CN1045913C

CN1045913C - Metallic mould casting method and equipments therefor

Info

Publication number: CN1045913C
Application number: CN91103717A
Authority: CN
Inventors: 罗明科
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-05-26
Filing date: 1991-05-26
Publication date: 1999-10-27
Anticipated expiration: 2006-05-26
Also published as: CN1067195A

Abstract

The present invention provides a metal mould casting method and a metal template. The metal template is used to directly cast a metal mould, and is composed of a left mould cavity frame, a right mould cavity frame and a template, wherein a casting system and a water cooling system are arranged in the metal template; water cooling casting protects the metal template, and the castings in the metal template are solidified according to an order solidification principle. The present invention has the advantages of enlarged supercooling degree of molten metal, compact crystallization, enlarged specific gravity, and improved dimensional precision, smoothness and mechanical property, and can automatically copy metal moulds in a large number, greatly reduce production cost of the moulds and shorten delivery term.

Description

Metallic mould casting method and equipment thereof

The present invention relates to the metal die technical field, adopt the method for directly casting to make metal die.

In the industrial production process of modernization, metal die is as a kind of instrument, in blanks such as casting, forging and pressing, metal punching and powder metallurgy processing, and the processing and forming aspect of nonmetallic materials such as plastics, rubber, pottery, glass bringing into play important effect, is used widely.At present, the manufacturing of metal die, the various machining process of main dependence cut or grinding cast blank, and people generally believe that technology of die manufacturing has embodied a concentrated reflection of the skill of blank metalworking, its processing and fabricating operation is quite complicated, the mold cavity of different shape brings many difficulties to machining, therefore, the manufacturing of metal die generally needs long time, and die cost is high.The numerical controlization of Mould Machining lathe is the significant innovation of technology of die manufacturing, but mould mostly is the three-dimensional free surface shape, the Production Time of its procedure and expense are that general mould factory institute is inefficient, make digital control processing can't demonstrate superiority based on computer-aided manufacturing, use producer for mould can only feed on fancies especially.The development of spark machined and Laser Processing Tool and Die Technology make people express very big expectation to it, but its numerical control degree has all surpassed Digit Control Machine Tool, and the making of procedure is still significant problem.Directly using casting to form this hope of mould is to have very much glamour to people, and ceramic precision casting is one of its representative, and it is a new technology that grows up on the basis of common sand moulding.Only on mold cavity surface, its technical process is that (1) is made thick wooden model and is used to make sand mold in difference; (2) make smart mould, use when irritating ceramic slurry, preferably adopt metal pattern; (3) sand mold preparation produces sand mold with roughcast; (4) preparation of ceramic slurry and pouring, matched moulds after being coated with one deck releasing agent on the smart mould, there is the space of 10 millimeter on smart mould and sand mold surface, pour into ceramic slurry from grout hole; (5) demoulding and roasting form ceramic layer at mold cavity surface, can produce the ceramic mould casting mold and be used for disposal pouring.The foundry goods fineness of ceramic precision casting is higher, and size is accurate, for new approach has been started in the mould manufacturing.But its molding, molding, formative technology complexity, difficulty, casting mold and foundry goods condensation annealing time are long, can influence the raising of casting quality, and mould uses producer also to be difficult to duplicate with the method.For mould manufacturer, mould belongs to single-piece production, and the manufacturing cycle is long, costly unavoidable, concerning mould used producer, the number of molds that needs was plural number in process of production, therefore, wish and to duplicate voluntarily at any time, so that meet the needs of production, reduce die cost, this problem is outstanding too and fail to achieve a solution at mould manufacturing industry, in the underdeveloped area of mold manufacturing industry, need voluntarily the mould of copy mold especially to seem and be necessary.

The purpose of this invention is to provide metallic mould casting method and equipment, its design philosophy is to adopt the metal form plate to come direct cast metal mould, can come copy mold with it, not only can reduce die manufacturing cost, shorten delivery date, and can satisfy mould and use producer's demand of copy mold voluntarily; Further aim of the present invention provides the problem that water-cooled metal apperance plate solves aforementioned existence.

The objective of the invention is to be achieved through the following technical solutions.

Metallic mould casting method, it is characterized in that having a metal pattern model, it is made of levorotation chamber frame, right die cavity frame and apperance plate, be provided with running gate system in the metal pattern model, the working surface of left and right die cavity frame, apperance plate and running gate system etc. is coated with high-temperature coatings, then molten metal is poured into the die cavity of metal pattern model from running gate system, treat that molten metal solidifies fully in the die cavity after, will cast good metal die again and from the metal pattern model, take out.

The inventive method technical scheme preferably is with a cover fluid or water cooling system the metal pattern model to be cooled off.

The better technical scheme of the inventive method is, the pipeline of fluid or water cooling system is installed in the type body of metal pattern model, fluid or water cooling medium can be oil, air or water etc., they are coolings of accelerating the type body by method that fluxion strap in pipeline is walked heat, by adjusting to the fluid temperature (F.T.) that enters pipeline and flow etc., cooling velocity that can the control type body.

Realize that the custom-designed equipment of the inventive method is the metal pattern model, the metal pattern model is made of levorotation chamber frame, right die cavity frame and apperance plate, is provided with running gate system in the metal pattern model, and working surfaces such as running gate system and die cavity are coated with high-temperature coatings.

The better design of metal pattern model that realizes the inventive method is, has the pipeline of a cover fluid or water cooling system to be installed in the type body of metal pattern model, and the water inlet of cooling system pipeline is positioned at the bottom of type body, and delivery port is positioned at the top of type body.

The result of the test that adopts the inventive method and equipment to carry out direct cast metal mould shows that (1) metal pattern model directly essence casts out metal die; (2) the metal die cavity dimension that casts out of essence is accurate, and any surface finish only needs simple processing polishing, just can come into operation; (3) can finish the production of metal die in enormous quantities fast, our factory moving jaw forge die use amount last year is 30 pairs, and the cooperation processing expense reaches 60,000 yuan, and is subjected to the quality influence at delivery date, adopts the metal pattern model that water-cooling system is arranged to come smart this forge die of casting.Per hour can smartly cast 10 pairs of 40 kilograms of metal dies with 0.5 ton of electric furnace, calculate, can reduce expenses 3.81 ten thousand yuan by 30 pairs of moulds.(4) mould uses factory or mould factory can duplicate metal die at any time fast as required; (5) adopt the water-cooled pouring type, the metal die quality that casts out is improved, the metallic crystal structure refinement, compact structure, no shrinkage porosite pore improves foundry goods proportion, and mechanical performance improves one more than the trade mark; (6) the metal pattern model is prolonged by the water-cooled protection life-span; (7) can realize exchanging permanent mold casting, metal die has been broken, and available metal apperance plate comes smart ingot metal mould, and the metal pattern model has been broken, and the available metal mould comes smart casting; (8) can reduce production costs significantly.

The invention has great practical value for the manufacturing of metal die provides new manufacture craft, should use producer generally to apply at die industry and mould, and important social benefit and economic benefit are arranged.

With reference to the accompanying drawings the present invention is described in further detail.

The smart casting of Fig. 1 water-cooled metal apperance plate pipe vice pincers handle body water-cooled metal mould schematic diagram

Fig. 2 is the right die cavity frame of a Fig. 1 water-cooled metal apperance plate left view

Fig. 3 is Fig. 1 water-cooled metal apperance plate left side apperance schematic diagram

The smart casting of Fig. 4 water-cooled metal apperance plate Follower Tong Holder of Pipe Pliers forge die schematic diagram

Fig. 5 is the right die cavity frame left view of Fig. 4 water-cooled metal apperance plate

Fig. 6 is Fig. 4 apperance plate left side apperance schematic diagram

Fig. 7 is that the B-B of Fig. 6 apperance plate cuts open and shows schematic diagram

Be the specific embodiment of metallic mould casting method of the present invention and equipment thereof shown in Fig. 1～7, wherein the identical person of each figure part name to mark mark identical.First embodiment shown in Fig. 1～3 adopts the direct cast pipe pincers of the invention pincers handle body water-cooled metal mould, its technical process is to carry out as follows, (1) according to the structure and the casting technique of metal die, produce metal pattern model 1, it is made of levorotation chamber frame 2, right die cavity frame 3 and apperance plate 4, it is high that the surface smoothness of apperance plate 4 is wanted, because it is very big to the metal die surface quality relation that casts out.(2) be provided with running gate system 5 in the metal pattern model 1; levorotation chamber frame 2, right die cavity frame 3 all are coated with high-temperature coatings with the working surface of metal pattern model 1 and running gate system 5; make its any surface finish and work to protect die cavity 6 grades, spray high-temperature coatings after, can use for a long time.(3) pipeline 8 of fluid or water cooling system 7 also is installed in the type body 9 of metal pattern model 1, fluid or water cooling medium can be oil, air or water etc., they are coolings of accelerating type body 9 by method that fluxion strap in pipeline 8 is walked heat, by adjusting to the fluid temperature (F.T.) that enters pipeline 8 and flow etc., cooling velocity that can control type body 9, owing to adopt water cooling more convenient and cheap, therefore suggestion makes water as cooling medium.When (4) mould assembly is poured into a mould; the cast gate 12 of molten metal from running gate system 5 is poured into the die cavity 6; the fetch boiling water gauge tap of cooling system 7; cooling water is entered the pipeline 8 from the bottom cooling water intake 10 of the type body 9 of metal pattern model 1; after absorbing the heat in the metal pattern model 1; discharge from delivery port 11 again; this water-cooled pouring type; promptly protected the metal pattern model, prolonged its life-span, the principle that the metal die foundry goods of casting is solidified is in order solidified; the degree of supercooling of molten metal increases; crystallization is fine and closely woven, increases proportion, and dimensional accuracy and fineness and mechanical performance are improved.(5) treat that after molten metal solidifies fully essence being cast good pipe vice pincers handle body water-cooled metal mould 13 takes out.The water cooled pipeline 14 of water-cooled metal mould 13 is pre-formedly to put into left and right die cavity frame respectively after good and by locating hole 15 location, pours into a mould simultaneously with mould 13 to link together again.

Second embodiment shown in Fig. 4～7 adopts the smart casting of water-cooled metal apperance plate Follower Tong Holder of Pipe Pliers forge die 16, and forge die 16 does not need water cooling system, therefore, does not put into water cooling pipeline 14 in the die cavity during smart the casting, only increases the rising head 17 that running gate system is arranged.Apperance on apperance plate 4 is changed into the Follower Tong Holder of Pipe Pliers model, all the other are with embodiment 1, can smart cast out required forge die 16, but continuous pouring copies large quantities of metal dies with water-cooled metal apperance plate, therefore fast, greatly reduce the metal die expenses, no matter be that the user duplicates voluntarily, or mould factory makes in batches, the present invention all provides new approach.

Claims

1, metallic mould casting method is characterized in that:

(a) a metal pattern model (1) is arranged, metal pattern model (1) is made of levorotation chamber frame (2), right die cavity frame (3) and apperance plate (4), be provided with running gate system (5) in the metal pattern model (1), the working surface of left and right die cavity frame (2), (3), apperance plate (4) and running gate system etc. is coated with high-temperature coatings, then

(b) molten metal is poured into the die cavity (6) of metal pattern model (1) from running gate system (5),

(c) treat that molten metal solidifies fully in the die cavity (6) after, will cast the metal die of getting well again and from metal pattern model (1), take out.

2, metallic mould casting method according to claim 1 is characterized in that:

(a) with a cover fluid or water cooling system (7) metal pattern model (1) is cooled off.

(b) pipeline (8) of fluid or water cooling system (7) is installed in the type body (9) of metal pattern model (1),

(c) fluid or water cooling medium can be oil, air or water etc., they are coolings of accelerating type body (9) by method that fluxion strap in pipeline (8) is walked heat, by adjusting to the fluid temperature (F.T.) that enters pipeline (8) and flow etc., cooling velocity that can control type body (9).

3, be used for the metal pattern model of the described metallic mould casting method of claim 1, it is characterized in that:

(a) a metal pattern model (1) is arranged,

(b) metal pattern model (1) is by levorotation chamber frame (2), and right die cavity frame (3) and apperance plate (4) constitute,

(c) be provided with running gate system (5) in the metal pattern model (1), running gate system (5) and die cavity working surfaces such as (6) are coated with high-temperature coatings.

4, according to the described metal pattern model of claim 3, it is characterized in that:

(a) there is the pipeline (8) of a cover fluid or water cooling system (7) to be installed in the type body (9) of metal pattern model (1).

(b) water inlet (10) of cooling system pipeline (8) is positioned at the bottom of type body (9), and delivery port (11) is positioned at the top of type body (9).