CN201534198U

CN201534198U - Bending forming die for reducing trouser-shaped tee

Info

Publication number: CN201534198U
Application number: CN2009201801124U
Authority: CN
Inventors: 邓伟; 赵卫忠; 黄桂清; 刘建勋
Original assignee: JIANGYIN HAILU METALLURGY EQUIPMENT CO Ltd
Current assignee: WUXI XIANGLONG ENVIRONMENT PROTECTION TECHNOLOGY CO., LTD.
Priority date: 2009-10-26
Filing date: 2009-10-26
Publication date: 2010-07-28
Anticipated expiration: 2019-10-26

Abstract

The utility model relates to a bending forming die for a reducing trouser-shaped tee, which comprises a bending forming upper die (7), two bending forming lower dies (8), a bending forming lower correction die (9) and a bending forming base (10). The bending radius of the bending forming upper die (7) is the design bending radius of the reducing trouser-shaped tee, the bending forming lower dies (8) are arranged on the left side and the right side of the bending forming upper die and adopt two pulleys with R grooves, the bending forming lower correction die (9) is arranged under the bending forming lower dies (8), the bottom of the bending forming lower correction die (9) is provided with a bending forming branch pore (91) which is matched with the diameter of the branches of the reducing trouser-shaped tee, and the bending forming lower dies (8) and the bending forming lower correction die (9) are arranged on the bending forming base (10). The utility model has the advantages of low cost, simple process and easy operation.

Description

The bending forming mould of reducing breeches tee joint

(1) technical field

The utility model relates to a kind of pipe fitting and prepares mould, especially for the preparation mould of the reducing breeches tee joint of discharge pressure liquid or gas, belongs to boiler pipe fitting processing technique field.

(2) background technology

The reducing reducing breeches tee joint is the important pipe fitting that industry pipeline engineering such as electric power, metallurgy are used, and is generally used for discharge pressure liquid or gas etc.The reducing reducing breeches tee joint is higher and will bear certain pressure as the common operating temperature of pipeline of the above-mentioned medium of transmission, therefore its mechanical performance, physicochemical property is had relatively high expectations.Can realize that for small-bore seamless T tube large-calibre seamless T shape three general rules are finished by forging machine processing or hot extrusion by cold extrusion.For the threeway of the seamless trousers shape of reducing, its geometry is than T shape threeway complexity, and difficulty of processing is bigger.Can adopt the method for cast form to some less demanding reducing breeches tee joint, but defectives such as the foundry goods interior tissue is loosened, is mingled with, pore make it be difficult to mechanical performance index and the welding difficulty that reaches higher.Also having a kind of method commonly used is to be responsible for earlier to be bent into return bend, leaves tap on bend pipe top then, and built-up welding becomes the arm profile on tap again, and machined arm inner and outer diameter reaches designing requirement.Long processing time, consume material, production cost is higher, and shaping three-way pipe internal channel is not smooth, and appearance forming and inherent quality change with workman's technical merit, therefore can not produce in batches.

(3) summary of the invention

The purpose of this utility model be to overcome above-mentioned prior art defective and provide that a kind of technology is simple, Mold Making easily, the bending forming mould of the reducing breeches tee joint that is easy to realize.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of bending forming mould of reducing breeches tee joint, described mould comprises the bending forming patrix, the bending forming counterdie, strong mould preparation and bending forming base under the bending forming, the bending radius of bending forming patrix designs bending radius for reducing breeches tee joint, the bending forming counterdie is arranged at the left and right sides of bending forming patrix, the bending forming counterdie is two pulleys that have the R groove, strong mould preparation is arranged at the below of bending forming counterdie under the bending forming, and strong mould preparation bottom is provided with the bending forming tap that the arm diameter with reducing breeches tee joint is complementary under the bending forming, and strong mould preparation all is installed on the bending forming base under described bending forming counterdie and the bending forming.

The beneficial effects of the utility model are:

It is low that the utility model drops into die cost, and technical process is simple, easy operating.Adopt the trousers shape threeway of this Mould Machining, every performance indications such as apparent size, form and position tolerance, Non-Destructive Testing, physics and chemistry test all reach the relevant criterion requirement.The utility model mould is applicable to makes Dn25mm～Dn50mm, the metallic conduit trousers shape threeway of diameter/wall thickness≤15.

(4) description of drawings

Fig. 1 is blank figure of the present utility model.

Fig. 2 is reducing T shape three-way shape blank figure of the present utility model.

Fig. 3 is reducing breeches tee joint shape blank figure of the present utility model.

Fig. 4 is reducing breeches tee joint figure of the present utility model.

The cold-extrusion shaping die face structural representation that Fig. 5 adopts for the utility model.

Fig. 6 is the side view of Fig. 5.

Fig. 7 is the A-A cut-away view of Fig. 5.

The bending forming mould Facad structure schematic diagram that Fig. 8 adopts for the utility model.

Fig. 9 is the vertical view of Fig. 8.

Description of drawings among the figure:

Strong mould preparation 9, bending forming tap 91, bending forming base 10 under hole 61, cold extrusion tap 62, bending forming patrix 7, bending forming counterdie 8, the bending forming are responsible in blank 1, reducing T shape three-way shape blank 2, reducing breeches tee joint shape blank 3, reducing breeches tee joint 4, cold-extrusion shaping patrix 5, cold-extrusion shaping counterdie 6, cold extrusion.

(5) specific embodiment

The preparation mould of a kind of reducing breeches tee joint that the utility model relates to, described mould comprises mold for extruding and forming and bending forming mould, described mold for extruding and forming comprises cold-extrusion shaping patrix 5 and cold-extrusion shaping counterdie 6, the apposition position up and down of this cold-extrusion shaping patrix 5 and cold-extrusion shaping counterdie 6 is provided with a cold extrusion and is responsible for hole 61, it is corresponding with the person in charge of described reducing breeches tee joint that hole 61 is responsible in this cold extrusion, the reducing breeches tee joint of described cold-extrusion shaping patrix 5 and cold-extrusion shaping counterdie 6 is responsible for position one side and is provided with the cold extrusion tap 62 that the arm with reducing breeches tee joint is complementary, this cold extrusion tap 62 is corresponding with the arm of described reducing breeches tee joint, 1.2～1.5 times of person in charge's bore dia that these cold extrusion tap 62 diameters are reducing breeches tee joint; Described bending forming mould comprises bending forming patrix 7, bending forming counterdie 8, strong mould preparation 9 and bending forming base 10 under the bending forming, the bending radius of bending forming patrix 7 designs bending radius for reducing breeches tee joint, bending forming counterdie 8 is arranged at the left and right sides of bending forming patrix, bending forming counterdie 8 is for having two pulleys of R groove, strong mould preparation 9 is arranged at the below of bending forming counterdie 8 under the bending forming, and strong mould preparation 9 bottoms are provided with the bending forming tap 91 that the arm diameter with reducing breeches tee joint is complementary under the bending forming, and strong mould preparation 9 all is installed on the bending forming base 10 under described bending forming counterdie 8 and the bending forming.

Its preparation process is as follows:

Step 1, select base

Select seamless steel pipe for making the blank 1 of threeway, the diameter of this seamless steel pipe is 1.1～1.3 times of reducing breeches tee joint finished product person in charge intended diameter, and wall thickness is for 1.1～1.5 times of reducing breeches tee joint finished product person in charge design wall thickness, as Fig. 1;

Step 2, cold extrusion

(Fig. 5～Fig. 7) adopt the cold extrusion of hydraulic pressure internal-expansion type makes reducing T shape three-way shape blank 2, as Fig. 2 with the cold-extrusion shaping mould on forcing press with blank 1;

Step 3, the bent type that heats

The reducing T shape three-way shape blank 2 that step 2 is made is heated to the austenitic area, on forcing press with bending forming mould (as Fig. 8, Fig. 9) with as described in the person in charge position of reducing T shape three-way shape blank 2 bend, till the upper and lower mould matched moulds of bending forming mould, make reducing breeches tee joint shape blank 3, as Fig. 3;

Step 4, machined

Remove reducing breeches tee joint shape blank 3 each end surplus that step 3 is made, and strong whole with finishing die on forcing press, and each port is carried out groove machining (cutting, chamfering are shaped) to design size, make reducing breeches tee joint 4, as Fig. 4.

The interior bloated fluid pressure that adopts in the described cold extrusion step is 200MPa～400MPa; Heating-up temperature in the bent type step of described heating is 950 ℃～1200 ℃.

Described seamless steel pipe material is carbon steel or steel alloy.

Claims

1. the bending forming mould of a reducing breeches tee joint, it is characterized in that described mould comprises bending forming patrix (7), bending forming counterdie (8), strong mould preparation (9) and bending forming base (10) under the bending forming, the bending radius of bending forming patrix (7) designs bending radius for reducing breeches tee joint, bending forming counterdie (8) is arranged at the left and right sides of bending forming patrix, bending forming counterdie (8) is for having two pulleys of R groove, strong mould preparation (9) is arranged at the below of bending forming counterdie (8) under the bending forming, and strong mould preparation (9) bottom is provided with the bending forming tap (91) that the arm diameter with reducing breeches tee joint is complementary under the bending forming, and strong mould preparation (9) all is installed on the bending forming base (10) under described bending forming counterdie (8) and the bending forming.