阅读说明：本技术 一种有色金属合金铸件的生产工艺 (Production process of non-ferrous metal alloy casting ) 是由 黄维勇 苏芙蓉 洪朝庆 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种有色金属合金铸件的生产工艺,涉及合金铸件加工技术领域,包括如下步骤：(1)熔炼成液、(2)除杂处理、(3)模具处理、(4)浇铸处理、(5)压铸成型。本发明生产工艺能够避免铸件内部产生破坏性应力集中的现象,保证了铸件各处组织的均匀性,从而很好的保证了铸件的强度等品质；(3)本发明方法整体工艺简单,易于推广应用,整体的生产成本低,能耗小,且合格率高。(The invention discloses a production process of a non-ferrous metal alloy casting, which relates to the technical field of alloy casting processing and comprises the following steps: (1) smelting into liquid, (2) impurity removal treatment, (3) mould treatment, (4) casting treatment, and (5) die-casting forming. The production process can avoid the phenomenon of destructive stress concentration in the casting, and ensure the uniformity of tissues at each part of the casting, thereby well ensuring the quality of the casting, such as strength and the like; (3) the method has the advantages of simple overall process, easy popularization and application, low overall production cost, low energy consumption and high qualification rate.)

1. A production process of a non-ferrous metal alloy casting is characterized by comprising the following steps:

(1) smelting into liquid:

smelting non-ferrous metal alloy into non-ferrous metal alloy liquid for later use;

(2) impurity removal treatment:

carrying out impurity removal treatment on the non-ferrous metal alloy liquid obtained in the step (1);

(3) treating the die:

spraying a special casting agent on the inner cavity of the mold, and airing for later use;

(4) casting treatment:

pouring the non-ferrous metal alloy liquid treated in the step (2) into the mould treated in the step (3) to obtain a cast alloy ingot for later use;

(5) die-casting and forming:

and (5) putting the casting alloy ingot obtained in the step (4) into a die-casting die for die-casting treatment, and obtaining a finished product casting after the die-casting treatment is finished.

2. A process for producing a non-ferrous metal alloy casting as claimed in claim 1, wherein the impurity removal treatment in step (2) is specifically performed 3-4 times with fluorite.

3. A process for producing a non-ferrous metal alloy casting as claimed in claim 1 wherein the casting agent in step (3) is made from the following materials in parts by weight:

50-55 parts of yttrium oxide micro powder, 25-30 parts of yttrium sol, 0.5-1 part of butanediol, 1-1.5 parts of ethyl acetate, 1-2 parts of surfactant and 10-15 parts of nano powder.

4. A process for producing a non-ferrous metal alloy casting as claimed in claim 3, wherein the particle size of the yttrium oxide micropowder is 300 mesh.

5. A process for producing a non-ferrous metal alloy casting as claimed in claim 3, wherein the surfactant is fatty alcohol polyoxyethylene ether.

6. A process for producing a non-ferrous metal alloy casting as claimed in claim 3, wherein the nano-powder is nano-zinc oxide; the nano powder is divided into three types according to the particle size, specifically large particle nano powder, medium particle nano powder and small particle nano powder.

7. A process for producing a non-ferrous metal alloy casting as claimed in claim 6, wherein the contents of the large, medium and small particle nanopowders are 30%, 30% and 40% by weight respectively.

8. The production process of a nonferrous metal alloy casting according to claim 6, wherein the particle diameters of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder are respectively 700-800nm, 200-400nm and 20-80 nm.

9. A production process of a non-ferrous metal alloy casting as recited in claim 1, wherein the casting treatment in step (4) is performed simultaneously with ultrasonic treatment, and the frequency of ultrasonic treatment is controlled to 600-700 kHz.

10. A process for the production of a non-ferrous metal alloy casting as recited in claim 1 wherein the die casting mold is preheated to 220-260 ℃ prior to the die casting treatment in step (5).

Technical Field

The invention relates to the technical field of alloy casting processing, in particular to a production process of a non-ferrous metal alloy casting.

Background

The casting of non-ferrous metal alloy is carried out by filling molten metal into casting mould to obtain casting of parts blank in various shapes. Non-ferrous metal alloy castings are common in the fields of manufacturing beams, gas turbine blades, pump bodies, hangers, hubs, engine crank left crankcase covers and the like, and are also widely used for manufacturing household appliances such as sandwich clamps, baking trays and the like.

The traditional non-ferrous metal alloy part has the advantages of saving metal, reducing cost, reducing working hours and the like, but the problems of air holes, bubbles, shrinkage porosity, cracks and the like are very easily generated in the casting process, so that the surface is not smooth, the casting structure is loose and the like, the performance and the service life of the casting are seriously influenced, and the yield of production is reduced.

Therefore, it is necessary to develop a process for producing a non-ferrous metal alloy casting to solve the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a production process of a non-ferrous metal alloy casting, which has the advantages of effectively improving the production yield, increasing the casting precision, reducing the cost and prolonging the service life of a product.

In order to achieve the purpose, the invention provides the following technical scheme:

a production process of a non-ferrous metal alloy casting comprises the following steps:

(1) smelting into liquid:

smelting non-ferrous metal alloy into non-ferrous metal alloy liquid for later use;

(2) impurity removal treatment:

carrying out impurity removal treatment on the non-ferrous metal alloy liquid obtained in the step (1);

(3) treating the die:

spraying a special casting agent on the inner cavity of the mold, and airing for later use;

(4) casting treatment:

pouring the non-ferrous metal alloy liquid treated in the step (2) into the mould treated in the step (3) to obtain a cast alloy ingot for later use;

(5) die-casting and forming:

and (5) putting the casting alloy ingot obtained in the step (4) into a die-casting die for die-casting treatment, and obtaining a finished product casting after the die-casting treatment is finished.

Further, the impurity removal treatment in the step (2) is specifically to perform impurity removal treatment on fluorite for 3-4 times. Through adopting above-mentioned technical scheme, can carry out effectual the getting rid of to the foreign matter in the non ferrous metal alloy liquid, and the residue of foreign matter can cause and cast the industry and produce very big stress when cooling shaping to influence the quality of product.

Further, the casting agent in the step (3) is prepared from the following substances in parts by weight:

50-55 parts of yttrium oxide micro powder, 25-30 parts of yttrium sol, 0.5-1 part of butanediol, 1-1.5 parts of ethyl acetate, 1-2 parts of surfactant and 10-15 parts of nano powder.

By adopting the technical scheme, the special casting agent is sprayed in the inner cavity of the mold, and the casting agent can improve the surface quality and the yield of subsequent castings.

Furthermore, the particle size of the yttrium oxide micro powder is 300 meshes. Through adopting above-mentioned technical scheme, the particle size of yttria miropowder has been controlled, and this great yttria miropowder of granule can provide good isolation barrier for the casting liquid, has promoted better drawing of patterns and shaping of foundry goods, can also cooperate with the use of nanometer powder, strengthens holistic result of use.

Further, the surfactant is fatty alcohol-polyoxyethylene ether.

Further, the nano powder is nano zinc oxide; the nano powder is divided into three types according to the particle size, specifically large particle nano powder, medium particle nano powder and small particle nano powder. Through adopting above-mentioned technical scheme, carry out the grading of granule to the nanometer powder, utilize the difference of granule size, can promote the homogeneity of whole coating on the one hand, avoid gathering, on the other hand can reduce the stress on casting surface through the difference of degree of expansion, packing interval to the cooperation yttrium oxide miropowder has improved the surface accuracy quality of casting.

Further, the content of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder in the total weight percentage respectively corresponds to 30%, 30% and 40%.

Furthermore, the corresponding particle diameters of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder are respectively 700-800nm, 200-400nm and 20-80 nm. By adopting the technical scheme, the components are strictly controlled in size and content, so that different non-ferrous metal alloys can achieve good quality and efficiency when being produced and prepared.

Further, during the casting treatment in the step (4), ultrasonic treatment is also performed at the same time, and the frequency of the ultrasonic treatment is controlled to be 600-700 kHz. By adopting the technical scheme, the ultrasonic vibration is utilized, so that the tamping of the casting liquid is facilitated, the uniformity of the material is improved, and the overall quality is ensured.

Further, the die-casting mold is preheated to 220-260 ℃ before the die-casting process in the step (5).

In summary, compared with the prior art, the invention has the following beneficial effects:

(1) the production process can effectively reduce the phenomena of surface cracking, scabbing and nodulation of the casting, and improve the quality and the precision of the surface of the casting;

(2) the production process can avoid the phenomenon of destructive stress concentration in the casting, and ensure the uniformity of tissues at each part of the casting, thereby well ensuring the quality of the casting, such as strength and the like;

(3) the method has the advantages of simple overall process, easy popularization and application, low overall production cost, low energy consumption and high qualification rate, and is popularized and applied.

Detailed Description

The present invention will be described in detail with reference to examples.

Example 1:

a production process of a non-ferrous metal alloy casting comprises the following steps:

(1) smelting into liquid:

smelting non-ferrous metal alloy into non-ferrous metal alloy liquid for later use;

(2) impurity removal treatment:

carrying out impurity removal treatment on the non-ferrous metal alloy liquid obtained in the step (1); the impurity removal treatment is specifically that fluorite is used for removing impurities for 3-4 times;

(3) treating the die:

spraying a special casting agent on the inner cavity of the mold, and airing for later use; the casting agent is prepared from the following substances in parts by weight:

50 parts of yttrium oxide micro powder, 25 parts of yttrium sol, 0.5 part of butanediol, 1 part of ethyl acetate, 1 part of surfactant and 10 parts of nano powder;

the particle size of the yttrium oxide micro powder is 300 meshes; the surfactant is fatty alcohol-polyoxyethylene ether; the nano powder is nano zinc oxide; the nano powder is divided into three types according to the particle size, in particular to large-particle nano powder, medium-particle nano powder and small-particle nano powder; the content of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder in the total weight percentage respectively corresponds to 30 percent, 30 percent and 40 percent; the corresponding particle diameters of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder are respectively 700-800nm, 200-400nm and 20-80 nm;

(4) casting treatment:

pouring the non-ferrous metal alloy liquid treated in the step (2) into the mould treated in the step (3) to obtain a cast alloy ingot for later use; during casting treatment, ultrasonic treatment is also carried out at the same time, and the ultrasonic frequency is controlled to be 600 kHz;

(5) die-casting and forming:

and (5) putting the cast alloy ingot obtained in the step (4) into a die-casting die for die-casting treatment, and obtaining a finished product casting after the die-casting treatment is finished, wherein the die-casting die is preheated to 220 ℃ before the die-casting treatment.

Example 2:

a production process of a non-ferrous metal alloy casting comprises the following steps:

(1) smelting into liquid:

smelting non-ferrous metal alloy into non-ferrous metal alloy liquid for later use;

(2) impurity removal treatment:

carrying out impurity removal treatment on the non-ferrous metal alloy liquid obtained in the step (1); the impurity removal treatment is specifically that fluorite is used for removing impurities for 3-4 times;

(3) treating the die:

spraying a special casting agent on the inner cavity of the mold, and airing for later use; the casting agent is prepared from the following substances in parts by weight:

53 parts of yttrium oxide micro powder, 28 parts of yttrium sol, 0.8 part of butanediol, 1.3 parts of ethyl acetate, 1.5 parts of surfactant and 12 parts of nano powder;

the particle size of the yttrium oxide micro powder is 300 meshes; the surfactant is fatty alcohol-polyoxyethylene ether; the nano powder is nano zinc oxide; the nano powder is divided into three types according to the particle size, in particular to large-particle nano powder, medium-particle nano powder and small-particle nano powder; the content of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder in the total weight percentage respectively corresponds to 30 percent, 30 percent and 40 percent; the corresponding particle diameters of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder are respectively 700-800nm, 200-400nm and 20-80 nm;

(4) casting treatment:

pouring the non-ferrous metal alloy liquid treated in the step (2) into the mould treated in the step (3) to obtain a cast alloy ingot for later use; during casting treatment, ultrasonic treatment is also carried out at the same time, and the ultrasonic frequency is controlled to be 680 kHz;

(5) die-casting and forming:

and (5) putting the cast alloy ingot obtained in the step (4) into a die-casting die for die-casting treatment, and obtaining a finished product casting after the die-casting treatment is finished, wherein the die-casting die is preheated to 240 ℃ before the die-casting treatment.

Example 3:

a production process of a non-ferrous metal alloy casting comprises the following steps:

(1) smelting into liquid:

smelting non-ferrous metal alloy into non-ferrous metal alloy liquid for later use;

(2) impurity removal treatment:

carrying out impurity removal treatment on the non-ferrous metal alloy liquid obtained in the step (1); the impurity removal treatment is specifically that fluorite is used for removing impurities for 3-4 times;

(3) treating the die:

spraying a special casting agent on the inner cavity of the mold, and airing for later use; the casting agent is prepared from the following substances in parts by weight:

55 parts of yttrium oxide micro powder, 30 parts of yttrium sol, 1 part of butanediol, 1.5 parts of ethyl acetate, 2 parts of surfactant and 15 parts of nano powder;

the particle size of the yttrium oxide micro powder is 300 meshes; the surfactant is fatty alcohol-polyoxyethylene ether; the nano powder is nano zinc oxide; the nano powder is divided into three types according to the particle size, in particular to large-particle nano powder, medium-particle nano powder and small-particle nano powder; the content of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder in the total weight percentage respectively corresponds to 30 percent, 30 percent and 40 percent; the corresponding particle diameters of the large-particle nano powder, the medium-particle nano powder and the small-particle nano powder are respectively 700-800nm, 200-400nm and 20-80 nm;

(4) casting treatment:

pouring the non-ferrous metal alloy liquid treated in the step (2) into the mould treated in the step (3) to obtain a cast alloy ingot for later use; during casting treatment, ultrasonic treatment is also carried out at the same time, and the ultrasonic frequency is controlled to be 700 kHz;

(5) die-casting and forming:

and (5) putting the cast alloy ingot obtained in the step (4) into a die-casting die for die-casting treatment, and obtaining a finished product casting after the die-casting treatment is finished, wherein the die-casting die is preheated to 260 ℃ before the die-casting treatment.

Comparative example 1:

the comparative example 1 is different from the example 2 only in that the large-particle nano powder component in the nano powder is omitted and replaced by the medium-particle nano powder with equal mass part, except that the other steps are the same.

Comparative example 2:

the comparative example 2 is different from the example 2 only in that the small-particle nano powder component in the nano powder is omitted and replaced by the medium-particle nano powder with equal mass part, except that the other steps are the same.

Comparative example 3:

comparative example 3 is different from example 2 only in that the nano-powder component is omitted, except that the steps of the method are the same.

In order to compare the effects of the present invention, the performance tests are performed on the methods corresponding to the above example 2 and comparative examples 1 to 3, specifically, the magnesium aluminum alloy sections of the same batch are selected to be processed and manufactured, except for different processing modes, the hard conditions of other sections, molds, and the like are the same, and then data statistics is performed on the products manufactured in each group, where the specific comparative data are shown in the following table 1:

TABLE 1

	Percent pass (%)	Surface finish (Ra)
			Example 2	98.50	5.1
Comparative example 1	90.5	8.6
			Comparative example 2	92.4	9.8
Comparative example 3	84.36	14.6

In conclusion, as can be seen from the above table 1, the process method of the present invention can significantly improve the qualification rate of the castings, and can enhance the surface precision quality of the castings, and has great market competitiveness and popularization and application value.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.