CN203330396U

CN203330396U - Long nozzle forming mould

Info

Publication number: CN203330396U
Application number: CN2013203027115U
Authority: CN
Inventors: 魏昌晟; 闫广周; 刘国齐; 俱彦国; 王建国; 于建宾; 杨立强; 程相菲
Original assignee: Sinosteel Luoyang Institute of Refractories Research Co Ltd
Current assignee: Sinosteel Luoyang Institute of Refractories Research Co Ltd
Priority date: 2013-05-30
Filing date: 2013-05-30
Publication date: 2013-12-11
Anticipated expiration: 2023-05-30

Abstract

The utility model belongs to the technical field of function refractory material production application technologies and provides a long nozzle forming mould. The long nozzle forming mould comprises a rigid support body (1), a thin-wall elastic sheath (2) and a high-hardness elastic sheath (3). The rigid support body (1) is of a cavity structure, and the wall face of the rigid support body (1) is provided with a plurality of meshes. The thin-wall elastic sheath (2) is sleeved on the outer surface of the rigid support body (1) and tightly adheres to the rigid support body. The high-hardness elastic sheath (3) is sleeved on the periphery of the thin-wall elastic sheath (2), the bottom end of the thin-wall elastic sheath (2) is bent outward and then bent upward to wrap the lower end of the high-hardness elastic sheath, the upper end of the thin-wall elastic sheath (2) is bent outward and then bent downward to wrap the upper end of the high-hardness elastic sheath (3) after charging. By adopting the long nozzle forming mould, a long nozzle which is good in homogeneity and does not need appearance turning is obtained, raw materials are saved, and energy consumption and the labor intensity of workers are reduced.

Description

A kind of long nozzle mould

Technical field

The utility model belongs to functional refractory production application technical field, relates generally to a kind of long nozzle mould.

Background technology

Long nozzle claims again protective casing; be installed on the ladle below and join with the lower mouth of a river of sliding nozzle device; connecting ladle and tundish, play a part water conservancy diversion, prevent molten steel oxidation and splash, is to protect cast to improve the critical function refractory material of the quality of steel.

The material of long nozzle is generally carbon in conjunction with oxide-graphite composite material, is that to take oxide and graphite be primary raw material, take phenolic resins as bond and adds the composite that a small amount of additive is made.Existing moulding process mainly adopts cold isostatic compaction, and briquetting pressure is generally 100～150MPa.The specific embodiment is that the powdery blank is packed in the shape chamber consisted of rigidity core rod and elasticity jacket, and then jolt ramming finally is placed in the sealing of elasticity jacket in isostatic cool pressing equipment, according to the predetermined pressure curve, completes forming process.Mainly there is following problem in above-mentioned long nozzle mould: 1, in forming process, only rely on the pressure forming goods of own elasticity jacket outside, easily produce stress and concentrate, cause defect density, directly affect quality of item; 2, rigidity core rod quality is large and be difficult for deviating from goods, causes labor strength large, directly affects production efficiency; 3, goods need the later stage to reach the profile specification requirement by Vehicle Processing usually, not only waste raw material but also time-consuming, and production efficiency is lower.

The utility model content

For solving the problems of the technologies described above, the purpose of this utility model is to propose a kind of long nozzle mould.

The utility model adopts following technical scheme for completing above-mentioned purpose:

A kind of long nozzle mould, described mould includes rigid support, thin-walled elasticity jacket and high rigidity elasticity jacket; There are a plurality of meshes on the wall that the rigid support of being made by metal material is cavity structure and described rigid support; Described thin-walled elasticity jacket is enclosed within the outer surface of rigid support and fits tightly with rigid support, described thin-walled elasticity jacket and described rigid support in conjunction with after outer surface and the inner wall shape of the long nozzle of required moulding consistent; The inner wall shape of described high rigidity elasticity jacket is consistent with the outer wall shape of the long nozzle of required moulding; Described high rigidity elasticity jacket is enclosed within described thin-walled elasticity jacket periphery, upwards bend again the lower end that is coated on high rigidity elasticity jacket after the bottom outward of described thin-walled elasticity jacket, cavity between described thin-walled elasticity jacket and high rigidity elasticity jacket forms in order to fill the die cavity of powdery blank, the described long nozzle of moulding, and described die cavity is consistent with the shape of described long nozzle; Described thin-walled elasticity bends downwards after being wrapped in rear its upper end outward of charging again, is coated on the upper end of high rigidity elasticity jacket, and the cavity between described thin-walled elasticity jacket and high rigidity elasticity jacket forms an airtight cavity.

When the utility model is used, in the cold isostatic compaction process, the described high rigidity elasticity of periods of low pressure jacket serves as the effect of rigid die, liquid in the cold isostatic press Master cylinder body sees through the mesh of described rigid support, pressure is directly acted on described thin-walled elasticity jacket, give goods large radially outside power, complete moulded products; The weak flexible physical property of the described high rigidity elasticity of high pressure phase jacket is showed, and can realize the Bidirectional-pressure to goods, not only can effectively avoid goods the concentrated comparatively homogeneous of density that makes of stress to occur; And micro-contraction of goods profile, after having guaranteed to complete compacting, described high rigidity elasticity jacket automatically separates and is easy to depanning with goods.

A kind of long nozzle mould the utility model proposes, high rigidity elasticity jacket can make goods obtain outside and inside bidirection press in pressing process simultaneously, effectively avoids stress to concentrate the defect density caused; Simultaneously high rigidity elasticity jacket has lighter quality and the characteristic of automatically separating with goods, reduce the workman labour intensity; In addition, the utility model can be processed and obtain a kind of long nozzle of exempting from the Vehicle Processing profile with good homogeneity, has effectively saved raw material and energy consumption.

The accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of rigid support in the utility model;

Fig. 3 is pressurized schematic diagram of the present utility model.

In figure: 1, rigid support, 2, thin-walled elasticity jacket, 3, high rigidity elasticity jacket, 4, the powdery blank.

The specific embodiment

With specific embodiment, the utility model is described in further detail by reference to the accompanying drawings, but not as to restriction of the present utility model.

As shown in Figure 1, a kind of long nozzle mould, described mould includes rigid support 1, thin-walled elasticity jacket 2 and high rigidity elasticity jacket 3; In conjunction with Fig. 2, described rigid support 1 adopts metal material to make, and on the wall of described rigid support 1 for cavity structure and described rigid support 1, has a plurality of meshes, uses so that liquid flows out; Described thin-walled elasticity jacket 2 is enclosed within the outer surface of rigid support 1 and fits tightly with rigid support 1, described thin-walled elasticity jacket 2 and described rigid support 1 in conjunction with after outer surface and the inner wall shape of the long nozzle of required moulding consistent; Described thin-walled elasticity jacket 2 adopts the flexible material with higher elasticity to make, and as rubber, polyurethane, polytetrafluoroethylene (PTFE) etc., hardness is not more than Shao A50 usually, and thickness is not more than 3mm; The inner wall shape of described high rigidity elasticity jacket 3 is consistent with the outer wall shape of the long nozzle of required moulding; Described high rigidity elasticity jacket 3 is enclosed within described thin-walled elasticity jacket 2 peripheries, upwards bend again the lower end that is coated on high rigidity elasticity jacket after the bottom outward of described thin-walled elasticity jacket 2, cavity between described thin-walled elasticity jacket 2 and high rigidity elasticity jacket 3 forms in order to fill the die cavity of powdery blank 4, the described long nozzle of moulding, and described die cavity is consistent with the shape of described long nozzle; Described thin-walled elasticity jacket 2 is bending downwards again after its upper end outward after charging, is coated on the upper end of high rigidity elasticity jacket 3, and the cavity between described thin-walled elasticity jacket and high rigidity elasticity jacket forms an airtight cavity; Described high rigidity elasticity jacket 3 adopts the weak elastomeric material with higher hardness to make, and as polyurethane, polytetrafluoroethylene (PTFE) etc., hardness range is Shao D42-50 usually, and thickness range is 15-30mm.The high strength of high rigidity elasticity jacket 3 can be served as rigid die in order to the periods of low pressure in the cold isostatic compaction process, and the weak elasticity of high rigidity elasticity jacket 3 can be carried out Bidirectional-pressure to goods at the high pressure phase of cold isostatic compaction process.

In use, its concrete implementation step is as follows for the utility model:

The first step, be fitted in described rigid support 1 outer surface by described thin-walled elasticity jacket 2;

Second step, be positioned over described thin-walled elasticity jacket 2 outsides by described high rigidity elasticity jacket 3, turned up in the bottom of described thin-walled elasticity jacket 2, closely is coated on the bottom outside of described high rigidity elasticity jacket 3, and after-applied locking;

The 3rd step, described powdery blank 4 is packed into to jolt ramming in the die cavity formed by described thin-walled elasticity jacket 2 and described high rigidity elasticity jacket 3, then turned up in the top of described thin-walled elasticity jacket 2, closely be coated on the upper outside of described high rigidity elasticity jacket 3 and apply locking, completing the dress mold process and carry out the isostatic cool pressing compacting.After having suppressed, described thin-walled elasticity jacket 2 all is returned to ortho states with described high rigidity elasticity jacket 3 to be separated automatically with goods, and after removing locking, goods can lift depanning easily.

Claims

1. a long nozzle mould, it is characterized in that: described mould includes rigid support (1), thin-walled elasticity jacket (2) and high rigidity elasticity jacket (3); There are a plurality of meshes on the wall of the rigid support of being made by metal material (1) for cavity structure and described rigid support (1); Described thin-walled elasticity jacket (2) is enclosed within the outer surface of rigid support (1) and fits tightly with rigid support, described thin-walled elasticity jacket (2) and described rigid support (1) in conjunction with after outer surface and the inner wall shape of the long nozzle of required moulding consistent; The inner wall shape of described high rigidity elasticity jacket (3) is consistent with the outer wall shape of the long nozzle of required moulding; Described high rigidity elasticity jacket (3) is enclosed within described thin-walled elasticity jacket (2) periphery, upwards bend again the lower end that is coated on high rigidity elasticity jacket after the bottom outward of described thin-walled elasticity jacket (2), cavity between described thin-walled elasticity jacket (2) and high rigidity elasticity jacket (3) forms in order to fill the die cavity of powdery blank, the described long nozzle of moulding, and described die cavity is consistent with the shape of described long nozzle; Described thin-walled elasticity jacket (2) is bending downwards again after its upper end outward after charging, be coated on the upper end of high rigidity elasticity jacket (3), the cavity between described thin-walled elasticity jacket (2) and high rigidity elasticity jacket (3) forms an airtight cavity.