CN104786006A - Manufacturing method for titanium plate plugs - Google Patents

Manufacturing method for titanium plate plugs Download PDF

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Publication number
CN104786006A
CN104786006A CN201410042783.XA CN201410042783A CN104786006A CN 104786006 A CN104786006 A CN 104786006A CN 201410042783 A CN201410042783 A CN 201410042783A CN 104786006 A CN104786006 A CN 104786006A
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socket
blank
temperature
stove
carry
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CN201410042783.XA
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Chinese (zh)
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刘熹
顾蔚枫
唐国强
潘长标
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无锡市前洲西塘锻压有限公司
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Priority to CN201410042783.XA priority Critical patent/CN104786006A/en
Publication of CN104786006A publication Critical patent/CN104786006A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23POTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

Abstract

The invention relates to a metal material machining technology and a metal material manufacturing method, in particular to a manufacturing method for titanium plate plugs. The manufacturing method comprises the steps of designing a die, wherein the diameter of an upper die press head, the diameter of an outlet of a lower die pull ring, the gap between an upper die body and a lower die body and the fillet of the lower die pull ring are calculated; conducting feeding; grinding and cleaning the die; processing blanks in an earlier stage; heating the blanks, wherein a natures gas stove is used for heating; conducting stamping forming, wherein the forming step is conducted three times; conducting press drum forming; conducting rotary press forming; cutting grooves; conducting acid dipping; conducting polishing; detecting a penetrating flaw; stacking the plugs. By the adoption of the manufacturing method for the titanium plate plugs, the stamping process is stable, deformation is even and smooth, the determined hot working system is feasible, the technological parameters are reasonable, the workpiece size is well controlled, metal streamline distribution is reasonable, and the performance is stable.

Description

A kind of manufacture method of titanium sheet material end socket

Technical field

The present invention relates to a kind of metal material processing technique manufacturing method, particularly a kind of manufacture method of titanium sheet material end socket.

Background technology

Titanium plate is a kind of excellent structural timber, and along with the expansion year by year of its consumption, the application in the processing and manufacturing of various engineering structure and equipment gets more and more.Due to the yield strength of titanium plate and tensile strength close, the ratio of yield limit and elastic modelling quantity is large, there is plastic deformation difference during cold forming, easy to crack, and screen resilience is large, the shortcomings such as thermoforming temperatures narrow range, easily absorption pernicious gas, make its formed machining more difficult, if method is improper or technique is unreasonable, workpiece is often caused to meet technical requirement, be shaped comparatively difficulty, as easy as rolling off a logly causes problems such as tearing during shaping, causes and scrap.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, thus provide a kind of manufacture method of titanium sheet material end socket, punching course is stablized, be out of shape even, smooth and easy, the hot-working system determined is feasible, and technological parameter is reasonable, workpiece size controls better, and metal streamline distribution is reasonable, stable performance.

According to technical scheme provided by the invention, a kind of manufacture method of titanium sheet material end socket, comprising:

(1), Design of Dies: during Design of Dies, larger factor is affected mainly to forming process and product size: patrix pressure head diameter D 1, counterdie draw ring outlet diameter D 2, the gap Z of upper and lower intermode, counterdie draw ring fillet R selects;

Patrix: the end socket after punching press is in cooling procedure, and metal contracts, makes end socket diameter reduce.Therefore, during patrix design, the size of patrix pressure head diameter should suitably be strengthened.Patrix pressure head diameter D 1=Do (1+ ε %), in formula: Do is end socket theoretical diameter, ε is the average shrinkage amount of end socket diameter, gets 0.5 ~ 0.8%.Upper mold materials: cast steel;

Counterdie: main consideration counterdie draw ring outlet diameter D 2with counterdie draw ring fillet R, they ensure the critical size carried out smoothly that is shaped.Counterdie draw ring outlet diameter D 2=D 1+ 2Z, Z are the gap of upper and lower intermode.The factor such as amount of swelling on the nominal thickness of blank, the plus tolerance of sotck thinkness and shaping rear head top is depended in the determination of Z value.Size the counting for much to forming quality of Z and R value.Z, R are too small, radial drawing power when making shaping increased, stretch forming difficulty, and the Reducing thickness of workpiece is increased, time serious, cause workpiece to tear.Excessive Z, R, easily cause wrinkling.During design, Z=1.06t, R=(2.5 ~ 3.5) t, t are blank thickness of slab.Lower mold materials: internal mold cast iron, outer moulded steel;

(2), blanking: by circular blank under required titanium plate numerical control plasma flame cutting machine, as the blank of shaping titanium sheet material end socket;

(3), Mold polishing cleaning: before compacting, polishing cleaning is carried out to mould;

(4), blank process in early stage: blank edge need be polished cleaning, the oxidation produced during removal periphery gas flame cuttiug and all burrs; Surperficial edge carried out cutting oblique process before blank punching press, angle of splaying is 3 ~ 4 °, and the maximum thickness of pruning of edge is 10% of sotck thinkness; Need the removing surface of titanium plate blank material clean before heating, and apply borosilicate lubricant, the dual coating amount of borosilicate lubricant is: 100 ~ 200g/m 2, during coating, borosilicate lubricant temperature is 5 ~ 25 DEG C;

(5), heat: adopt gas furnace heating, in stove, pad puts corrosion resistant plate, pass through cold preformed blank for the first time and enter stove when in-furnace temperature 150 ~ 200 DEG C, then programming rate in stove is controlled at 180 ~ 200 DEG C/h, be warming up to 500 ~ 700 DEG C, blank is through-thickness 1.2 ~ 2.5min/mm in the stove inside holding time, and final pressure temperature controls at 400 ~ 600 DEG C;

(6), stamping: forming technology adopts three shapings, cold preform for the first time, blank carries out punching press under normal temperature state, 60 ~ 62% of pressing seal head shaping total height, then heating in stove will be sent into through first time cold preformed blank, be heated to blank temperature and reach 500 ~ 700 DEG C, carry out the hot preform of second time, 73 ~ 75% of pressing seal head shaping total height, and then blank sent in stove heat, be heated to blank temperature and reach 450 ~ 650 DEG C, carry out the shaping eventually of third time heat, guarantee that final pressure temperature remains on 400 ~ 600 DEG C, 100% of pressing seal head shaping total height,

(7), drum pressure is shaped: make end socket temperature maintenance carry out drum pressure operation under the state of 100 ~ 500 DEG C, repeatedly enter stove heating, repeatedly drum pressure, from the edge of disk, by die head and disk alignment, the disk that rotarily drives constantly by controlling swiveling wheel rotates, and suppresses in a certain order;

(8), mould pressing: for the formation of angle, end socket garden and straight flange, end socket temperature maintenance is made to carry out spinning operation under the state of 100 ~ 500 DEG C, with 3 ~ 6 volley of rifle fire flame projectors, heating and thermal insulation is at equal intervals carried out to end socket, guarantee titanium sheet material temperature all the time in 100 ~ 500 DEG C of safe rangies;

(9), bevel cut: select plasma cut form to carry out retaining wall on slope, before bevel cut, end socket is calibrated by shape face, determine cutting-height again, bevel cut front head inwall smears limewash, cutting splashing is prevented to be bonded on titanium sheet material, after bevel cut, polishing light is carried out to groove, remove all cutting residues;

(10), pickling processes: formed head is carried out pickling, remove the dirt such as welding slag, slag, greasy dirt, oxide skin on surface, hydrochloric acid solution is evenly filled end socket outer surface, concentration of hydrochloric acid: 7 ~ 19%, pickling time: 15 ~ 30 minutes, re-use a large amount of clear water to rinse, form one deck passivating film on surface;

(11), polish: the scuffing on end socket and other defect, carry out grinding process;

(12), penetrant inspection detects: to end socket defects detection, be up to the standards product putting in storage;

(13), end socket is stacking: corrugated paper must be used to carry out dottle pin between each end socket between titanium sheet material end socket, prevents jolting and cause the secondary of end socket to scratch in transit.

The invention has the beneficial effects as follows: the manufacture method of a kind of titanium sheet material end socket provided by the invention, punching course is stablized, and is out of shape even, smooth and easy, the hot-working system determined is feasible, and technological parameter is reasonable, and workpiece size controls better, metal streamline distribution is reasonable, stable performance; Workpiece diameter is consistent with die head diameter, and when punching press, the stickiness of workpiece and mould is good, and the contraction after workpiece punching press is little; Maximum thinning place after component shaping appears at bottom workpiece, and the direction along bottom to upper end diminishes gradually, be about 100mm place at distance workpiece upper end-face edge to start to thicken, its maximum reduction is 9.45%, meets the requirement of reduction≤15% in CD130-87 " titanium equipment technical conditions ".

Accompanying drawing explanation

Fig. 1 is titanium sheet material end socket product schematic diagram.

Fig. 2 is titanium sheet material seal head forming schematic diagram.

In Fig. 2: 1. patrix, 2. titanium sheet material blank, 3. counterdie.Die assembly, on special hydraulic press, is made up of upper die and lower die, and the titanium plate circular blank heated during shaping puts into counterdie top cavity, and the descending extrusion billet of patrix is configured as Seal head blank.

Detailed description of the invention:

Below in conjunction with specific embodiment, the invention will be further described.

Embodiment 1

The present invention is applied to the TA1 titanium plate end socket of ¢ 1962/90mm specification, and detailed description of the invention is as follows:

(1), Design of Dies: end socket diameter 1962mm, wall thickness 90mm, according to formulae discovery patrix pressure head diameter D 1get 1972mm, counterdie draw ring outlet diameter D 2get 2163mm, the gap Z of upper and lower intermode gets 95.4mm, and counterdie draw ring fillet R gets 225mm;

(2), blanking: adopt numerical control plasma flame cutting machine blanking, titanium plate billet size is D=3160mm;

(3), Mold polishing cleaning: before compacting, polishing cleaning is carried out to mould;

(4), blank process in early stage: blank edge need be polished cleaning, the oxidation produced during removal periphery gas flame cuttiug and all burrs; Surperficial edge carried out cutting oblique process before blank punching press, angle of splaying is 3 °, and the maximum thickness of pruning of edge is 9mm; Need the removing surface of titanium plate blank material clean before heating, and apply lubricant, the lubricant of coating is the borosilicate lubricant that Beijing Tianlichuang Glass Technology Development Co., Ltd. produces, and the dual coating amount of borosilicate lubricant is: 100g/m 2, during coating, borosilicate lubricant temperature is 5 DEG C;

(5), heating: heat with gas furnace, gas heating furnace model 6000 × 5600 × 2500mm, Nanjing Zhengguang Furnace Industry Co., Ltd. of manufacturer.In stove, pad puts corrosion resistant plate, and enter stove through first time when cold preformed blank is in-furnace temperature 150 DEG C, then controlled by programming rate in stove, at 180 DEG C/h, to be warming up to 500 DEG C, blank is 108min in the stove inside holding time, and final pressure temperature controls at 400 DEG C;

(6), stamping: pressing equipment is four-column hydraulic press, model: 1300T, Jiangsu Zhongwei Heavy Industry Machinery Co., Ltd. of manufacturer.Adopt three shapings, cold preform for the first time, blank carries out punching press under normal temperature state, 60% of pressing seal head shaping total height, then heating in stove will be sent into through first time cold preformed blank, be heated to blank temperature and reach 500 DEG C, carry out the hot preform of second time, 73% of pressing seal head shaping total height, and then blank sent in stove heat, be heated to blank temperature and reach 450 DEG C, carry out third time heat and be shaped eventually, guarantee that final pressure temperature remains on 400 DEG C, 100% of pressing seal head shaping total height;

(7), drum pressure is shaped: make end socket temperature maintenance carry out drum pressure operation under the state of 100 DEG C, repeatedly enter stove heating, repeatedly drum pressure, from the edge of disk, by die head and disk alignment, the disk that rotarily drives constantly by controlling swiveling wheel rotates, and suppresses in a certain order;

(8), mould pressing: for the formation of angle, end socket garden and straight flange, make end socket temperature maintenance carry out spinning operation under the state of 100 DEG C, with 3 volley of rifle fire flame projectors, heating and thermal insulation is at equal intervals carried out to end socket, guarantee that titanium sheet material temperature is all the time at 100 DEG C;

(9), bevel cut: select plasma cut form to carry out retaining wall on slope, before bevel cut, end socket is calibrated by shape face, determine cutting-height again, bevel cut front head inwall smears limewash, cutting splashing is prevented to be bonded on titanium sheet material, after bevel cut, polishing light is carried out to groove, remove all cutting residues;

(10), pickling processes: formed head is carried out pickling, remove the dirt such as welding slag, slag, greasy dirt, oxide skin on surface, hydrochloric acid solution is evenly filled end socket outer surface, concentration of hydrochloric acid: 7%, pickling time: 15 minutes, re-use a large amount of clear water to rinse, form one deck passivating film on surface;

(11), polish: the scuffing on end socket and other defect, carry out grinding process;

(12), penetrant inspection detects: to end socket defects detection, be up to the standards product putting in storage;

(13), end socket is stacking: corrugated paper must be used to carry out dottle pin between each end socket between titanium sheet material end socket, prevents jolting and cause the secondary of end socket to scratch in transit.

The appearance and size of the TA1 titanium plate dome head of the ¢ 1962/90mm specification be shaped and wall thickness are measured, the results are shown in following table:

Dimension control and wall thickness measuring result table

The inventive method, punching course is stablized, and be out of shape even, smooth and easy, the hot-working system determined is feasible, and technological parameter is reasonable, and workpiece size controls better, and metal streamline distributes rationally, stable performance; Workpiece diameter is consistent with die head diameter, and when punching press, the stickiness of workpiece and mould is good, and the contraction after workpiece punching press is little; Maximum thinning place after component shaping appears at bottom workpiece, and the direction along bottom to upper end diminishes gradually, be about 100mm place at distance workpiece upper end-face edge to start to thicken, its maximum reduction is 9.45%, meets the requirement of reduction≤15% in CD130-87 " titanium equipment technical conditions ".

Embodiment 2

The present invention is applied to the TA1 titanium plate end socket of ¢ 2400/90mm specification, and detailed description of the invention is as follows:

(1), Design of Dies: end socket diameter 2400mm, wall thickness 90mm, according to the formulae discovery patrix pressure head diameter D of technical scheme 1get 2419mm, counterdie draw ring outlet diameter D 2get 2610mm, the gap Z of upper and lower intermode gets 95.4mm, and counterdie draw ring fillet R gets 315mm;

(2), blanking: adopt numerical control plasma flame cutting machine blanking, titanium plate billet size is D=3326mm;

(3), Mold polishing cleaning: before compacting, polishing cleaning is carried out to mould;

(4), blank process in early stage: blank edge need be polished cleaning, the oxidation produced during removal periphery gas flame cuttiug and all burrs; Surperficial edge carried out cutting oblique process before blank punching press, angle of splaying is 4 °, and the maximum thickness of pruning of edge is 9mm; Need the removing surface of titanium plate blank material clean before heating, and apply lubricant, the lubricant of coating is the borosilicate lubricant that Beijing Tianlichuang Glass Technology Development Co., Ltd. produces, and the dual coating amount of borosilicate lubricant is: 200g/m 2, during coating, borosilicate lubricant temperature is 25 DEG C;

(5), heating: heat with gas furnace, gas heating furnace model 6000 × 5600 × 2500mm, Nanjing Zhengguang Furnace Industry Co., Ltd. of manufacturer.In stove, pad puts corrosion resistant plate, and enter stove through first time when cold preformed blank is in-furnace temperature 200 DEG C, then controlled by programming rate in stove, at 200 DEG C/h, to be warming up to 700 DEG C, blank is 225min in the stove inside holding time, and final pressure temperature controls at 600 DEG C;

(6), stamping: pressing equipment is four-column hydraulic press, model: 1300T, Jiangsu Zhongwei Heavy Industry Machinery Co., Ltd. of manufacturer.Adopt three shapings, cold preform for the first time, blank carries out punching press under normal temperature state, 62% of pressing seal head shaping total height, then heating in stove will be sent into through first time cold preformed blank, be heated to blank temperature and reach 700 DEG C, carry out the hot preform of second time, 75% of pressing seal head shaping total height, and then blank sent in stove heat, be heated to blank temperature and reach 650 DEG C, carry out third time heat and be shaped eventually, guarantee that final pressure temperature remains on 600 DEG C, 100% of pressing seal head shaping total height;

(7), drum pressure is shaped: make end socket temperature maintenance carry out drum pressure operation under the state of 100 DEG C, repeatedly enter stove heating, repeatedly drum pressure, from the edge of disk, by die head and disk alignment, the disk that rotarily drives constantly by controlling swiveling wheel rotates, and suppresses in a certain order;

(8), mould pressing: for the formation of angle, end socket garden and straight flange, make end socket temperature maintenance carry out spinning operation under the state of 500 DEG C, with 6 volley of rifle fire flame projectors, heating and thermal insulation is at equal intervals carried out to end socket, guarantee that titanium sheet material temperature is all the time at 500 DEG C;

(9), bevel cut: select plasma cut form to carry out retaining wall on slope, before bevel cut, end socket is calibrated by shape face, determine cutting-height again, bevel cut front head inwall smears limewash, cutting splashing is prevented to be bonded on titanium sheet material, after bevel cut, polishing light is carried out to groove, remove all cutting residues;

(10), pickling processes: formed head is carried out pickling, remove the dirt such as welding slag, slag, greasy dirt, oxide skin on surface, hydrochloric acid solution is evenly filled end socket outer surface, concentration of hydrochloric acid: 19%, pickling time: 30 minutes, re-use a large amount of clear water to rinse, form one deck passivating film on surface;

(11), polish: the scuffing on end socket and other defect, carry out grinding process;

(12), penetrant inspection detects: to end socket defects detection, be up to the standards product putting in storage;

(13), end socket is stacking: corrugated paper must be used to carry out dottle pin between each end socket between titanium sheet material end socket, prevents jolting and cause the secondary of end socket to scratch in transit.

Embodiment 3

The present invention is applied to the TA1 titanium plate end socket of ¢ 2066/90mm specification, and detailed description of the invention is as follows:

(1), Design of Dies: end socket diameter 2066mm, wall thickness 90mm, according to the formulae discovery patrix pressure head diameter D of technical scheme 1get 2078mm, counterdie draw ring outlet diameter D 2get 2269mm, the gap Z of upper and lower intermode gets 95.4mm, and counterdie draw ring fillet R gets 270mm;

(2), blanking: adopt numerical control plasma flame cutting machine blanking, titanium plate billet size is D=3326mm;

(3), Mold polishing cleaning: before compacting, polishing cleaning is carried out to mould;

(4), blank process in early stage: blank edge need be polished cleaning, the oxidation produced during removal periphery gas flame cuttiug and all burrs; Surperficial edge carried out cutting oblique process before blank punching press, angle of splaying is 3.5 °, and the maximum thickness of pruning of edge is 9mm; Need the removing surface of titanium plate blank material clean before heating, and apply lubricant, the lubricant of coating is the borosilicate lubricant that Beijing Tianlichuang Glass Technology Development Co., Ltd. produces, and the dual coating amount of borosilicate lubricant is: 150g/m 2, during coating, borosilicate lubricant temperature is 15 DEG C;

(5), heating: heat with gas furnace, gas heating furnace model 6000 × 5600 × 2500mm, Nanjing Zhengguang Furnace Industry Co., Ltd. of manufacturer.In stove, pad puts corrosion resistant plate, and enter stove through first time when cold preformed blank is in-furnace temperature 180 DEG C, then controlled by programming rate in stove, at 190 DEG C/h, to be warming up to 650 DEG C, blank is 180min in the stove inside holding time, and final pressure temperature controls at 500 DEG C;

(6), stamping: pressing equipment is four-column hydraulic press, model: 1300T, Jiangsu Zhongwei Heavy Industry Machinery Co., Ltd. of manufacturer.Adopt three shapings, cold preform for the first time, blank carries out punching press under normal temperature state, 61% of pressing seal head shaping total height, then heating in stove will be sent into through first time cold preformed blank, be heated to blank temperature and reach 650 DEG C, carry out the hot preform of second time, 74% of pressing seal head shaping total height, and then blank sent in stove heat, be heated to blank temperature and reach 550 DEG C, carry out third time heat and be shaped eventually, guarantee that final pressure temperature remains on 500 DEG C, 100% of pressing seal head shaping total height;

(7), drum pressure is shaped: make end socket temperature maintenance carry out drum pressure operation under the state of 300 DEG C, repeatedly enter stove heating, repeatedly drum pressure, from the edge of disk, by die head and disk alignment, the disk that rotarily drives constantly by controlling swiveling wheel rotates, and suppresses in a certain order;

(8), mould pressing: for the formation of angle, end socket garden and straight flange, make end socket temperature maintenance carry out spinning operation under the state of 300 DEG C, with 4 volley of rifle fire flame projectors, heating and thermal insulation is at equal intervals carried out to end socket, guarantee that titanium sheet material temperature is all the time at 300 DEG C;

(9), bevel cut: select plasma cut form to carry out retaining wall on slope, before bevel cut, end socket is calibrated by shape face, determine cutting-height again, bevel cut front head inwall smears limewash, cutting splashing is prevented to be bonded on titanium sheet material, after bevel cut, polishing light is carried out to groove, remove all cutting residues;

(10), pickling processes: formed head is carried out pickling, remove the dirt such as welding slag, slag, greasy dirt, oxide skin on surface, hydrochloric acid solution is evenly filled end socket outer surface, concentration of hydrochloric acid: 13%, pickling time: 25 minutes, re-use a large amount of clear water to rinse, form one deck passivating film on surface;

(11), polish: the scuffing on end socket and other defect, carry out grinding process;

(12), penetrant inspection detects: to end socket defects detection, be up to the standards product putting in storage;

(13), end socket is stacking: corrugated paper must be used to carry out dottle pin between each end socket between titanium sheet material end socket, prevents jolting and cause the secondary of end socket to scratch in transit.

Claims (1)

1. a manufacture method for titanium sheet material end socket, is characterized in that manufacture method comprises:
(1), Design of Dies: patrix pressure head diameter D 1, counterdie draw ring outlet diameter D 2, the gap Z of upper and lower intermode, counterdie draw ring fillet R determines according to following formula:
Patrix pressure head diameter D 1=Do (1+ ε %), numerical value rounds, unit: mm.Upper mold materials: cast steel;
Counterdie draw ring outlet diameter D 2=D 1+ 2Z, numerical value rounds, unit: mm.Lower mold materials: internal mold cast iron, outer moulded steel;
Z=1.06t, unit: mm;
R=(2.5 ~ 3.5) t, unit: mm;
In formula: Do is end socket theoretical diameter, unit: mm;
ε is the average shrinkage amount of end socket diameter, gets 0.5 ~ 0.8%;
T is blank thickness of slab, and actual numerical value rounds, unit: mm;
(2), blanking: by circular blank under required titanium plate numerical control plasma flame cutting machine, as the blank of shaping titanium sheet material end socket;
(3), Mold polishing cleaning: before compacting, polishing cleaning is carried out to mould;
(4), blank process in early stage: blank edge need be polished cleaning, the oxidation produced during removal periphery gas flame cuttiug and all burrs; Surperficial edge carried out cutting oblique process before blank punching press, angle of splaying is 3 ~ 4 °, and the maximum thickness of pruning of edge is 10% of sotck thinkness; Need the removing surface of titanium plate blank material clean before heating, and apply borosilicate lubricant, the dual coating amount of borosilicate lubricant is: 100 ~ 200g/m 2, during coating, borosilicate lubricant temperature is 5 ~ 25 DEG C;
(5), heat: adopt gas furnace heating, in stove, pad puts corrosion resistant plate, pass through cold preformed blank for the first time and enter stove when in-furnace temperature 150 ~ 200 DEG C, then programming rate in stove is controlled at 180 ~ 200 DEG C/h, be warming up to 500 ~ 700 DEG C, blank is through-thickness 1.2 ~ 2.5min/mm in the stove inside holding time, and final pressure temperature controls at 400 ~ 600 DEG C;
(6), stamping: forming technology adopts three shapings, cold preform for the first time, blank carries out punching press under normal temperature state, 60 ~ 62% of pressing seal head shaping total height, then heating in stove will be sent into through first time cold preformed blank, be heated to blank temperature and reach 500 ~ 700 DEG C, carry out the hot preform of second time, 73 ~ 75% of pressing seal head shaping total height, and then blank sent in stove heat, be heated to blank temperature and reach 450 ~ 650 DEG C, carry out the shaping eventually of third time heat, guarantee that final pressure temperature remains on 400 ~ 600 DEG C, 100% of pressing seal head shaping total height,
(7), drum pressure is shaped: make end socket temperature maintenance carry out drum pressure operation under the state of 100 ~ 500 DEG C, repeatedly enter stove heating, repeatedly drum pressure, from the edge of disk, by die head and disk alignment, the disk that rotarily drives constantly by controlling swiveling wheel rotates, and suppresses in a certain order;
(8), mould pressing: for the formation of angle, end socket garden and straight flange, end socket temperature maintenance is made to carry out spinning operation under the state of 100 ~ 500 DEG C, with 3 ~ 6 volley of rifle fire flame projectors, heating and thermal insulation is at equal intervals carried out to end socket, guarantee titanium sheet material temperature all the time in 100 ~ 500 DEG C of safe rangies;
(9), bevel cut: select plasma cut form to carry out retaining wall on slope, before bevel cut, end socket is calibrated by shape face, then determine cutting-height, bevel cut front head inwall smears limewash, after bevel cut, polishing light is carried out to groove, remove all cutting residues;
(10), pickling processes: formed head is carried out pickling, concentration of hydrochloric acid: 7 ~ 19%, pickling time: 15 ~ 30 minutes, re-use a large amount of clear water and rinse, form one deck passivating film on surface;
(11), polish: the scuffing on end socket and other defect, carry out grinding process;
(12), penetrant inspection detects: to end socket defects detection, be up to the standards product putting in storage;
(13), end socket is stacking: corrugated paper must be used to carry out dottle pin between each end socket between titanium sheet material end socket, prevents jolting and cause the secondary of end socket to scratch in transit.
CN201410042783.XA 2014-01-21 2014-01-21 Manufacturing method for titanium plate plugs CN104786006A (en)

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CN106670364A (en) * 2016-12-27 2017-05-17 上海电气上重铸锻有限公司 Variable-section thin-wall stainless steel hemisphere seal forming method
CN109834434A (en) * 2017-11-29 2019-06-04 宜兴市联丰化工机械有限公司 A kind of rotary pressed head technique

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