CN1301813C

CN1301813C - Metallic casting mould

Info

Publication number: CN1301813C
Application number: CNB2005100417044A
Authority: CN
Inventors: 李玉合
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-07
Filing date: 2005-02-07
Publication date: 2007-02-28
Anticipated expiration: 2025-02-07
Also published as: CN1693007A

Abstract

The present invention mainly relates to a structure and a material of a metal mould for casting and a high conductive copper tile produced by using the metal mould. The metal mould for casting comprises an upper mould body, a lower mould body, a cast gate (4) and a riser head (3). The metal mould is mainly characterized in that the metal mould for casting also comprises an inner mould upper body (21) and an inner mould lower body (22) which form casting cavity bodies, wherein the outer sides of the inner mould upper body (21) and the inner mould lower body (22) are respectively and fixedly connected with an upper outer mould body (11) and a lower outer mould body (12). The upper outer mould body (11) and the lower outer mould body (12) of the metal mould for casting can be an upper box body and a lower box body. The metal mould of the present invention is divided into the inner mould body and the outer mould body to be processed, and the outer mould body can be designed into an outer box body standardized so as to decrease the casting volume to be processed and lower the processing difficulty. In addition, the problems of difficult integral processing and long period of a large size metal mould are solved.

Description

Metallic casting mould

Technical field:

The present invention relates generally to the structure, material of metallic casting mould and product combarloy that the use metal mold is produced thereof watt.

Background technology:

At present, metal mould cast method is that molten metal is poured in the casting mold that uses metal material processing, to obtain a kind of method of foundry goods.The foundry goods precision height that this method forms, allowance is little, and inherent quality is relatively good.And casting mold can repeatedly use repeatedly, is the method that present high accuracy foundry goods often adopts.The problem that this method exists is that the difficult processing of metal mold generally adopts the cast iron monoblock cast to be shaped substantially, then machining.Usually the cycle very long, for volume ratio foundry goods bigger, that required precision is high, the processing of its metal mold is difficulty very.In casting process, heat radiation is difficulty, and the foundry goods condensation time is long.

911037160 to disclose a kind of " water-cooled metal mould cast method and equipment " be to establish a cover cooling system on metal mold, logical as water, wet goods, accelerates the cooling of foundry goods, with the life-span of solution casting mold.980511270 to disclose a kind of " grouped milling ball metal mold system with partially attached sand and casting technique thereof " be partially attached sand on metal mold, to solve the quality problems of abrading-ball.The difficult processing of all unresolved heavy castings metal mold of above-mentioned two technical schemes, long problem of cycle.

Conducting copper tile claims conducting jaw plate again, is the crucial spare part that uses during the hot stove in ore deposit is produced, and it is operated in high temperature and bears in the adverse circumstances such as solution erosion.Therefore, for higher requirement is all arranged in its conduction, heat conductivility and service life.Generally adopt sand casting process production at present.Because metal grain is thick, its mechanical performance, high-temperature behavior and electric conductivity are generally lower, so there is the people to utilize the rolling thick copper coin that forms of copper processing factory to cut into the blank production of certain size by the size of brasses.Because blank has been eliminated the hole defective of sand casting after to a certain degree rolling, so intensity, conductance, heat conductivility all are improved to some extent, but the rolling thick copper coin crystal grain that forms is still thick, so its performance is desirable not enough, its inner water flowing cooling tube is again that the system of boring forms, change the direction place at water pipe and form two right angles connections, the flow resistance of water increases herein, flow velocity reduction suddenly causes the aggravation of impurity sinking speed, caliber is attenuated, discharge reduces, and causes the brasses temperature sharply to raise, and reduces service life.Moreover, adopt the bellmouth mode to connect in the place of contact tube water inlet, also have to be threaded, easily cause and beat arc, will cause soon and leak, cause brasses to be scrapped.In addition, blank is to form through rolling, and its use shape is subjected to certain limitation again.Still there are many fatal defectives so produce Conducting copper tile with the method.

Summary of the invention:

The objective of the invention is to avoid the deficiencies in the prior art part and a kind of metallic casting mould is provided.

Purpose of the present invention can be by realizing by the following technical solutions: a kind of metallic casting mould, include upper and lower type body, cast gate (4), rising head (3), form the interior type upper body (21) of casting cavity, interior type lower body (22), be fixed with outer body (11), following outer body (12) in its outside, its main feature is also to include metallic casting mould also to comprise the interior type upper body (21) that forms the casting cavity, be provided with the gap between the last outer body (11) in interior type lower body (22) and its outside, the following outer body (12), the gap can ventilate, and dispels the heat.Form the interior type upper body (21) of casting cavity, also can be provided with floor between the last outer body (11) in interior type lower body (22) and its outside, the following outer body (12), floor (51) and floor (52) the formation ventilating duct that is crisscross arranged, and top is provided with suction opeing (62), the bottom is provided with air inlet (61).Described floor number can respectively be 3-8 at last outer body (11), following outer body (12), also can decide as the case may be.Requiring for conductance is not very high product, and it also is feasible adopting the metal mold of cast iron manufacturing and cooling off in its back ventilation.

The last outer body (11) of described metallic casting mould, following outer body (12) can be upper and lower casing.Metal mold is divided into interior type body and the outer body that needs processing.Outer body can be designed as standardized outer case.To reduce casting mold volume and the difficulty of processing that needs processing.

The interior type upper body (21) of described formation casting cavity, the material of interior type lower body (22) is a highly heat-conductive material.Highly heat-conductive material can be copper alloy or is red copper.The thermal conductivity factor of copper is 10 times of cast iron, and the temperature of copper liquid is further reduced, and crystallization rate improves rapidly, and crystal grain has obtained further refinement, and its intensity, electric conductivity, thermal conductivity and service life are greatly improved.

Metallic casting mould of the present invention comprises that also casting system (4) and/or rising head (3) are sand mold, and casting system (4) comprises sprue (41), and ingate (42) and cup (43) are so that reduce the thermal loss of molten metal in running channel that pours into.Because running gate system is made of fast dry sand, guaranteeing has higher cast and riser feeding temperature, makes molten metal stamp smoothness, has improved the quality of product.

The present invention is provided with metallic core (7) in forming the casting cavity.Described metallic core (7) can be passage, and its two ends are respectively equipped with blowing mouth (71), air outlet (72).In casting process, ventilate,, form small grains, improve the internal quality of casting to reach the rapid crystallization of accelerating foundry goods inside.

Outer body (11) is gone up in the interior type upper body (21) of the described formation casting of metallic casting mould cavity, interior type lower body (22), outer body (12) can be integral body or is the several piece splicing down.The present invention is according to the casting purposes difference, and different parts adopts different metals to make, and perhaps, uses with a kind of metal around the formation foundry goods in metal mold and makes, and all the other are cylinder iron cast.

The invention has the beneficial effects as follows, simple in structure, reasonable in design.

1. solved the whole difficult processing of large-scale metal mold, the problem that the cycle is long.

2. high-new Conducting copper tile uses metal mold of the present invention to be in the interior type upper body (21) of being made by pure red copper, between the interior type lower body (22), because the thermal conductivity factor of copper is 10 times of cast iron, simultaneously in interior type upper body (21), the behind of interior type lower body (22) ventilates and forces cooling (but if taking the also water flowing cooling of certain seal approach), the temperature of copper liquid is further reduced, crystallization rate improves rapidly, crystal grain has obtained further refinement, and its intensity, electric conductivity, thermal conductivity and service life are greatly improved.

In cast in core forced ventilation, prevent on the one hand the core fusing, quickened the cooling velocity of molten metal around the core on the other hand again, same, the crystal grain of metal also further obtains refinement, and its intensity, electric conductivity are improved once more.In addition, the cooling water pipe slyness has excessively been exempted the unexpected variation of rolling brasses cooling water in corner speed in the cast brasses, impurity is piled up reduced, and current are smooth and easy, and the brasses temperature remains in the normal scope of application, has prolonged its service time.Running gate system is made of fast dry sand, and guaranteeing has higher cast and riser feeding temperature, makes copper liquid stamp smoothness, has improved the quality of brasses.

4. frock all adopts modularized design, and (comprise around the casing and making separately, then be assembled into integral body) be convenient processing and manufacture not only, for the many enterprises of product, makes member designs standardization of the same type, can reduce module number, and the frock manufacturing cost is reduced.

Description of drawings:

Be described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing:

Fig. 1 is the front view of the embodiment of the invention.

Fig. 2 is the A-A cutaway view of the embodiment of the invention.

Fig. 3 is the B-B cutaway view of the embodiment of the invention.

The combarloy watt front view of Fig. 4 (a) for using the present invention to produce.

Fig. 4 (b) is the cutaway view of Fig. 4 (a).

The specific embodiment:

Application examples: Fig. 1, Fig. 2, Fig. 3 have upper and lower type body for producing the metallic casting mould of combarloy watt, and cast gate 4, rising head 3 form the interior type upper body 21 of casting cavity, and interior type lower body 22 is fixed with outer body 11, outer body 12 down in its outside.Last outer body 11, following outer body 12 are upper and lower casing.Form the interior type upper body 21 of casting cavity, the material of interior type lower body 22 is a red copper.Form the interior type upper body 21 of casting cavity, be provided with floor between interior type lower body 22 and the last outer body 11 in its outside, the following outer body 12, floor 51 and the floor 52 formation ventilating duct that is crisscross arranged, and top is provided with suction opeing 62, the bottom is provided with air inlet 61.The floor number respectively is 3 at last outer body 11, following outer body 12.Casting system 4 and rising head 3 are sand mold, and casting system 4 comprises sprue 41, ingate 42 and cup 43.In forming the casting cavity, be provided with metallic core 7.Metallic core 7 is a copper pipe, and its two ends are respectively equipped with blowing mouth 71, air outlet 72.Interior type upper body is spliced by 21,23,25 several pieces, and interior type lower body is for to be spliced by 22,24,26 several pieces.Last outer body is spliced by 11,13,14 several pieces, and following outer body is spliced by 12,15,16 several pieces.

By above-mentioned measure, make the intensity of Conducting copper tile, electric conductivity and service life all are much improved.It has overcome the problem of the brasses existence made from sand mold and rolled copper slab fully.So various aspects of performance has all obtained bigger improvement, the range of application of metal mold is further enlarged, the production technology of Conducting copper tile has been brought up to a brand-new high level, its economic benefit of enterprise of producing ferroalloy and calcium carbide is improved significantly.

The combarloy watt performance comparison that new and old metal mold is produced:

Claims

1. metallic casting mould, include upper and lower type body, cast gate (4), rising head (3), form the interior type upper body (21) of casting cavity, interior type lower body (22), be fixed with outer body (11), following outer body (12) in its outside, it is characterized in that also comprising the interior type upper body (21) that forms the casting cavity, be provided with the gap or be provided with floor between the last outer body (11) in interior type lower body (22) and its outside, the following outer body (12), floor (51) and floor (52) the formation ventilating duct that is crisscross arranged, and top is provided with suction opeing (62), the bottom is provided with air inlet (61).

2. metallic casting mould as claimed in claim 1 is characterized in that described upward outer body (11), following outer body (12) can be upper and lower casing,

3. metallic casting mould as claimed in claim 1 is characterized in that also comprising the interior type upper body (21) that forms the casting cavity that the material of interior type lower body (22) is a highly heat-conductive material.

4. metallic casting mould as claimed in claim 3 is characterized in that described highly heat-conductive material can be copper alloy or is red copper.

5. metallic casting mould as claimed in claim 1 or 2 is characterized in that described floor number respectively is 3-8 at last outer body (11), following outer body (12).

6. metallic casting mould as claimed in claim 1 or 2 is characterized in that also comprising that casting system (4) and/or rising head (3) are sand mold.

7. metallic casting mould as claimed in claim 1 or 2 is characterized in that also being included in forming in the casting cavity and is provided with metallic core (7).

8. metallic casting mould as claimed in claim 7 is characterized in that described metallic core (7) can be passage, and its two ends are respectively equipped with blowing mouth (71), air outlet (72).

9. metallic casting mould as claimed in claim 1 or 2 is characterized in that the interior type upper body (21) of described formation casting cavity, interior type lower body (22), go up outer body (11), outer body (12) can be integral body or splices for several piece down.