CN210231231U

CN210231231U - Stainless steel thermal expansion type mould for processing titanium alloy thin-wall rotating part with curved bus

Info

Publication number: CN210231231U
Application number: CN201921015076.6U
Authority: CN
Inventors: Tieping Zhang; 张铁平
Original assignee: Shenyang Liming Gas Turbine Complete Equipment Co ltd
Current assignee: Shenyang Liming Gas Turbine Complete Equipment Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-03
Anticipated expiration: 2029-07-02

Abstract

The utility model relates to a mould, concretely relates to processing generating line is stainless steel heat bulging type mould of curved titanium alloy thin wall rotating member. The technical scheme of the utility model as follows: the stainless steel hot bulging mold for processing the titanium alloy thin-wall rotating member with the curved bus is characterized in that a cylindrical cavity is arranged in the center of the mold, the shape of the section of the outer wall of the mold is consistent with that of the bus of the titanium alloy thin-wall rotating member, the maximum outer diameter of the mold is 98-99% of the maximum inner diameter of the titanium alloy thin-wall rotating member, and the maximum wall thickness of the mold is 18-20 times that of the titanium alloy thin-wall rotating member. The utility model provides a processing generating line is the stainless steel heat bulging type mould of curved titanium alloy thin wall rotating member, can guarantee the safety in production simultaneously with part accurate processing to the regulation size.

Description

Stainless steel thermal expansion type mould for processing titanium alloy thin-wall rotating part with curved bus

Technical Field

The utility model relates to a mould, concretely relates to processing generating line is stainless steel heat bulging type mould of curved titanium alloy thin wall rotating member.

Background

Parts of the components of aircraft engines are increasingly being manufactured from titanium alloy sheet materials. Its advantages are light weight and high strength. But the processing is limited, especially the cold-drawing properties are very poor. Some simple profiles can be processed by a conventional method, and the processing of the rotating part with a curved thin-wall bus can be hardly realized even if hot processing bulging and drawing are adopted.

Take a more typical molded part as an example: as shown in figure 2, the diameter of the part is about 1 meter, the height is about 1 meter, the rotating generatrix is a curve, and the thickness of the material is 1.2-1.5 mm. And the part is totally cracked by expanding by a conventional processing method, and only heating forming is adopted.

The conventional thermal expansion type tool is of a mechanical action type or an air expansion type, but the working temperature is 900 ℃, so that a plurality of problems which are difficult to solve exist under the high-temperature condition. Such as: deformation, failure, lubrication failure and detection difficulty of mechanical parts at high temperature: sealing during ballooning is difficult, temperature is not easily controlled, and there is a risk of bursting.

SUMMERY OF THE UTILITY MODEL

The utility model provides a processing generating line is stainless steel heat bulging type mould of curved titanium alloy thin wall rotating member, can guarantee the safety in production simultaneously with part accurate processing to the regulation size.

The technical scheme of the utility model as follows: the stainless steel hot bulging mold for processing the titanium alloy thin-wall rotating member with the curved bus is characterized in that a cylindrical cavity is arranged in the center of the mold, the shape of the section of the outer wall of the mold is consistent with that of the bus of the titanium alloy thin-wall rotating member, the maximum outer diameter of the mold is 98-99% of the maximum inner diameter of the titanium alloy thin-wall rotating member, and the maximum wall thickness of the mold is 18-20 times that of the titanium alloy thin-wall rotating member.

The processing process is as follows: sleeving a titanium alloy blank cylinder outside a stainless steel thermal expansion type mould, and simultaneously feeding the titanium alloy blank cylinder into a furnace to heat to 900 ℃; the stainless steel can expand about 18% when heated to 900 ℃, and the titanium alloy can expand about 6% when heated to 900 ℃; at this time, the mold and the workpiece reach the maximum size at the same time, and the hot bulging is performed. After cooling, the titanium alloy part retracts to the calculated ideal diameter size, the stainless steel mould retracts to the original state, and the titanium alloy part and the mould are completely separated.

The utility model has the advantages that: the utility model discloses a processing generating line is the stainless steel heat bulging type mould of curved titanium alloy thin wall rotating member, can guarantee the safety in production simultaneously with part accurate processing to the regulation size.

Drawings

FIG. 1 is a structural diagram of a stainless steel thermal expansion type clamping fixture for processing a titanium alloy thin-wall rotating member with a curved bus;

FIG. 2 is a view of a titanium alloy thin-wall rotating member with a curved bus;

FIG. 3 is a drawing showing the titanium alloy thin-wall rotary member and a stainless steel thermal expansion type clamping fixture in a heated state;

FIG. 4 is a schematic view of a titanium alloy thin-wall rotating member separated from a stainless steel thermal expansion type clamping fixture in a cooling state.

Detailed Description

As shown in FIG. 2, the maximum diameter of the titanium alloy thin-wall rotating member 3 is 1 m, the rotating generatrix is a curve, and the material thickness is 1.5 mm.

As shown in figure 1, a cylindrical cavity 2 is arranged in the center of a stainless steel thermal expansion type clamping fixture 1, the cross section shape of the outer wall of the clamping fixture 1 is consistent with the shape of a generatrix of a titanium alloy thin-wall rotary member 3, the maximum outer diameter of the clamping fixture 1 is 988mm, and the maximum wall thickness of the clamping fixture is 30 mm.

The processing process is as follows: sleeving a titanium alloy blank cylinder outside a stainless steel thermal expansion type clamping fixture 1, and simultaneously feeding the titanium alloy blank cylinder into a furnace to heat to 900 ℃; the stainless steel can expand about 18% when heated to 900 ℃, and the titanium alloy can expand about 6% when heated to 900 ℃; at this time, as shown in fig. 3, the mold 1 and the titanium alloy thin-walled rotary member 3 reach the maximum size at the same time, and the hot bulging is performed. As shown in fig. 4, after cooling, the titanium alloy thin-wall rotating member 3 retracts to the calculated ideal diameter size, the stainless steel mold 1 retracts to the original state, and the titanium alloy thin-wall rotating member 3 is completely separated from the mold 1.

Claims

1. The stainless steel hot bulging mold for processing the titanium alloy thin-wall rotating member with the curved bus is characterized in that a cylindrical cavity is arranged in the center of the mold, the shape of the section of the outer wall of the mold is consistent with that of the bus of the titanium alloy thin-wall rotating member, the maximum outer diameter of the mold is 98-99% of the maximum inner diameter of the titanium alloy thin-wall rotating member, and the maximum wall thickness of the mold is 18-20 times of that of the titanium alloy thin-wall rotating member.