CN205904416U - Modified low pressure casting water -cooling side forms - Google Patents

Abstract

The utility model discloses a modified low pressure casting water -cooling side forms, including side forms (1), water -cooling insert (3), annular water channel (2) and heat dam (6), annular water channel (2) outer 10mm that moves, (3) are inserted in heat dam (6) setting in the water -cooling on, heat dam (6) set up between annular water channel (2) and foundry goods die cavity. Heat dam (6) are apart from the at least 6mm of annular water channel (2), and heat dam (6) width sets up to 8mm, and cusped edge department radius angle, heat dam (6) highly set up to the water -cooling two -thirds of (3) that inserts. Heat dam (6) width is unanimous with the window width, and heat dam (6) are apart from die joint 5mm. The utility model discloses the scheme is simple feasible, but the effective control water cooling is regional, avoids not needing the strong cold regional overcool of water -cooling. Under the prerequisite of guaranteeing foundry goods realization directional solidification, reduce casting shrink defect and surface defect, improve and cast the yield.

Description

A kind of improved low pressure casting water-cooled side mould

Technical field

This utility model is related to a kind of mould, more particularly, to a kind of low pressure casting water cooling mould for aluminum wheels.

Background technology

Because water cooling mold makes, there is the reasons such as difficulty, the more complicated cost of mould structure be higher, low pressure casting water cooled mo(u)ld Tool makes water annulus cooling mould and foundry goods generally in mould.Water channel form is nearly quadrant structure or nearly two points One of based on circle structure, this kind of structures shape water-cooling pattern is the ring surface type of cooling, film-cooled heat is big and be different from air holes The cold mode of point.In addition water-cooled heat exchange acutely cool down strong, if the unreasonable casting flaw that may result in of design in process implementing Produce.

Traditional design side mould water-cooled water channel adopts nearly quadrant structure, and cooled region removes for spoke root and spoke Outside position, also external bcad seats window directly cools down.Due to the big mold temperature of water-cooled intensity low it is easy to cause this position produce The surface defects such as cold shut, misrun and spoke root shrink defects；Also the feeding to wheel rim position for the cover tire ring support window can be affected, Wheel rim is caused to produce shrink defects；Thick big outer rim is also difficult to by feeding and produces defect simultaneously, therefore urgently improve.

Content of the invention

This utility model is directed to the weak point of traditional design, provides a kind of improved low pressure casting water-cooled side mould, this side Mould can be prevented effectively from spoke, wheel rim casting flaw and casting surface defect, reduces foundary loss rate.

This technical scheme is: a kind of improved low pressure casting water-cooled side mould, including side mould, water-cooled insert, water annulus and Heat dam.Move 10mm outside water annulus, while the intensity of cooling weakening external bcad seats window, also reserve enough space cloth Put heat dam.Heat dam is arranged in water-cooled insert, and heat dam is arranged between water annulus and foundry goods die cavity, plays control cold But the purpose in region, weakens water annulus external bcad seats window directly cold by force further.During processing heat dam, from water-cooled insert Lower plane is up processed on in-plane, so that the temperature of effectively isolation water annulus external bcad seats window and outer rim position Impact.

Further, described heat dam apart from more than water annulus 6mm it is ensured that die life avoids crack of die.

Further, described heat dam width dimensions are 8mm, are easy to process.It is related at heat dam cusped edge, rounding is to avoid Stress concentration during temperature change and ftracture.

Further, described heat-insulated groove height is particularly critical, depending on needing according to outer window bcad seats thickness.When cover tire ring support When the thicker heat of window is many, heat-insulated groove height can be for the half of cooling insert to cool down；When the relatively thin heat of cover tire ring support window When few, heat dam can be worked into top surface from water-cooled insert bottom surface, completely cuts off the cooling of water annulus external bcad seats window completely.

Further, distribution in water-cooled insert for the described heat dam is determined by window width, its width and window width Degree is consistent.Due to there being 45 ° of die joints between water-cooled insert, when spoke is near die joint, heat dam is apart from die joint 5mm, it is to avoid run aluminum.

Further, depending on described heat dam quantity is by wheel number of windows.

Compared with traditional design, the beneficial effects of the utility model are: scheme simple possible.By improving, can be effective Control water cooling region, it is to avoid cool down to not needing water-cooled region transitions cold by force.Before ensureing that consecutive solidification realized by foundry goods Put, reduce casting shrink defects and surface defect, improve qualified casting.

Brief description

Fig. 1 is the assembly drawing of die of background technology.

Fig. 2 is assembly drawing of die of the present utility model.

In figure 1. side mould, 2. water annulus, 3. water-cooled insert, 4. outer rim, 5. cover tire ring support window, 6. heat-insulated Groove.

Specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 2, a kind of improved low pressure casting water-cooled side mould, including side mould 1, water-cooled insert 3, water annulus 2 With heat dam 6.Water annulus 2 is outer to move 10mm, to weaken the intensity of cooling of external bcad seats window 5, also for arranging heat dam 6 Reserve enough spaces.Heat dam 6 is arranged in water-cooled insert 3, and heat dam 6 is arranged between water annulus 2 and foundry goods die cavity. Control the purpose of cooled region, weaken the external bcad seats window 5 of water annulus 2 further directly cold by force.For completely cutting off water annulus 2 The externally Influence of Temperature Field of bcad seats window 5 bottom and outer rim 4 position, heat dam 6 is from water-cooled insert 3 lower plane up plane Direction processes.

For ensureing that die life avoids crack of die, heat dam 6 is apart from water annulus 2 at least 6mm.

For ease of processing and avoiding stress concentration during temperature change to ftracture, heat dam 6 width is set to 8mm, at cusped edge Rounding.

For playing to a certain amount of cooling effect of present case cover tire ring support window 5, heat dam 6 height is set to water-cooled insert 2/3rds of 3.Can ensure that cover tire ring support window 5 temperature also will not be made while outer rim 4 smooth feeding too low and Produce casting flaw.

Heat dam 6 width is consistent with window width.When spoke is near die joint, heat dam 6 apart from die joint 5mm, Avoid running aluminum.In addition, depending on heat dam 6 quantity is by wheel number of windows, this case heat dam 6 quantity is 10.

When water cooling starts, this utility model can effectively strengthen the cooling to spoke thermal center and spoke, external bcad seats The different shaping thickness of window 5 can flexibly adjust heat dam 6 highly to carry out to it cooling down control.Ensure foundry goods consecutive solidification On the premise of, reduce casting shrink defects and surface defect, improve qualified casting.

Claims (3)

1. a kind of improved low pressure casting water-cooled side mould, including side mould (1), water-cooled insert (3), water annulus (2) and heat dam (6) it is characterised in that: water annulus (2) moves outward 10mm, and heat dam (6) is arranged in water-cooled insert (3), heat dam (6) arrange Between water annulus (2) and foundry goods die cavity.

2. a kind of improved low pressure casting water-cooled side mould according to claim 1 it is characterised in that: heat dam (6) distance Water annulus (2) at least 6mm, heat dam (6) width is set to 8mm, rounding at cusped edge, and heat dam (6) is highly set to water 2/3rds of cold insert (3).

3. a kind of improved low pressure casting water-cooled side mould according to claim 2 it is characterised in that: heat dam (6) width Consistent with window width, heat dam (6) is apart from die joint 5mm.