JPS58132314A - Method and apparatus for drawing molybdenum and alloy thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to metal working, and relates to a method and apparatus for drawing wire of special K, molybdenum and its alloys.

The method of the invention can be readily applied to draw wires used in electrical engineering with diameters from Jswa to OJ■ from refractory metals such as tungsten, molybdenum, titanium, and niobium.

The method currently used for drawing wire from refractory metals is carried out using carbon-containing lubricants at high temperatures with the aid of hard metal dies.

Known method for drawing wire from molybdenum and its alloys (K
, mugte and 1. Book 1 Tungsten and Molybdenum 0 by Vatsken, Moscow and Yohileningrad, IT Cup Year, 9/-? (see page j) is K as follows.

A lubricant is added to the surface of the wire, which is then heated and drawn. The lubricant used during the drawing process.

It is an aqueous solution of finely divided graphite.

The extraction of the bell is done in several passes. As the wire thickness decreases, the drawing temperature decreases. For a line with a diameter of J, the temperature of the drawing die is oo'c, and for a line with a diameter of 0,/wx, its temperature is 300℃.

When the wire is drawn at high temperature, it produces a fairly high external friction, so to overcome the external friction it is necessary to
0% is required. In addition to the considerable power input required to heat the KJ prior to drawing, high speed drawing cannot be ensured which adversely affects the production capacity of the drawing machine. The use of finely divided graphite as a lubricant embrittles the metal and degrades the properties of the wire surface, making it necessary to remove the graphite from the wire surface by etching. Therefore, etching results in loss of molybdenum. Complete cleaning of the graphite lubricant reduces the wire by 1-J% in diameter. The high temperatures of the drawing process and the graphite-contaminated workplace air explain the unsatisfactory working conditions for the workers.

It is also known to draw wires of steel and non-ferrous metals under conditions of fluid friction (e.g. V, L.

Book 1 Drawing in Conditions of Fluid Friction 1 by IO1mOgOrO'v, Metallurgy Publishers, Moscow, 1947, Co.?
- see page 34). In this method, an auxiliary layer of lubricant, typically 90"C.

Add an aqueous solution of 13um salt and rhusium carbonate to the surface of the wire, and then
Dry and pull out at a temperature of -110°C. During the drying process, water evaporates and an auxiliary layer of lubricant is formed on the wire. Sodium soap powder is used as a drawing medium temperature lubricant.

It is desirable to use assembly dies when drawing steel wire under conditions of fluid friction. The assembly die has a pressure die and a processing die arranged for a conical bush. The pressure die is made of refractory material and its inner diameter is larger than the original wire diameter. This allows the lubricant to pass between the pressure die and the processing die under pressure.

However, this method cannot reliably pull out the refractory metal wire. The reason for this is that refractory metals such as molybdenum, tungsten, and niobium have high brittleness and cannot be subjected to cold drawing Km<. The use of lime as a lubricant, which has a weak chemical affinity with soap powder, increases the rate of rupture during cold drawing of wire from refractory metal. Additionally, the conical pushpiece used to assemble the die is expensive to manufacture and considerably complicates centering of the die elements.

The object of the present invention is to provide a method for drawing wires of 711 puden and its alloys, which allows the drawing of fragile refractory wires under conditions of fluid friction without rupture.

Another object of the invention is to increase the drawing speed of molybdenum and some alloy wire.

Yet another object of the present invention is the line! ! This eliminates the post-drawing etching operation used to remove the graphite lubricant from the surface and, as a result, the electropolishing operation of the wire surface.

Another object of the invention is to provide an apparatus for drawing wire of molybdenum and its alloys.

Thus, the present invention provides the following method for drawing wire from mo1) buden and its alloys. It's sodium soap! The aqueous solution is added to the pre-oxidized surface of the wire of Mo1 and its alloys, and the wire is dried, resulting in the formation of an auxiliary layer of sodium soap lubricant on the surface of the wire, in the form of sodium soap. A layer of lubricant is applied to the wire surface, the wire is pulled out in such a way as to generate pressure in front of the layer of lubricant and in the deformation area itself, with the lubricant being supplied to these areas nine gravity, and then The lubricant layer and the auxiliary layer are removed from the wire surface.

Prior to applying the auxiliary layer of lubricant to the wire surface, it is desirable to hot draw the wire for the purpose of leveling the surface of the wire.

When drawing a wire with a diameter of Ojm or less, it is desirable to use a lubricant containing molybdenum disulfide, chalk powder, and hypoid oil in addition to sodium soap powder. It is.

Weight percent sodium soap ・・・・・・・・・・・・・・・
Coj~tei! MO8,・・・・・・・・・・・・・・・
Ko～2tOaOO,・・・・・・・・・1・・・・・・
5-10 Hypoid oil・・・・・・・・・・・・
... Remainder The present invention also provides an apparatus for drawing wire of molybdenum and its alloys. The device comprises at least one split housing in the form of two cups interconnected by a screw, the cups of the split housing having a bottom opening formed therein to allow the passage of a wire, and The device is equipped with a pressure die and a processing die mounted coaxially with the housing sink and with a gap of 9 to the housing, the device also having an auxiliary layer of lubricant arranged in the order of an engineering process. There is a device for applying the lubricant to the wire surface, separate equipment for supplying lubricant to the housing or each housing with the die, and a unit for removing the lubricant layer and the auxiliary layer from the wire surface.

The equipment for adding an auxiliary layer of lubricant to the wire surface incorporates a medium run for baking and oxidizing the wire surface, a tank for holding an aqueous solution of sodium soap, a drying chamber, a baking kiln, and a tubular heat exchanger. It is expedient to communicate with the drying chamber via an exchanger.

Ennit for supplying lubricant to the die.

Preferably, a casing is provided with a sloped bottom with holes for draining off contaminated excess lubricant, said casing having a pipe for fresh supply of lubricant and a casing for directing lubricant to the die casing. Contains a belt conveyor for delivery, and connects one end of the persi conveyor to the bin ``1''
K and the other end is placed over the hole that drains the contaminated excess lubricant.

It is expedient to design the belt conveyor for delivering the lubricant to the drawing die in the form of a trough.

1) According to the method of the present invention for drawing wires of puden and its alloys, fragile refractory wires can be drawn under conditions of fluid friction without bursting. The state of fluid friction is
This is ensured by the high pressure created by the processing die due to the lubricant. If the withdrawal is carried out under conditions of fluid friction,
Heating the fragile wire is unnecessary, which increases fuel and power consumption. The use of easily removable lubricants eliminates sequential operations such as etching the wire surface to remove the gelafite lubricant and electropolishing the wire surface. Drawing lines under conditions of fluid friction produces lines with improved surface properties;
It will be possible to reduce the consumption of precious metals such as gold, silver and platinum used for seeds. It should be noted that drawing 0.3-diameter wire from refractory brittle metals was previously done with a diamond die, but this was a fairly expensive tool. Using sodium soap as an auxiliary layer lubricant, which has good adhesion to sodium soap powder, allows the wire to be drawn under fluid friction conditions, eliminating the need for expensive diamond dies. Now you can.

Equipment for derusting molybdenum and its alloys is compact and can considerably reduce the consumption of fuel and power required to heat and dry the wire. Mo1) Cold drawing the buden wire under fluid friction prevents pollution of the environment and improves working conditions for workers.

Examples of the present invention will be described below with reference to the resistance layer.

The method of drawing wire from molybdenum and its alloys includes the following operations.

When drawing a molybdenum wire with a diameter of JJ - J sa, the wire is first graded in a hydrogen kiln at a temperature of 1000°C.

This operation is carried out to relieve the internal stress of the wire and to form an oxide film on the wire surface, thereby
The soap sticks strongly to the surface.

Then a coil of wire with a temperature of 1 ooo °C.

Nato with a temperature of 11 degrees from 0 to 90℃ 1) of rum soap!
Immerse in a tank containing I96 solution.

Then, draw the line 0-7! Dry in a drying room at a temperature of θ°C. As the water evaporates, an auxiliary layer of 1) rum soap forms on the wire surface.

Also, add sodium-11um soap powder to the wire as a layer of lubricant. For this purpose, the line is fed through a canyon containing soap powder. Due to the good adhesion, the particles of soap powder stick to the wire surface and are entrained into the chamber formed by the pressure die and processing die.

The drawing of the molybdenum wire is carried out in such a way that a pressure can be created by self-feeding of the lubricant in front of the layer of lubricant and in the deformation area. The magnitude of the pressure is! ,000-
t, 0001xd/Cd K is reached and under this pressure the soap powder becomes liquid. A layer of liquid soap surrounds the wire drawn with the die, so that drawing performed under boundary friction conditions is converted to drawing performed under fluid friction conditions.Finally, the wire is The lubricant layer and the auxiliary layer are removed from the wire surface by washing in a hot water bath at a temperature of 90'C.

When raw molybdenum wire is hot rotary forged, it tends to have an uneven surface. Before adding the auxiliary layer lubricant, the surface is smoothed by high-temperature drawing of the wire to remove surface roughness. Such drawing is carried out using a well-known method using an aqueous solution of finely divided graphite.

When drawing a wire with a diameter of θ, jag+ or less, in addition to sodium soap, add 11 moles of molybdenum disulfide, 0 a of chalk
OO Hatake uses a lubricant containing hypoid oil, and the pre-distribution ingredients are included in the following amounts:

Weight percentage 1) Rum stone ・・・・・・・・・・・・・・・
ko l～4IjMO8,・・・・・・・・・・・・・・・
・ Ko~ tOaOO,・・・・・・・・・・・・1・
・ l~10 hypoid oil ・・・・・・・・・
The present invention provides an apparatus for carrying out a method for drawing wire of molybdenum and its alloys. The device comprises at least one split housing/(Fig. 1) in the form of two cylindrical cups and 3, the bottoms of these cylindrical cups and 3 having a wire through which they can be passed. There are opening troughs 5 and these cups are interconnected by screws 4. Coaxially with this K and mounted on the housing with a gap therebetween is a pressure gauge and a processing die T.

two sealing gaskets t and 10 are attached to the wall of the housing I;
It is arranged between the pressure die 7 and the end face of the processing die l, and is provided to prevent lubricant from leaking from the housing l.

To facilitate the assembly operation, a washer//with a radial duct 12 through which lubricant passes is arranged in the gap between the pressure gauge and the processing die t. Model 13
, is a throw to give away the assembly of Guisuf and T.

The device also includes a device for adding an auxiliary layer of lubricant onto the wire, which device is arranged in the order of an industrial process and for baking and oxidizing the surface of the wire 13. The combustion kiln/44 comprises a kiln 14I (FIG. 1), a tank 16 for containing an aqueous solution of +3um soap, and a drying chamber 17 for removing moisture from the wire surfaces.
Drying chamber/7 via tubular heat exchanger/l and line 19
Let's communicate with each other.

@/j is taken out and fed from frame m to kiln/4'. The take-off frame n is used to wrap ILIIiA around when the line leaves the drying chamber 17, while the Kasumi-Rako/ is provided for pulling Jli/j out of the tank.

Furthermore, this device incorporates, for each housing 7, a unit for feeding lubricant to the die, which unit consists of a casing with a sloped top and a sloped bottom. , there is a hole for draining contaminated excess lubricant. 8. Casing Co., Ltd.
It has a bin for a fresh supply of lubricant and a conveyor 1 for delivering the lubricant to the die spheres and the housing 1 of the t. One end of the belt conveyor tip is placed below the bottle rack, and the other end is placed above the hole j. The bottle 1 is provided with a cover u in which a lubricant dosing device M is integrated. A peltone carrier core is connected to an electric drive X.

According to another embodiment of the invention, when the bell moves over a roller J/ fixed to the shaft of an electric drive device X transmitting rotational motion, the belt and the conveyor belt sweep the buds lj.
Moved by K. The a-ra J/ is connected to the belt puncher J7 via a flexible transmission member J2.

The casing force also houses the housing I of the die and t. A receiving hopper 33 is attached below the hole.

A belt conveyor shaft (see figure) is constructed in the form of a trough and is met by uniformly applying lubricant over the entire surface of the l1s. As the bell 15 moves along the trough, the line is completely immersed in soap powder that adheres to its entire surface.

The device also has a unit C (not shown) for preparing the lubricant layer and the auxiliary layer, which is in the form of a bath I! filled with boiling water for washing the wires. lK is made.

The apparatus of the invention for drawing wire of molybdenum and its alloys operates as follows.

1) Puden wire t to be pulled out under the condition of fluid friction
The coil S (Fig. 1) is attached to the take-out frame with the axis Kjl
It is then rolled back and then pulled through a gas-fired kiln. In Nakarun 14I, line /
The firing of S combines with its heating to obtain an oxidized surface. Further move along guide 4-ra and VK until you reach line 1S)
Pass through a tank containing a j* aqueous solution of 13um soap.

Upon entering the drying chamber lf, wire /j is dried by hot air supplied from heat exchanger /l. Although the moisture is removed, an auxiliary layer of lubricant remains on the surface of the line tS.

Burnt molybdenum f with an auxiliary layer of lubricant on the surface
Roll up the lits again with the help of the extraction frame n.

Additionally, a layer of lubricant is added as follows.

The pure powder is fed from the bin U onto the belt conveyor 27 through the dosing device 9. When moving with the belt conveyor core, it is in a layer of lubricant.

Due to the good adhesion, the lubricant, ie sodium soap powder, sticks to the surface of the wire and is entrained along with the wire into the housing/with the pressure die and the processing die t. The contaminated excess sodium soap powder is discharged from the hole J into the receiving hopper 33.

Assembling the die and T (Fig. 1) before pulling out is as follows.
and implement it. Sealing gasket io and processing die l,
Opening of cup J along with model/3 corresponding to the product to be pulled out! Insert into. Next, place the washer ll, pressure die and sealing gasket! Attach. The operation of cupping this assembly is carried out under a pressure equal to the yield point of the wire to be drawn. Finally, screw the cup into the cup J and remove the model 13 from the assembly.

When drawing the wire under conditions of hydrodynamic fluid friction, the lubricant is fed by gravity into the housing and a pressure in the layer of lubricant is built up on the front side and in the general area. As mentioned above, this pressure will reach the probe pressure. Therefore, the brittle molybdenum wire does not come into contact with the surfaces of the dice 7 and t. This is because the wire is coated with a lubricant, and the die t acts on the wire/3VC through this lubricant.

As a result, the surface of the line is substantially improved and K,
Scratches and cuts are removed.

The pressure of the lubricant not only acts from the inside of the die suffix and fK, but also acts from the outside of the die suffet and t through the gap 9 between the die and the wall of the housing l. In this way, the tensile stress that would otherwise occur and cause damage to the hard alloy die 7 is removed.

Further, the present invention will be described from the following illustrative example 9.

Example 1 Diameter 1. Ko0IIIB molybdenum @lj was baked in a kiln / 41L (Figure 2) / 04IO℃ temperature 1. Then @is, na) 13um soap! It was passed through a tank 16 containing an aqueous solution and held there for 3-j minutes.

Next, wire 15 was dried in a drying chamber 17 at a temperature of 70±io°C. A supplementary layer of sodium soap lubricant was formed on the surface of @tS. The moving speed of @ was estimated to be 27 genera/min.

Additionally, a layer of lubricant containing sodium-11um soap powder was added to the M8 surface. To accomplish this, before feeding the wire to die 7 and fK, belt conveyor 27 (third
), and then a metered portion of powdered lubricant was supplied from bottle J and deposited on the surface of the wire is.

For the purpose of feeding the wire to the die, the end of the wire is Ka.

It was sharpened by etching in a melt of NOl and introduced into the opening of the housing. At this time, the diameter of the wire is 0.0!1 greater than the diameter of the inlet opening of the pressure die 7.
m layers smaller.

The drawing was carried out through several pressure gauges and processing dies t arranged in series, and the working diameter of the front P die was gradually reduced as follows. That is, 1. Comb/-
/, 0-0.9-0. T! -0,t -0,7! -o
A unit for adding lubricant onto the surface of the flits was placed in front of each pair of pressure dies and processing dies. The diameter of the wire /3 was 8 l after the first pair of dice 7 and t, but was further reduced OwmTL after the second pair of dice. The diameter of the last wire was o, 4cm.

After the last pair of dies and t, the lubricant was washed off the surface of the wire is.

If the obtained diameter (0.4 mf) 1 m is to be drawn out further, it must be intermediately fired in order to relieve the internal stresses, which is carried out in a hydrogen or vacuum kiln in a customary manner.

To make a wire with a diameter of /, 2■, use primitive wires with diameters of C and C. Thus, one coil of O15 is used in a hydrogen kiln.
ooo ten! R) Baked at a temperature of ℃, then 1O-is
Hold for minutes. Then placed in a tank with a j% solution of sodium soap with a temperature of 70-90 °C,
Hold there for 3-3 minutes. Next K, line/3 in the drying room 7
It was dried for 10-12 hours at a temperature of 2[theta]-/~0[deg.]C. As a result, the sodium soap lubricant has an auxiliary layer! formed on the surface of i.

Etch the shoulder of the rust 13 with the melt of No. K to make it sharper and then introduce it into the opening of the no.

A plurality of king caddies 7 and processing dies tK arranged in series
, more drawing was performed, and its working diameter was reduced as follows. 2.2-89k-/, 70-/JO-/.

! ! -7. Ko O ■. The drawing was carried out at a speed of 90 - θ on 1 minute.

EXAMPLE The preparation of a 0.4 m diameter molybdenum wire 15 for drawing was carried out as described in Example.

Sharpening of the ends of the wires was done by dipping the wires in a solution of sodium hydroxide.

The drawing was carried out through multiple die spheres arranged in series. The diameter of the processing die t was gradually reduced as follows.

O16-θ, 3ri - OJJ -0, Tei de -〇,
Tei & -0, Tei Ko -0. Hiro0-01JI-OJ
A -0,Jl -0,32-OJOmwr, also 10
Drawing was performed at a speed of θ-1001117 minutes. The diameter of the inlet opening of the pressure die is 0.0 the diameter of the incoming wire.
I only surpassed 3 friends.

Example J Surface conditioning of a KTM diameter OJ- molybdenum wire for drawing was Vt*S as described in Example UK.

, 300 voids viscosity was used for lubrication. The lubricant has high adhesion ability and thermal conductivity.

However, due to the decrease in diameter of @/3, the drawing speed increases but the surface of the wire/S tends to shrink. This has an adverse effect on the adhesion of the lubricant. Therefore, it is desirable to use liquid lubricants.

The good thermal conductivity of the lubricant reduces the temperature at which the die sif and t are heated, and eliminates the heat generated due to the @/j expense in the die t.

A lubricant with the following composition was used.

Sodium soap ・・・・・・・・・・・・・・・
・・ JjOaOO、・・・・・・・・・・・・・・・
... 3M08.・・・・・・・・・
・・・・・・・・・・・・ I Hypoid Oil ・・・
・・・・・・・・・・・・Remaining drawing was carried out with a die sif and t arranged in series. Its use diameter was reduced as follows.

o,,yo,kof-0,J4-0. Koda −
O, here - 0. ko0-0゜it-o,tb
-o, i dat -o, i, y -o, iko -0.
// -0° 10 votes, done at a speed of 100-aOO 0/min - The diameter of the pressure dice exceeded the diameter of the incoming line IS by 0.0 degrees. Because the molybdenum wire 15 is drawn under conditions of fluid friction, it is now possible to use die spheres of hard metal material, which is much cheaper than diamond.

In an example of drawing a wire under conditions of fluid friction, a raw wire with a diameter of C and C of a difficult-to-process molybdenum alloy containing the following components was used.

SIJ CON・・・・・・・・・・・・・・・・・・
・・・・・・ O20 Rij iron ・・・・・・
・・・Old・・・・Seal ・ o, oi molybdenum ・
・・・・・・・・・・・・・・・・・・ All remaining work was carried out as described in Example/.

A wire lS having a diameter of 0.3mm is drawn out and 0.3mm diameter is drawn. /ms+
IL user K performed the same task as described in Example 3. A mixture of several ingredients is used as a disinfectant. Various components of the lubricant, given in the table below, are used depending on the type of wire 15 to be drawn.

table

[Brief explanation of the drawing]

FIG. 7 is a longitudinal sectional view of the assembled pressure die and processing die for drawing wire of molybdenum and its alloys; FIG. 1 is a schematic diagram of the device for applying an auxiliary layer of lubricant to the wire surface ff1K; Figure 3 is a longitudinal sectional view of the ennit for adding a layer of lubricant to the wire surface, the assembled pressure die and processing die, and the reference figure is a cross-sectional view taken along line ff-IV in Figure 3. It is a front view. l...Divided housing, 2.3...Cup, 4C, #.
...opening at the bottom of the cup, 6...thread, ri...pressure die, l...processing die, /4c...kiln for baking and oxidizing the wire surface, lj...wire, 16...
) A tank for an aqueous solution of 11um soap, /7...a drying chamber to remove moisture, /I...a tubular heat exchanger,
- Casing, yam...slanted bottom, core...hole for removing dirty and excess lubricant, easy...bottle for supplying fresh lubricant, core...lubricant A belt conveyor for delivering the materials to the die housing. F Hiro 1 Continuation of page 1 0 shots
Author Konstantin Ivanovich Yezersky Soviet Union Moscow Ulitsya Bobruyskaya 18 Korzys 1 Kabe 28 0 Inventor Vladimir Vasilyevii 0 Inventions 0 Inventions Valery Alksantorowitsch Korzukhin Soviet Union Chirchik Tashkentskoy Oplasty Uritsutsa Kuivysheva 18 Rikiichibe-13 Akira Vladimir Ivanovich Sein Soviet Union Tolyatstei Kuivyshevskoy・Oturastsky Leninsky Prospekt 13/43 Kabe 183 Author Oleg Pyotrovich Kolchin, Soviet Union Moscow Provsoyuznaya Uritsa 4 2/15 Kabe 116 Author Viktor Ivanovich Uralsky Soviet Union Sverdlovsk Ulitsutsa Beluomaiskaya 82 Kabe 71 USSR Chirchik Tashkentskoy Oplasty Ulitsutsa Kuivisheva 15 Tshirmyantsev Soviet Union Moscow Ulitsutsa Udartsova 4 Kabe 344 USSR Chirchik Tashkentskoy Oplasty Ulitsya・Metallugov 5 Kayape 4 Writer Vitaliy Ivanovich Dovgopol Soviet Union Sverdlovsk Pereulok Boevodeina 4 Rikiichibe-40 Writer Yuri Piotrowitsch Shinchenko Soviet Union Chirchik Tashkentskoy Oplast Ulitssa Avunbabayeva 5 Kabe 40 Author Igor Alksantorowitch Sopolov Soviet Union Sverdlovsk Prospekt Lenina 93 Kabe 72 0 Inventor Grigory Vasilyevich Bukhinin Soviet Union Magnitogorsk Chelyabinskoy Oturasti Uritsutsa Moskoskaya 16 Kabe 49 0 Inventor Polis Sergeyevich Borosa Branch Soviet Union Magnitogorsk Chelyabinskoy Avnast Uritsutsa Lenina 10 Kabe 73 [Phase] Inventor Vitaly Konstantinovich Matash Soviet Union Magnitogorsk Chelyabinskoy Oturastsy Uritsutsa Zhdanova 13/1 Karbe 8 0 Inventor Germanic Leonidovich Kolmogorov Soviet Union Rum Uritsutsa Wilbenskaya 19 Karbe 9 Nikov Soviet Union Chirchik Tashkentskoy Oplasty Uritsutsa Metallugov 7 Karbe 12 0 Inventor Tamara Valentinouna Kolchanova Soviet Union Chirchik Tashkentskoy Oplasty Uritsutsa Kuivysheva 20 A. Karbe 4 ■ Applicant Uralsky Nautinoysledvachersky Instiraad Chernykh Metalov Soviet Union Swerdlovsk Prospekt Lenina 10 1 Korps 2

Claims (1)

[Claims] l) Addition of a 311 aqueous solution of rum soap to the pre-oxidized surface of a wire of hemolybdenum or its alloys and drying with the resultant addition of a sodium soap lubricant to the surface of the wire. A layer of lubricant is applied to the surface of the wire, which is sodium soap powder, and the wire is pulled out by applying pressure to the layer of lubricant in front and in the honey-shaped area itself, while the lubricant A method for drawing wires of mo-17 or its alloys, characterized in that the lubricant layer and the auxiliary layer are removed from the wire surface by gravity feeding into these areas. J. Before adding an auxiliary layer of lubricant to the wire surface, the wire was subjected to high-temperature drawing for the purpose of smoothing the wire surface.
A method for drawing a line according to claim 1. When drawing a wire with a diameter of 0.3 mm or less, use a lubricant containing sodium 11 um soap powder, molybdenum disulfide, chalk powder, and hypoid oil. Add the following amounts, i.e. weight percent Nato IJum soap ・・・・・・・・・・・・・・・
Kos-4IiM08.・・・・・・・・・
・・・・・・・・・ −～ jOa OO,・・・・・・
・・・・・・・・・・・・ 3～i. Hypoid oil ・・・・・・・・・・・・・・・
A method for drawing the line as set forth in claim 1 or 1 of the claims, which is included as a remainder. 1) Add a JQB aqueous solution of sodium soap to the pre-oxidized surface of the wire of Puden or its alloy, dry the wire so that an auxiliary layer of sodium soap lubricant is formed on the surface of the wire, A layer of lubricant, which is sodium soap powder, is added to the surface of the area, and the wire is pulled out with pressure generated in front of the layer of lubricant and in the forbidden area itself, while the lubricant is applied to these areas. In an apparatus for carrying out a method for drawing wire of mo-13bdenum or its alloys, which consists in gravity feeding and then removing a layer of lubricant and an auxiliary layer from the wire surface, screws (4) K It comprises at least one split housing (1) in the form of two connected cups (3), the two cups of this split housing having an opening (4I) formed in the bottom for passing the wire through. , 1) and a housing (1
) with a king die (7) and a working die (7) mounted coaxially therewith and with a gap to the housing (1) and to each other, and arranged in the order of a technical process, the line surface housing (1) with a device for adding an auxiliary layer of lubricant to the
) and a unit for removing the lubricant layer and the auxiliary layer from the wire surface. ! ,@The device for adding an auxiliary layer of lubricant to the wire surface includes:
Kiln (i) for baking and oxidizing the surface of the wire (/3)
li), a tank (16) for an aqueous solution of nat-1]um soap, and a drying chamber (17), and the baking kiln (/4L) is connected to the drying chamber (1) via a tubular heat exchanger (7g). 17).
Equipment # listed in section. 6. The unit for supplying lubricant to the die is equipped with a casing (-) with an inclined bottom (薯) with holes (j) for discharging the contaminated excess lubricant; ) is a bottle (Δ
), a belt conveyor (27) for delivering the lubricant to the die housing (1)K, a truck housing, one end of the belt conveyor (27) is placed under the bottle, and the other end is placed under the bin. Hole (J) for discharging excess lubricant
3. A device according to claim q or 3, arranged on the . 5. The device according to claim 4, wherein the belt conveyor (27) for delivering the lubricant to the thin drawing die is made in the form of a trough.