CN1092706A - The extension skin method of non-ferrous metal hot investment casting - Google Patents
The extension skin method of non-ferrous metal hot investment casting Download PDFInfo
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- CN1092706A CN1092706A CN 93102735 CN93102735A CN1092706A CN 1092706 A CN1092706 A CN 1092706A CN 93102735 CN93102735 CN 93102735 CN 93102735 A CN93102735 A CN 93102735A CN 1092706 A CN1092706 A CN 1092706A
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- water
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Abstract
The invention discloses a kind of extension skin method of non-ferrous metal hot investment casting, the special character of this method is: be that raw material is cast various wax patterns with paraffin, wax pattern is put into the container that fills 50-60 ℃ of water earlier behind the colored alkali of soap lye → immersions, silica flour solution → spread quartz sand → the soak ammonium chloride aqueous solution and is dewaxed through soaking, and then put into the container that fills 80-90 ℃ of water and dewax, dry after the dewaxing, be cast with non-ferrous metal water.The present invention can be used for producing natural landscapes such as various handicrafts, historical relic ornaments, personage flowers and plants.
Description
The present invention relates to a kind of extension skin method of non-ferrous metal hot investment casting, particularly is the extension skin method that raw material is cast wax pattern with paraffin.
By retrieval, do not find identical therewith technology as yet.Only see that archaeology has on the book and introduce the record that China Shang Dynasty makes the golden rank of nobility with the butter simulation, this technology is lasted thousand years, compares with current technology, seems ancient and backwardness.
The purpose of this invention is to provide a kind of is model with various historical relics, handicraft, personage, flowers and plants etc., casts wax pattern with paraffin, and manufacturing process is simple, the extension skin method of the non-ferrous metal hot investment casting that equipment investment is little.
The object of the present invention is achieved like this: the present invention includes mud carving, casting plaster mold, dry, be cast with non-ferrous metal water, its special character is that paraffin is packed into and casts various wax patterns on request in the plaster mold, in order to keep the cleaning on various wax patterns surface, need wax pattern is washed, cleaning fluid of the present invention uses liquid soap, the preparation method of liquid soap is: soap is cut into fragment puts into boiling water, it is dissolved, five kilograms of boiling water add soap or one in perfumed soap (100g), the soap lye temperature is controlled at 18-24 ℃, and the soap lye for preparing is packed in the container.Wax pattern is soaked in the container that fills soap lye, and soak time is 24 hours.For compressive resistance and the fineness that increases wax pattern, casting successfully, the present invention use sodium silicate solution to soak wax pattern.Its preparation method is: with the silica flour sieve series become especially carefully, very thin, thin, in the powder of 1-5 different fineness such as thin, thick standby, to steep after flower alkali dilute with water concentration is 12.5%, the silica flours different with fineness mix, stirring becomes the congee shape, press the order of 1-5 silica flour then, be respectively charged in 5 cylinders, the modulus of employed bubble flower alkali is 2.2-3.4, and concentration is 40-50.Corresponding therewith the quartz sand sieve series is become the husky powder of 1-5 different fineness, in five containers of packing in order.The wax pattern that to soak soap lye is put into the solution of bubble flower alkali and silica flour, treats to take out after wax pattern is stained with solution all, after solution is evenly distributed, sprinkles quartz sand equably the surperficial and empty one's parents of wax pattern.The class-mark of the quartz sand that spreads is corresponding with the container number of immersion sodium silicate solution with number of times, promptly spreads quartz sand No. 1 from what No. 1 cylinder soaked, spreads quartz sand No. 2 from what No. 2 cylinders soaked, by that analogy.In order to strengthen the compression strength of wax pattern, the preparation ammonium chloride solution, its preparation method is: the pure ammonium chloride of 99.5% analysis is mixed with 25% the aqueous solution, puts into container, vessel port is obturaged.The wax pattern of spreading quartz sand is immersed in the ammonium chloride solution, and soak time is 1-2 minute, and ammonium chloride with the chemical equation of bubble flower alkali is:
Soak the wax pattern of superchlorination ammonium salt solution, be placed on screen cloth in the container that fills 50-60 ℃ of water and take out after preheating 3-5 minute, be put in the container that fills 80-90 ℃ of water again, wax dissolves in water bubbles through the water column, and reaches the purpose of dewaxing.
Purpose of the present invention can also reach by following measure: in the process for preparation of bubble flower alkali and silica flour solution, concentration is that the amount of water of 40 bubble flower alkali is itself 3.1 times.Concentration is that the amount of water of 50 bubble flower alkali dilution is itself 4 times.Wax pattern sands, and to be immersed in the container of bubble flower alkali and silica flour solution corresponding for used fineness and wax pattern.
The drawing explanation of accompanying drawing:
Accompanying drawing is a process chart of the present invention.
Embodiment describes the present invention in detail below in conjunction with (accompanying drawing).
Early stage of the present invention, technology was with mud sculpture → with gypsum mold (also available low-melting metal mold) → turn over wax pattern with mould, complicated wax pattern can be disintegrated the mud carving and be made plaster mold, plaster mold by a part part waters into wax pattern, and the wax pattern by a part part is assembled into whole complicated model again.On wax pattern, at first set up dead head, the wax pattern that has dead head is positioned in the container of dress soap lye, the present invention adorns the cylinder of the container employing 50cm of soap lye, the optimum temperature of soap lye is 20 ℃, the concentration of soap lye is decided according to clean effect, can not add soap or perfumed soap again if clean effect is good, general controlled quentity controlled variable is that 5 kg of water add a cake of soap (100g).Wax pattern is immersed in the soap lye, because cured proportion need be hung a weight less than water on cured type, in case wax pattern is bubbled through the water column, the method that wax pattern is soaked soap lye is: irritate soap lye toward the hollow parts of wax pattern earlier, and then all soak, the time of soaking soap lye is 24 hours.To soak the wax pattern of soap lye after 24 hours and slowly put into the bubble flower alkali silica flour solution for preparing, immersion process is: earlier the hollow part of wax pattern is filled bubble flower alkali silica flour solution, and then wax pattern integral body is soaked.The compound method of bubble flower alkali and silica flour is: prepare 5 mouthfuls of cylinders, line up 1-5 number.
1, be that 3.2 concentration are 40 bubble flower alkali with modulus, add 3.1 times of water dilutions, concentration is 12.5%, will especially carefully be that No. 1 silica flour is placed on the inside again, stirs with waddy.What of solution are as the criterion according to immersing wax pattern, put into cylinder No. 1 after stirring into the congee shape.
2, modulus is 3.4, and concentration is 40 bubble flower alkali, adds 3.2 times of water dilutions, and concentration is 12.5%, adds very thin i.e. No. 2 silica flours and stirs, and puts into cylinder No. 2 after stirring into the congee shape.
3, modulus is 2.2, and concentration is 50 bubble flower alkali, adds 4 times of water dilutions, and concentration is 12.5%, adds more promptly that No. 3 quartz sands stir, and puts into cylinder No. 3 after stirring into the congee shape.
4, modulus is 2.3, and concentration is 50 bubble flower alkali, adds 4 times of water dilutions, and concentration is 12.5%, adds No. 4 quartz sands and stirs, and puts into cylinder No. 4 after stirring into the congee shape.
5, modulus is 2.5, and concentration is 50 bubble flower alkali, adds 4 times of water dilutions, and concentration is 12.5%, adds No. 5 silica flours and stirs, and puts into cylinder No. 5 after stirring into the congee shape.
The wax pattern that to soak soap lye is at first put to No. 1 cylinder and is soaked bubble flower alkali silica flour solution, after treating that whole wax pattern was all soaked sodium silicate solution, take out at once, mould gyrates, solution is evenly distributed, spread quartz sand then No. 1, the order that sands is: spread the empty hall position of wax pattern earlier, after spread the surface.The quick sand on dewax type surface then, the fineness of quartz sand puts in order corresponding with silica flour, also is 1-5 number.The wax pattern of spreading No. 1 quartz sand is immersed in the ammonium chloride solution at once, and soak time is 1-2 minute, and optimum value is 16 minutes, NH
4Cl and Na
2OSio
2Fully reaction is for good.The wax pattern that to spread No. 1 sand that uses the same method is stained with sodium silicate solution in No. 2 cylinders, spreading No. 2 quartz sands soaks ammonium chloride solution and took out in 2 minutes, by that analogy, wax pattern is stained with and is soaked sodium silicate solution five times, spread quartz sand five times, soak till five times ammonium chloride solutions, promptly in No. 1 cylinder, soak sodium silicate solution, spread No. 1 quartz sand and soak ammonium chloride and begin till return No. 2 cylinders and soak bubble flower alkali and spread No. 2 quartz sands and soak ammonium chloride solution and be stained with five times sodium silicate solutions by that analogy always and spread five times quartz sands and soak five times ammonium chloride.The cycle of circulation is many more, and intensity is big more, and the casting effect is good more.
The effect of silica flour, quartz sand is: hard high temperature resistant, the present invention is to make non-ferrous casting fineness good with the purpose that they are divided into five grades, and texture is clear.Non-ferrous casting of the present invention refers to copper spare.
The effect of bubble flower alkali is: play adhesive.For dewaxing technique is carried out smoothly, foundry goods fineness is good, and mould inside is born the even the present invention of pressure and used the high bubble flower alkali of modulus earlier, and the low bubble flower alkali of modulus is used in the back.
The chemical reaction of ammonium chloride and bubble flower alkali is as follows:
Ammonium chloride and bubble flower alkali reaction generate salt (Nacl) and (H
2O), and=silica (SiO
2) ,=silica is not dissolved in water, forms sediment, plays the effect of the cementation of fissures, increase fineness in silica flour.Ammonium chloride generates ammonia volatilization and falls in chemical reaction, the bubble flower alkali of the ammonium chloride of two units and a unit, and fully reaction is so bubble spends alkali, ammonium chloride concentration should often check the concentration that maintains the standard.Need to replenish at any time solid ammonium chloride in practice to reconcile concentration.
The embodiment of dewaxing operation: with two containers, the present invention adopts bucket, and a bucket is adorned 50-60 ℃ water, and the optimum value of water temperature is 55 ℃, the water that another dress is 80-90 ℃, and the optimum value of water temperature is 85 ℃.Be put into preheating in 55 ℃ the bucket with the wax pattern of screen cloth after with cassia bark (promptly sanding) earlier, take out in the bucket that is put into 85 ℃ again after spending 4 minutes, wax is slowly taken down the dead head rod after dissolve in water, illustrate when not emitting bubble in the mould that wax does not purify.
After the wax pattern dewaxing, oven dry, by the oven dry of regular production program, on request image is watered cast copper water after the oven dry.
Adopt the present invention, can arbitrary selected moulding, as handicraft and personage flowers and plants images such as Mi Lefo, red crowned crane candlestick, Jin Jue.
Outstanding advantages of the present invention is:
1, technique is simple, and equipment investment is little;
2, when casting crack not, fineness is good;
3, adapt to various moulding;
4, be fit to individual or large-scale production.
Claims (4)
1, a kind of extension skin method of non-ferrous metal hot investment casting comprises mud carving, casting plaster mold, dries, is cast with non-ferrous metal water, it is characterized in that:
A, non-ferrous metal hot investment casting model are raw material with paraffin, and the paraffin of packing in the casting plaster mold is well made wax pattern;
B, preparation liquid soap: soap is cut into fragment puts into boiling water, make its fusing, five kilograms of boiling water add a cake of soap, and the soap lye temperature is controlled at 18-24 ℃, and soap lye is packed in the container;
C, wax pattern are soaked in the container that fills soap lye, and soak time is 24 hours;
D, preparation sodium silicate solution: become the powder of 1-5 different fineness standby the silica flour sieve series, with bubble flower alkali dilute with water concentration is that the 12.5% back silica flour different with fineness mixes, stirring becomes the congee shape, press the order of 1-5 silica flour, be respectively charged in the container, the modulus of bubble flower alkali is 2.2-3.4, and concentration is 40-50;
E, preparation quartz sand: the quartz sand sieve series is become the husky powder of 1-5 different fineness, be respectively charged in five ponds;
F, spread quartz sand: the wax pattern that will soak soap lye is put into the solution of bubble flower alkali and silica flour, and wax pattern is taken out after being stained with solution all, after solution is evenly distributed, sprinkles quartz sand equably the surperficial and empty one's parents of wax pattern;
G, preparation ammonium chloride solution: the pure ammonium chloride of 99.5% analysis is mixed with 25% the aqueous solution, puts into container, vessel port is obturaged;
H, the wax pattern of spreading quartz sand are immersed in the ammonium chloride solution, and soak time is 1-2 minute, and ammonium chloride with the chemical equation of bubble flower alkali is:
2NH
4Cl+Na
2OSiO
2=SiO
2+2NHCl+2NH
3↑+H
2O；
L, dewaxing: the wax pattern that will hang skin with screen cloth is placed in the container that fills 50-60 ℃ of water to be taken out after preheating 3-5 minute, was put in the container that fills 80-90 ℃ of water again, and wax dissolves in water bubbles through the water column.
2, the extension skin method of non-ferrous metal hot investment casting according to claim 1 is characterized in that steeping in the process for preparation of colored alkali and silica flour solution, and concentration is that the amount of water of 40 bubble flower alkali dilution is itself 3.1 times.
3, the extension skin method of non-ferrous metal hot investment casting according to claim 1 is characterized in that steeping in the process for preparation of colored alkali and silica flour solution, and concentration is that the amount of water of 50 bubble flower alkali dilution is itself 4 times.
4, the extension skin method of non-ferrous metal hot investment casting according to claim 1 is characterized in that the fineness that wax pattern sands is corresponding with containers sequentially and number that number of times and wax pattern are immersed in bubble flower alkali and silica flour solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93102735 CN1092706A (en) | 1993-03-18 | 1993-03-18 | The extension skin method of non-ferrous metal hot investment casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93102735 CN1092706A (en) | 1993-03-18 | 1993-03-18 | The extension skin method of non-ferrous metal hot investment casting |
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| Publication Number | Publication Date |
|---|---|
| CN1092706A true CN1092706A (en) | 1994-09-28 |
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ID=4984253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93102735 Pending CN1092706A (en) | 1993-03-18 | 1993-03-18 | The extension skin method of non-ferrous metal hot investment casting |
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| Country | Link |
|---|---|
| CN (1) | CN1092706A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045555C (en) * | 1997-06-30 | 1999-10-13 | 浙江大学 | Simple casing tech by lost wax casting |
-
1993
- 1993-03-18 CN CN 93102735 patent/CN1092706A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045555C (en) * | 1997-06-30 | 1999-10-13 | 浙江大学 | Simple casing tech by lost wax casting |
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