CN205324589U

CN205324589U - Seven three passage upset forging's of heating end upsetting device

Info

Publication number: CN205324589U
Application number: CN201620033607.4U
Authority: CN
Inventors: 邵国栋; 杜学斌; 徐能惠; 高璐; 任明杰
Original assignee: China National Heavy Machinery Research Institute Co Ltd
Current assignee: China National Heavy Machinery Research Institute Co Ltd
Priority date: 2016-01-14
Filing date: 2016-01-14
Publication date: 2016-06-22
Anticipated expiration: 2026-01-14

Abstract

The utility model provides a seven three passage upset forging's of heating end upsetting device, include and thicken a heating furnace, no. Two heating furnaces, no. Three heating furnaces, a thickening host computer, no. Four heating furnaces, no. Five heating furnaces, no. Two thickening host computers, no. Six heating furnaces, no. Seven heating furnaces, no. Three thickening host computers that the direction set gradually gradually along the pipe end. The quality of pipe end when upset forging can be guaranteed to this device.

Description

A kind of pipe end thickening device of seven heating three passage upsettings

Technical field

This utility model belongs to pipe end and thickeies technical field, is specifically related to the pipe end thickening device of a kind of seven heating three passage upsettings。

Background technology

Including the oil pipe general work inclement condition of drilling rod, it is desirable to have high bonding strength, general steel tube end part screw thread part needs to thicken。The end upsetting of the oil pipes such as drilling rod is that Steel for Petroleum Drill Pipes pipe carries out local heating, making internal diameter, external diameter that a degree of change to occur, thus increasing end wall thickness, strengthening the process of its bonding strength。The mode of heating of drill rocker end upsetting is the heating of pipe end local, and mode of texturing is the poly-material in end, and the length of pipe is very big, and the length of shaped portion is much smaller compared with the length of non-shaped part, and the deflection of forming process is relatively big, the easy unstability of material。The end upsetting of heavy weight drill pipe is compared with the end upsetting of common middle small dimension drilling rod, and deflection is bigger, thickeies changeover portion and is more difficult to molding。

The deflection needed during due to drill rocker end upsetting is relatively larger, and only once upsetting is difficult to produce the thickening profiled section meeting requirement。Therefore, at present, the production of oil drill rocker cools down after having thickeied frequently with every time, reconditioning, then thicken, cool down again, the traditional handicraft of reconditioning again。This mode of production goes for common drill rocker end upsetting reluctantly, but the deflection in heavy weight drill pipe end upsetting process is bigger comparatively speaking, wall thickness increases more, and therefore traditional mode of production is for may result in the distinct issues such as productivity ratio is low, energy consumption is high, product lumber recovery is low in the drilling rod production of big specification。

Utility model content

The purpose of this utility model is to overcome lumber recovery in prior art heavy weight drill pipe pipe end upsetting process low, the shortcoming that energy consumption is high。

For this, this utility model provides the pipe end thickening device of a kind of seven heating three passage upsettings, including thickening a heating furnace, No. two heating furnaces, No. three heating furnaces, thickening main frame, No. four heating furnaces, No. five heating furnaces, No. two thickening main frames, No. six heating furnaces, No. seven heating furnaces, No. three thickening main frames that direction sets gradually gradually along pipe end；

A described heating furnace, No. two heating furnaces and No. three heating furnaces are located on a car body, described No. four heating furnaces and No. five heating furnaces are located on No. two car bodies, described No. six heating furnaces and No. seven heating furnaces are located on No. three car bodies, and a described car body, No. two car bodies, No. three car bodies are by hydraulic oil cylinder driving。

A described heating furnace is the frequency induction heater of frequency-adjustable to No. seven heating furnaces。

A described heating furnace, No. three heating furnaces and No. five heating furnaces are equipped with temperature measuring equipment and heating-up temperature closed-loop control system。

The beneficial effects of the utility model are:

Heating-up temperature is controlled by adjustment power and restriction heat time heating time by this utility model in pipe end heating process, and adopt temperature measuring equipment to measure steel pipe Heating Zone Temperature, it is in keeping warm mode when reaching the stopping heating of design temperature post-heating stove, prevent steel pipe burning, therefore can ensure that the pipe end quality when upsetting。

This utility model controls the rocker end upsetting method of mode of heating and three upsetting molding by continuous print gradient, not only increase the lumber recovery during drill rocker end upsetting produces, and greatly reduce repeatedly the oxide skin newly increased in heating cooling procedure, avoid invalid Repeat-heating additionally, due to without cooling procedure, decrease energy consumption。

It is described in further details below in conjunction with accompanying drawing。

Accompanying drawing explanation

Fig. 1 is front view of the present utility model。

In figure: 1 a, heating furnace；2, No. two heating furnaces；3, No. three heating furnaces；4, a thickening main frame；5, No. four heating furnaces；6, No. five heating furnaces；7, No. two thickening main frames；8, No. six heating furnaces；9, No. seven heating furnaces；10, No. three thickening main frames；11, a car body；12, No. two car bodies；13, No. three car bodies。

Detailed description of the invention

Embodiment 1:

Present embodiments provide the pipe end thickening device of a kind of seven heating three passage upsettings as shown in Figure 1, including thickening a heating furnace, No. two heating furnaces, No. three heating furnaces, thickening main frame, No. four heating furnaces, No. five heating furnaces, No. two thickening main frames, No. six heating furnaces, No. seven heating furnaces, No. three thickening main frames that direction sets gradually gradually along pipe end；

This utility model is arranged side by side three thickening main frames, by reasonable mould in end upsetting process, in thickening process, pipe end wall thickness gradually increases, it is possible to solving wall thickness in heavy weight drill pipe thickening process increases pipe end unconfinement district that many, deflection causes the greatly destabilization problems in upsetting。

Embodiment 2:

On the basis of embodiment 1, present embodiments provide a kind of rocker end upsetting method, comprise the steps:

The first step, after drill rod pipe end delivers to a working position corresponding to heating furnace, a car body runs to pipe end, drives a heating furnace to advance and entangles drill rod end, by room temperature, pipe end is heated to 550 DEG C, and a car body returns stopping heating；

Second step, after No. two heating furnace working positions delivered to by steel pipe, a car body runs and drives No. two heating furnaces advances to entangle drill rod end, and from 500 DEG C, pipe end is heated to 950 DEG C, and a car body returns stopping heating；

3rd step, after No. three heating furnace working positions delivered to by steel pipe, a car body runs and drives No. three heating furnaces advances to entangle drill rod end, and pipe end is heated to 1250 DEG C ± 10 DEG C from 900 DEG C by No. three heating furnaces, and a car body returns stopping heating；

4th step, steel pipe is delivered to No. one and is thickeied host work position, and pipe end carries out the first passage upsetting；

5th step, No. four heating furnace working positions delivered to by steel pipe, and from 500 DEG C, pipe end is heated to 950 DEG C；

6th step, No. five heating furnace working positions delivered to by steel pipe, and from 900 DEG C, pipe end is heated to 1250 DEG C ± 10 DEG C；

7th step, steel pipe is delivered to No. two and is thickeied host work position, and pipe end carries out the second passage upsetting；

8th step, No. six heating furnace working positions delivered to by steel pipe, and from 500 DEG C, pipe end is heated to 950 DEG C；

9th step, No. seven heating furnace working positions delivered to by steel pipe, and from 900 DEG C, pipe end is heated to 1250 DEG C ± 10 DEG C；

Tenth step, steel pipe is delivered to No. three thickening host work positions and is carried out last upsetting, completes end upsetting。

This utility model adopts continuous print " 3+2+2 " combined heated mode stage by stage, not only increase the lumber recovery during drill rocker end upsetting produces, and greatly reduce repeatedly the oxide skin newly increased in heating cooling procedure, ensure that the beat of production line, and the heating before the second passage and the 3rd passage upsetting below make use of the waste heat of front passage, improve heat utilization rate, decrease energy consumption。

Exemplified as above is only to illustration of the present utility model, is not intended that the restriction to protection domain of the present utility model, every belongs within protection domain of the present utility model with the same or analogous design of this utility model。

Claims

1. the pipe end thickening device of seven heating three passage upsettings, it is characterised in that: include thickening a heating furnace, No. two heating furnaces, No. three heating furnaces, thickening main frame, No. four heating furnaces, No. five heating furnaces, No. two thickening main frames, No. six heating furnaces, No. seven heating furnaces, No. three thickening main frames that direction sets gradually gradually along pipe end；

2. the pipe end thickening device of a kind of seven heating three passage upsettings according to claim 1, it is characterised in that: a described heating furnace is the frequency induction heater of frequency-adjustable to No. seven heating furnaces。

3. the pipe end thickening device of a kind of seven heating three passage upsettings according to claim 1, it is characterised in that: a described heating furnace, No. three heating furnaces and No. five heating furnaces are equipped with temperature measuring equipment and heating-up temperature closed-loop control system。