CN107619942B - A kind of consumable electrode vacuum furnace titanium or titanium alloy electrode and preparation method thereof - Google Patents
A kind of consumable electrode vacuum furnace titanium or titanium alloy electrode and preparation method thereof Download PDFInfo
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- CN107619942B CN107619942B CN201711017448.4A CN201711017448A CN107619942B CN 107619942 B CN107619942 B CN 107619942B CN 201711017448 A CN201711017448 A CN 201711017448A CN 107619942 B CN107619942 B CN 107619942B
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Abstract
The invention discloses a kind of consumable electrode vacuum furnace titanium or titanium alloy electrodes, including several electrode block groups, single electrode block group is composed of the electrode block of two kinds of different structures, one of electrode block is installed between the electrode block of another structure, and two kinds of structure electrode block joints surface is provided with location structure.The invention also discloses the preparation methods of above-mentioned electrode.Rational design of the present invention by mold, the reasonable combination of electrode block, the overlap joint between electrode block, make full use of the welding characteristic of plasma arc, the electrode block of combination pairing is welded, big specification consutrode is made, is solved in the case where hydraulic press compacting is small, the problem of big specification consutrode can not be produced, the present invention improves the versatility of equipment, has widened the use scope of equipment, has improved production efficiency, die cost is reduced, production cost has been saved.
Description
Technical field
The invention belongs to titanium ingot casting melting technique fields, and in particular to a kind of consumable electrode vacuum furnace titanium or titanium alloy electrode,
The invention further relates to the preparation methods of above-mentioned electrode.
Background technique
Titanium and the capital equipment of titan alloy casting ingot production are vacuum consumable electrode arc furnaces, and the preparation of consutrode is vacuum consumable
Electric arc furnaces produces essential process flow.The raw material for producing titanium and titanium alloy consumable electrode is mainly titanium sponge, titanium sponge
It is a kind of similar spongiform metallic particles, there is good plasticity.It is titanium ingot casting production primary raw materials, purity 99.1~
99.7%, impurity content 0.3~0.9%, 0.83~25.4mm of granularity, hardness HB100-157,1.1~1.5 gram/cube of density
Centimetre.According to the difference of the chemical component of melted ingot casting, in the titanium sponge particles and graininess of loose shape or the metal of bits shape
Between alloy with certain proportion, by being sufficiently stirred and mix in blender, be packed into the mold of hydraulic press, squeezed using side
The semi-continuous working mode of side filling is pressed into the consutrode with certain diameter or Diagonal Dimension, length.
To guarantee to be tightly combined between particle, chip off-falling, the density of consutrode is not generally big in fusion process for consutrode
In 3.2 grams/cc, to guarantee refining quality, the diameter or maximum diagonal size of consutrode must with melted
Crucible specification matches.For the performance requirement for reaching consutrode, under the conditions of the prior art, if to suppress the consumable of big specification
Electrode can only be suppressed using large-tonnage hydraulic press, and Miniature oil press cannot achieve the production requirement of one whole electrode of compacting.
Summary of the invention
The object of the present invention is to provide a kind of consumable electrode vacuum furnace titanium and titanium alloy electrodes, solve existing electrode and prepare
Cheng Zhong, because hydraulic press press power is small, the problem of big specification consutrode can not be produced.
It is a further object of the present invention to provide the preparation methods of above-mentioned electrode.
The technical scheme adopted by the invention is that a kind of consumable electrode vacuum furnace titanium or titanium alloy electrode, including several electrodes
Block group, single electrode block group are composed of the electrode block of two kinds of different structures, and one of electrode block is installed in another electricity
Between the block of pole, two kinds of structure electrode block joints surface is provided with location structure.
The features of the present invention also characterized in that
Location structure are as follows: the plane that the electrode block of two kinds of structures is in contact is provided with difference in height, and two pieces of electrode blocks utilize
The difference in height of mutual plane is clamped positioning；Or it clamps one surface of electrode block and is provided with trapezoidal groove, electrode block to be clamped and folder
The loading electrode block surface that is in contact is provided with adaptable protrusion.
It is provided with angle plane between plane on each electrode block with difference in height, angle plane is located at electrode block
It is on center line and symmetrical with electrode block center line.
The angle of angle plane is 30~60 degree.
The difference in height of plane is 5~10mm.
Single electrode group is made of two pieces of electrode blocks, and electrode block B is installed between two pieces of electrode block A, and electrode block A is far from electricity
Two seamed edges of pole block B do fillet processing.
Single electrode group is made of six pieces of electrode blocks, including four pieces of electrode block C and two pieces of electrode block D, and two pieces electrode block D points
It is not installed between two pieces of electrode block C, two pieces of electrode block D are adjacent, and the seamed edge positioned at the electrode block C of quadrangle does fillet processing.
Another technical solution of the present invention is, the preparation side of a kind of consumable electrode vacuum furnace titanium or titanium alloy electrode
Method is specifically implemented according to the following steps:
Step 1, according to the structural requirement of two kinds of electrode blocks, two kinds of electrode blocks of quantity Matching are suppressed respectively；
Step 2, it combines electrode block in material frame, and material is placed in vacuum plasma welding box, material frame is in weldering case
It axially moves in a circle along its longitudinal direction；Weldering case furnace chamber vacuumize, be filled with protective gas, using plasma arc welded to get
To crucible pure titanium or titanium alloy consumable electrode.
The features of the present invention also characterized in that
Material frame includes upper beam and underbeam, and upper beam and underbeam include two rectangle fashioned iron, two rectangle fashioned iron both ends difference
It is connected by fixing piece, dowel hole is provided on the fixing piece of upper beam, alignment pin, upper beam are provided on the fixing piece of underbeam
It connected, fastened by bolt, nut with underbeam, be combined into an entirety, rectangle fashioned iron is located at the diagonal of electrode block.
The contact site of electrode block and rectangle fashioned iron is arc surface, and a planar shaped of circular arc position and rectangle fashioned iron is in line
Contact.
The invention has the advantages that the present invention is suppressed on Miniature oil press by designing reasonable electrode die
The electrode block of pairing can be combined between each other；Design the material frame for capableing of clamping electrode block, the electrode block that matched group is got togather
Clamping welds in vacuum plasma welding box in material frame, consutrode is made.Relative to weldless consutrode, due to
Single electrode block weight is small, it is easier to mix titanium sponge and intermediate alloy more uniform, be conducive to the uniform of ingot casting ingredient
Change, produces the titan alloy casting ingot of high quality.
Detailed description of the invention
Fig. 1 is the schematic cross-section for the electrode that electrode block A, B are assembled into；
Fig. 2 is the schematic cross-section of electrode block A；
Fig. 3 is the schematic cross-section of electrode block B；
The schematic cross-section for the electrode that Fig. 4 electrode block C, D are assembled into；
Fig. 5 is the schematic cross-section of electrode block C；
Fig. 6 is the schematic cross-section of electrode block D；
Fig. 7 is the punch-pin schematic cross-section of electrode pressing block A；
Fig. 8 is the punch-pin schematic cross-section of electrode pressing block B；
Fig. 9 is the shared bed die schematic cross-section of electrode block A, B；
Figure 10 is clamping schematic cross-section of electrode block A, B group loading electrode on material frame；
Figure 11 is clamping schematic cross-section of electrode block C, D group loading electrode on material frame；
Figure 12 is the assembling schematic diagram of compound electrode block and material frame.
In figure, 1. electrode block A, 2. electrode block B, 3. electrode block C, 4. electrode block D, the punch-pin of 5. electrode pressing block A, 6. are pressed
The punch-pin of electrode block B processed, 7. electrode block A, B shared bed die, 8. upper beams, 9. underbeams, 10. weld seams.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of consumable electrode vacuum furnace titanium of the present invention or titanium alloy electrode, are made of two kinds of electrode blocks of different shapes.
A kind of form of consumable electrode vacuum furnace titanium or titanium alloy electrode of the present invention, cross section is as shown in Figure 1, single group electrode
Block is formed by three pieces of electrode assemblings, including the electrode for being located at the electrode block A1 of upper and lower ends and being installed between two pieces of electrode block A1
Block B2.
As shown in Fig. 2, electrode block A1 shape similar to cuboid, is plane around electrode block, on electrode block A1
Two seamed edges that surface is intersected with left and right sides do rounding processing, form arc surface, and with axisymmetrical, the fillet of arc surface
Radius R is 50~80mm.Bottom is the stairstepping plane of 5~10mm of difference in height, and the mid-plane of stairstepping plane and two sides are flat
Angle between face is 30~60 degree.The center line of electrode block and the center line of mid-plane coincide.
As shown in figure 3, electrode block B2 shape is similar to cuboid, the shape of upper and lower two planes and the stairstepping of electrode block A
Plane is adapted.
When assembling, electrode block B2 is placed between two electrode block A1, two electrode A block placement angles differ 180 degree, electricity
Pole block A and electrode block B is mutually clasped by stairstepping plane, i.e. assembling forms one group of electrode block.
Another form of consumable electrode vacuum furnace titanium or titanium alloy electrode of the present invention, cross section is as shown in figure 4, single group is electric
Pole block is formed by six pieces of electrode assemblings, including being located at four pieces of electrode block C3 of upper and lower ends and being respectively installed in two pieces of electrode block C3
Between two pieces of electrode block D4.
As shown in figure 5, rounding processing is done with the seamed edge that wherein side side is intersected in the upper surface electrode block C3, circular arc is formed
Face, lower surface are provided with trapezoidal groove.
As shown in fig. 6, electrode block D4 upper and lower surface is provided with the protrusion being adapted with the lower surface electrode block C3.
When assembling, the fillet of four pieces of electrode block C3 is located at the upper left corner, the upper right corner, the lower left corner, the lower right corner, two pieces of electrodes
Block D4 is installed in respectively between two pieces of electrode block C3, i.e. assembling forms one group of electrode block.
The preparation method of a kind of consumable electrode vacuum furnace titanium of the present invention or titanium alloy electrode, is specifically implemented according to the following steps:
Step 1, electrode pressing block
It, will punch-pin corresponding with electrode block A (or electrode block C) surface shape, bottom according to the specification for the electrode to be produced
Mould puts uniformly mixed titanium sponge and intermediate alloy, suppresses the electrode block A of quantitative requirement on press machine in die cavity
(or electrode block C).After the specification electrode block is suppressed, punch-pin is replaced, it will be with the upper surface electrode block B (or electrode block D) shape
Adaptable punch-pin presses process requirements on the press machine, and charging is suppressed, and obtains electrode block B (or the electrode of quantitative requirement
Block D).
Fig. 7 is the punch-pin sectional view of electrode pressing block A, and Fig. 8 is the punch-pin sectional view of electrode pressing block B, and Fig. 9 is electrode block
A, B shared bed die sectional view.
Step 2, loading electrode is organized
Electrode block A, electrode block B are successively assembled on underbeam, electrode block B is placed between two electrode block A, two electrodes
A block placement angle differs 180 degree, and electrode block A and electrode block B is mutually clasped by stairstepping plane, completes single group electrode
The assembling of block.Longitudinal arrangement multiple groups, close upper beam, and section is as shown in Figure 10.
Electrode block C, electrode block D are successively assembled on underbeam by the second way, and electrode block C and electrode block D pass through contact
Convex-concave slot between face mutually constrains, and laterally will not generate sliding between each other, after single group electrode block has assembled, longitudinal arrangement is
Multiple groups, close upper beam, and the arc sections of four pieces of electrode block C are fixed by the upper underbeam of material frame respectively.Section is as shown in figure 11.
Upper beam is in close contact under the guiding role of alignment pin with electrode block, underbeam, and bolt, nut are assembled to
In through-hole on the outside of underbeam, fastening bolt, nut are integral two beam conjunctions up and down, i.e. completion electrode assembling and clamping, dress
The material frame for preparing compound electrode block is as shown in figure 12.
Step 3, welding electrode block
By the material for clamping electrode block it is rack-mounted enter plasma welding chamber in, material frame in weldering case by movement mechanism, can be in level
It moves in a circle in face along its longitudinal axis, transverse movement perpendicularly to the longitudinal axis can also be done in the horizontal plane.Adjacent electrode
It is welding region at the gap of contact surface between block.When welding case work, operating room's door is closed, operating room first passes through vacuum pump
Group makes operating room be in vacuum state, after chamber pressure, leak rate are qualified, is filled with the argon gas of certain pressure, starts plasma arc
Rifle is welded, and " ten " font welding is used between adjacent electrode block, the plasma arc of high temperature will be adjacent in vacuum welding equipment
Electrode block between titanium sponge and alloy melting, melting range solidification after, one piece one piece of electrode block is linked together.It is adjacent
After the completion of being welded between electrode block, it is also necessary to cooling certain time.After reaching the stipulated time, operating room's door is opened, is welded in case
Walking mechanism will expect that frame is transported to outside operating room, and the connection bolt in dismounting between underbeam hangs upper beam, will be linked to be an entirety
Electrode hung from underbeam, consutrode preparation process complete.
Material frame is made of upper beam 8 and underbeam 9.
Upper beam 8 is one by two rectangle fashioned iron placed side by side (inlaying reinforcing rib in fashioned iron cavity), and head and tail portion
And the frame structure welded of fixing piece, the angle and electrode block placement angle between two rectangle fashioned iron center lines are corresponding.
The cylinder pin hole with underbeam mounted in pairing mode is provided on two fixing pieces.Each setting two is for installing on the outside of two rectangle fashioned iron
The through-hole of bolt.
Underbeam 9 is by two drive flanges, six reinforcing ribs, two load-bearing flanges, two fixing pieces, two rectangle fashioned iron
Frame structure made of (inlaying reinforcing rib in fashioned iron cavity) group weldering.Two rectangle fashioned iron of underbeam are placed side by side, in two fashioned iron
Angle and electrode block placement angle between heart line is corresponding.Fixing piece, load-bearing flange, reinforcing rib, drive flange are sequentially placed
On the head and tail portion of rectangle fashioned iron.The load-bearing flange side upper end of fixing piece welding is provided with setting circle pin, two squares
Each setting two is for installing the through-hole of bolt on the outside of shape fashioned iron.
When charging, electrode block is placed on underbeam, and underbeam and load-bearing flange bear electrode block weight, after electrode has assembled,
After closing upper beam, the setting circle pin of cylinder pin hole and underbeam fixed block on upper beam fixed block is matched.Upper beam rectangle fashioned iron
Inside and the inside of underbeam rectangle fashioned iron respectively have a plane and the circular arc on the outside of electrode block tangent, upper beam and underbeam pass through square
Four bolts, the nuts installed in the outer side through hole of shape fashioned iron, are connected as an entirety for upper underbeam.
In welding process, the drive flange at material frame both ends is placed in the driven roller in weldering case, with driving mechanism, drives material
Frame moves in a circle along the center line of two drive flanges of underbeam.
The present invention can obtain Φ 720mm earthenware by electrode block structure setting, combination overlap joint, plasma arc welding (PAW) connection technology
Crucible pure titanium and titanium alloy consumable electrode.The electrode of compacting is block-shaped when changing, and does not have to replacement cavity plate, do not have to by mould bases from
It is disassembled on press bed, punch-pin is replaced directly on compressor operation platform.In addition, being realized using the present invention program
The technological innovation that big specification consutrode is prepared using subpress, improves the versatility of equipment, has widened the use of equipment
Range reduces die cost, has saved production cost.After the use of new construction mold, the assembling production capacity of electrode is by original every
Class can produce 7.5 tons, be increased to 11.2 tons.Activity duration by original 24 hours, becomes 16 hours.
Embodiment 1
Required according to consutrode outer circle or maximum diagonal size and crucible matching, Φ 720mm crucible from power consumption
Extremely required consutrode outside diameter or Diagonal Dimension are between 600mm to 630mm.It is specifically implemented according to the following steps:
Step 1, in press working area electrode pressing block A, electrode block B, electrode block A having a size of 400 × 400 × 200mm,
Electrode block B is 93Kg having a size of 400 × 400 × 190mm, the weight of two kinds of electrode blocks.It, will be with electrode block A by production requirement
The corresponding punch-pin 5 of upper surface shape, bed die 7 put uniformly mixed titanium sponge and intermediate alloy on press machine in die cavity,
Successively suppress 22 pieces of electrode block A.After the specification electrode block is suppressed, punch-pin is replaced, will mutually be fitted with the upper surface electrode block B shape
The punch-pin 6 answered is on press machine, and by process requirements, 11 pieces of electrode block B are successively suppressed in charging, compacting.
Step 2, region is assembled in electrode block, assembles electrode block A, electrode block B.Electrode block A, electrode block B are successively assembled
On underbeam, electrode block B is placed between two electrode block A, and two electrode A block placement angles differ 180 degree, electrode block A and electricity
Pole block B is mutually clasped by stairstepping plane, 11 groups of longitudinal arrangement, is closed upper beam, is fastened the bolt on the outside of two beams
And nut, it is integral two beam conjunctions up and down.
Step 3, by the material for clamping electrode block it is rack-mounted enter plasma welding chamber in, material frame in weldering case by movement mechanism, can
It moves in a circle along its longitudinal axis, transverse movement perpendicularly to the longitudinal axis can also done.Contact between adjacent electrode block
It is welding region at the gap in face.When welding case work, operating room's door is closed, operating room first passes through vacuum pump group, makes at operating room
In vacuum state, after chamber pressure, leak rate are qualified, it is filled with the argon gas of certain pressure, starting plasma arc rifle is welded, phase
Use " ten " font welding between adjacent electrode block, the plasma arc of high temperature is will be between adjacent electrode block in vacuum welding equipment
One piece one piece of electrode block is linked together by titanium sponge and alloy melting after the solidification of melting range.It is welded between adjacent electrode block
After the completion, it is also necessary to cooling certain time.After reaching the stipulated time, operating room's door is opened, the walking mechanism welded in case will expect frame
It is transported to outside operating room, the connection bolt in dismounting between underbeam hangs upper beam, will be linked to be the electrode of an entirety from underbeam
It hangs to get to Φ 720mm crucible consutrode.
Embodiment 2
According to consutrode outside diameter or maximum diagonal size and crucible matching require, Φ 640mm crucible from
Consutrode outside diameter or maximum diagonal size needed for power pole are between 550mm to 560mm.Specifically according to the following steps
Implement:
Step 1: successively suppressing 44 pieces of electrode block C in press working area, 22 pieces of electrode block D, electrode block C is having a size of 200
× 200 × 170mm, electrode block D are 3.2 grams/cc having a size of 200 × 200 × 170mm, the averag density of electrode block.
Step 2: assembling region in electrode block, assemble electrode block C, electrode block D.Electrode block C, electrode block D are successively assembled
On underbeam, C and D are mutually constrained by the convex-concave slot between contact surface, will not laterally generate sliding, four electrodes between each other
The arc sections of block C are fixed by the working face of the upper underbeam of material frame respectively.After electrode block has assembled, upper beam is closed, fastens two
Screw bolt and nut on the outside of beam is integral two beams conjunction up and down, six electrode blocks become in material frame an entirety without
It can separate.
Step 3, in welding region, clamping material frame is enclosed in vacuum plasma welding box, closes operating room's door, first
By vacuum pump group, so that operating room is in vacuum state and be filled with the argon gas of certain pressure after chamber pressure, leak rate are qualified, open
Dynamic plasma arc rifle is welded, and " ten " font welding is used between adjacent electrode block, after the solidification of melting range, by one piece one
The electrode block of block is linked together, and after reaching the stipulated time, opens operating room's door, and welding the walking mechanism in case will expect that frame is transported to work
Make outdoor connection bolt in dismounting between underbeam, hang upper beam, the electrode for being linked to be an entirety is hung from underbeam, makes
For at Φ 640mm crucible consutrode.
Claims (8)
1. a kind of consumable electrode vacuum furnace titanium or titanium alloy electrode, which is characterized in that including several electrode block groups, single electrode block group
It is composed of the electrode block of two kinds of different structures, one of electrode block is installed between another electrode block, two kinds of structures
Electrode block joint surface is provided with location structure；
The location structure are as follows: the plane that the electrode block of two kinds of structures is in contact is provided with difference in height, and two pieces of electrode blocks utilize
The difference in height of mutual plane is clamped positioning；Or it clamps one surface of electrode block and is provided with trapezoidal groove, electrode block to be clamped and folder
The loading electrode block surface that is in contact is provided with adaptable protrusion.
2. a kind of consumable electrode vacuum furnace titanium according to claim 1 or titanium alloy electrode, which is characterized in that it is described each
It is provided with angle plane between plane on electrode block with difference in height, angle plane is located on electrode block center line and with electricity
Pole block center line is symmetrical.
3. a kind of consumable electrode vacuum furnace titanium according to claim 2 or titanium alloy electrode, which is characterized in that the angle is flat
The angle in face is 30~60 degree.
4. a kind of consumable electrode vacuum furnace titanium according to claim 1 or titanium alloy electrode, which is characterized in that the plane
Difference in height is 5~10mm.
5. a kind of consumable electrode vacuum furnace titanium according to claim 1 or titanium alloy electrode, which is characterized in that the single electricity
Pole group is made of two pieces of electrode blocks, and electrode block B (2) is installed between two pieces of electrode block A (1), and electrode block A (1) is far from electrode block B
(2) two seamed edges do fillet processing.
6. a kind of consumable electrode vacuum furnace titanium according to claim 1 or titanium alloy electrode, which is characterized in that the single electricity
Pole group is made of six pieces of electrode blocks, including four pieces of electrode block C (3) and two pieces of electrode block D (4), two pieces of electrode block D (4) are pressed from both sides respectively
Between two pieces of electrode block C (3), two pieces of electrode block D (4) are adjacent, and the seamed edge positioned at the electrode block C (3) of quadrangle is done at fillet
Reason.
7. the method for preparing consumable electrode vacuum furnace titanium or titanium alloy electrode described in any one of claims 1-6, which is characterized in that
It is specifically implemented according to the following steps:
Step 1, according to the structural requirement of two kinds of electrode blocks, two kinds of electrode blocks of quantity Matching are suppressed respectively；
Step 2, it combines electrode block in material frame, and material is placed in vacuum plasma welding box, material frame is in weldering case along it
It is longitudinal axially to move in a circle；Weldering case furnace chamber vacuumizes, and is filled with protective gas, is welded using plasma arc to get earthenware is arrived
Crucible pure titanium or titanium alloy consumable electrode；
The material frame includes upper beam (8) and underbeam (9), and upper beam (8) and underbeam (9) include two rectangle fashioned iron, two rectangles
Fashioned iron both ends are connected by fixing piece respectively, are provided with dowel hole on the fixing piece of upper beam (8), on the fixing piece of underbeam (9)
It is provided with alignment pin, upper beam (8) is connected by bolt, nut with underbeam (9), fastened, and an entirety, rectangle fashioned iron point are combined into
Not Wei Yu electrode block diagonal.
8. the method according to claim 7 for preparing consumable electrode vacuum furnace titanium or titanium alloy electrode, which is characterized in that described
The contact site of electrode block and rectangle fashioned iron is arc surface, and circular arc position is contacted with a planar shaped of rectangle fashioned iron in line.
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| CN109483030B (en) * | 2018-12-07 | 2020-12-29 | 攀钢集团成都钛材有限公司江油分公司 | Preparation method of TC4 titanium alloy consumable electrode rod |
| CN109355511B (en) * | 2018-12-27 | 2020-05-26 | 有研工程技术研究院有限公司 | Electrode material for TiNiFe alloy vacuum consumable melting and preparation thereof |
| CN113249588A (en) * | 2021-03-22 | 2021-08-13 | 洛阳双瑞精铸钛业有限公司 | Z-shaped pressing block for titanium and titanium alloy EB smelting and pressing die thereof |
| CN113237330B (en) * | 2021-03-22 | 2022-12-02 | 洛阳双瑞精铸钛业有限公司 | Method for improving uniformity of Al element components of titanium alloy EB ingot |
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| CN102367523A (en) * | 2011-10-08 | 2012-03-07 | 中南大学 | Method for melting titanium alloy containing high-melting point alloy element |
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| CN203761612U (en) * | 2014-04-07 | 2014-08-06 | 西安中泰新材料科技有限公司 | Titanium electrode combination comprising refractory metal core rod |
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| CN102367523A (en) * | 2011-10-08 | 2012-03-07 | 中南大学 | Method for melting titanium alloy containing high-melting point alloy element |
| CN202954077U (en) * | 2012-10-24 | 2013-05-29 | 攀枝花云钛实业有限公司 | Briquetting device of titanium and titanium alloy briquetting materials |
| CN103922769A (en) * | 2014-03-31 | 2014-07-16 | 上海大学 | Molten titanium and titanium alloy crucible and preparation method thereof |
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