CN202291284U

CN202291284U - Mould for preventing deformation of rectangular casting

Info

Publication number: CN202291284U
Application number: CN2011204920546U
Authority: CN
Inventors: 谢国丽
Original assignee: Sufa Hengdian Machinery Co Ltd CNNC
Current assignee: Sufa Hengdian Machinery Co Ltd CNNC
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2012-07-04
Anticipated expiration: 2021-12-01

Abstract

The utility model provides a mould for preventing the deformation of a rectangular casting. The mould comprises a wood mould arranged in a rectangular cavity, wherein a tiepiece slot communicated with the inner side wall of the rectangular cavity is arranged on the short-axis direction in the wood mould; and a tiepiece is arranged in the tiepiece slot. The deformation of the casting can be effectively reduced without determining and adjusting the deformation compensation of the casting through the trial production of initial workpiece.

Description

A kind of mould that prevents the rectangle casting deformation

Technical field

The utility model relates to mould applications, is specifically related to a kind of mould that prevents the rectangle casting deformation.

Background technology

Extremely shown in Figure 3 like Fig. 1; Cast steel valve body cast top is provided with rectangular cavities 1, in cast after coagulation and heat treated process, because the difference of shrinkage stress; Produce serious deformation through regular meeting; It is big that its deformation rule is that minor axis dimension becomes, and major axis dimension diminishes, and the deflection of minor axis dimension is than big many of the deflection of major axis dimension.As shown in Figure 4, in order to reduce the deflection of rectangular cavities 1, the method that adopts usually in the casting technique is when making wooden model 2, to shorten size at short-axis direction; Long axis direction is amplified, and distortion revisal amount 3 promptly is set, along with the size change of rectangle foundry goods is big; Distortion revisal amount 3 also increases; But what of deflection can't be grasped in advance, pass through the trial production of foundry goods initial workpiece after, adjustment distortion revisal amount 3.

Summary of the invention

The utility model technical problem to be solved is to provide a kind of mould that prevents the rectangle casting deformation, need not pass through the initial workpiece trial production and come distortion revisal amount definite and the adjustment foundry goods just can effectively reduce the deflection of foundry goods.

For solving above-mentioned existing technical problem; The utility model adopts following scheme: a kind of mould that prevents the rectangle casting deformation; Comprise the wooden model that is located in the rectangular cavities, be positioned at short-axis direction in the said wooden model and be provided with the lacing wire groove that is communicated with the rectangular cavities madial wall, be provided with lacing wire in the said lacing wire groove.

As preferably, said lacing wire is located at the center of lacing wire groove.Guaranteed the pulling force symmetry of lacing wire, effectively reduced the deflection of foundry goods the two side.

As preferably, the thickness h of said lacing wire be rectangular cavities thickness p 1/3 to 1/2.

As preferably, the width k of said lacing wire is 1.2 to 2 times of thickness h of lacing wire.

Beneficial effect:

The utility model adopts technique scheme that a kind of mould that prevents the rectangle casting deformation is provided, and need not just can effectively reduce through the next distortion revisal amount definite and the adjustment foundry goods of initial workpiece trial production the deflection of foundry goods.

Description of drawings

Fig. 1 is the front view of cast steel valve body moulding;

Fig. 2 is the left view of cast steel valve body moulding;

Fig. 3 is the vertical view of cast steel valve body moulding;

Fig. 4 adopts the user mode sketch map of existing wooden model for the rectangular cavities of cast steel valve body moulding;

Fig. 5 is the user mode sketch map that the rectangular cavities of cast steel valve body moulding adopts the utility model;

Fig. 6 is the cutaway view of the rectangular cavities of cast steel valve body moulding.

The specific embodiment

Like Fig. 5 and shown in Figure 6, a kind of mould that prevents the rectangle casting deformation comprises the wooden model 2 that is located in the rectangular cavities 1, is positioned at short-axis direction in the said wooden model 2 and is provided with the lacing wire groove 4 that is communicated with rectangular cavities 1 madial wall, is provided with lacing wire 5 in the said lacing wire groove 4.Said lacing wire 2 is located at the center of lacing wire groove 4.The thickness h of said lacing wire 5 be rectangular cavities 1 thickness p 1/3 to 1/2.The width k of said lacing wire 5 is 1.2 to 2 times of thickness h of lacing wire 5.After the casting; Rectangular cavities 1 is full of molten steel with lacing wire groove 4; And be connected with lacing wire 5, the madial wall through 5 pairs of rectangular cavities 1 of lacing wire produces pulling force, basic controlling the deflection of rectangular cavities 1 at short-axis direction; When carrying out castings production, need not just can effectively reduce through the next distortion revisal amount definite and the adjustment foundry goods of initial workpiece trial production again the deflection of foundry goods.

Claims

1. mould that prevents the rectangle casting deformation; Comprise the wooden model (2) that is located in the rectangular cavities (1); It is characterized in that: be positioned at short-axis direction in the said wooden model (2) and be provided with the lacing wire groove (4) that is communicated with rectangular cavities (1) madial wall, be provided with lacing wire (5) in the said lacing wire groove (4).

2. a kind of mould that prevents the rectangle casting deformation according to claim 1 is characterized in that: said lacing wire (2) is located at the center of lacing wire groove (4).

3. a kind of mould that prevents the rectangle casting deformation according to claim 1 is characterized in that: the thickness h of said lacing wire (5) be rectangular cavities (1) thickness p 1/3 to 1/2.

4. a kind of mould that prevents the rectangle casting deformation according to claim 3 is characterized in that: the width k of said lacing wire (5) is 1.2 to 2 times of thickness h of lacing wire (5).