.

Detailed Description

Example 1

Firstly, one kind canThe preparation method of the abandoned environment-friendly ceramic composite material fishing sinker comprises the following steps: (1) uniformly mixing bonding metal and WC powder, adding an organic binder, wherein the organic binder is a polyvinyl alcohol solution with the mass fraction of 25%, the polyvinyl alcohol is polyvinyl alcohol with the average polymerization degree of 1850 and the alcoholysis degree of 98, preparing a paste, the WC powder accounts for 50% of the mass fraction of the paste, molding falling blanks, the bonding metal is Ni-based self-fluxing alloy Ni-02, and the bonding metal is electrolytic WC with the WC content of 99.9% and comes from the default resistant KN350, and the components are C0.5wt%, B3.0wt%, Si5.5wt%, Cr15wt%, Fe10wt% and the balance Ni; (2) and embedding the falling blank in the alumina powder forged at 1300 ℃ by a heating and glue removing process, starting to heat to 100 ℃, at a heating rate of 50 ℃/h, keeping the temperature for 1h, at a heating rate of 100 ℃/h, to heat to 350 ℃, at a heating rate of 40 ℃/h, to heat to 400 ℃, and at 400 ℃, keeping the temperature for 4h, heating the falling blank to remove glue, transferring the falling blank into a graphite mold at the same temperature, sintering the falling blank in a nitrogen atmosphere, wherein the sintering pressure is 14MPa, the sintering temperature is 1500 ℃, and the sintering time is 50min, so as to obtain the disposable environment-friendly ceramic composite material fishing weight. The surface is smooth and has no barbs, and the density is 13.2g/cm³The bullet streamline resistance is high, 26mm, the diameter is 13mm, and 24.4 g.

Example 2

The method for preparing the disposable environment-friendly ceramic composite fishing pendant comprises the following steps: (1) firstly, uniformly mixing bonding metal and WC powder, then adding an organic binder, wherein the organic binder is a polyvinyl alcohol solution with the mass fraction of 20%, the polyvinyl alcohol is polyvinyl alcohol with the average polymerization degree of 1650 and the alcoholysis degree of 96, preparing a paste, the WC powder accounts for 45% of the mass fraction of the paste, molding and falling a blank, the bonding metal is Ni-based self-fluxing alloy Ni-02, and the bonding metal is electrolytic WC with the WC content of 99.3% and comprises the components of C0.3wt%, B2.0wt%, Si3.5wt%, Cr11wt%, Fe10wt% and the balance of Ni. (ii) a (2) Embedding the falling blank in the alumina powder forged at 1200 ℃, starting to heat to 100 ℃, with the heating rate of 50 ℃/h, keeping the temperature for 0.5h, with the heating rate of 100 ℃/h, heating to 200 ℃, with the heating rate of 35 ℃/h to 400 ℃, keeping the temperature for 3h at 400 ℃, after heating and binder removal of the falling blank, transferring the falling blank into a graphite mold at the same temperature for sintering under nitrogen atmosphere, wherein the sintering pressure is10MPa, the sintering temperature is 1460 ℃, and the sintering time is 40min, so as to obtain the disposable environment-friendly ceramic composite material fishing weight. The surface is smooth and has no barbs, and the density is 12.6g/cm³ _、The bullet streamline resistance is high 28mm, the diameter is 15mm, and the weight is 33.3 g.

Note: refer to GB/T25995-2010 fine ceramic density and apparent porosity test methods.