How to deal with the assembly "disease" BMPT "Terminator". UVZ told

At the Center for Research and Testing of Materials (CIMM), Uralvagonzavod reports a previously identified problem with large-sized parts of the Terminator BMPT. The point is that there were problems when performing high-quality welding. The reason, as it turned out, was as follows: the nodes of special steel were magnetized, and their magnetic field prevented the welding work at the proper level. The press service of the UVZ reported that at that time the Terminator BMPT was actually being prepared for the Victory Parade on Red Square.

To remove the residual magnetization were considered three main ways. Method one: heated to temperatures in the range 760-780 degrees Celsius. Method two: mechanical impact - for example, strong shock or vibrating waves. Method Three - magnetic field of opposite orientation. The first two methods were abandoned, since they could damage the material from which the parts were made. There was a third way, but its application was extremely problematic due to the dimensions of the parts.

From the press service UVZ:

It was necessary to disassemble the practically ready protection elements for the Terminators into small parts, remove the magnetization from each of them and assemble them again.

A more rational solution was proposed. Engineers manufactured additional magnetic cores by installing them in a magnetic powder universal flaw detector. This made it possible to increase the magnetic field of special equipment by about 50%. In the end, these indicators of a magnetic field of opposite orientation were enough to demagnetize large parts of the Terminators.

UVZ:

"Terminators" made and sent to the Victory Parade on time.

As a result, the idea of ​​Uralvagonzavod engineers received the status of the rationalization proposal “Method of demagnetization of large-sized parts of the nodes”. This made it possible to reduce funds for the demagnetization of military equipment.

In 2018, UVZ expects savings from this and other rational proposals in the amount of about 44 million rubles.

For reference: The first military exercises with the use of BMPT "Terminator" will be held in the Urals in 2019 year.

Comments

[kjhg]

It was necessary to disassemble the practically ready protection elements for the Terminators into small parts, remove the magnetization from each of them and assemble them again.

Interesting article. But how then did they cook such seams? After reading the article, we can conclude that before they turned out to be of poor quality, or did the large nodes completely disassemble and demagnetize?
The very concept of using such tank support vehicles is still controversial and has more opponents than supporters. It seems to me, therefore, the Moscow Region does not purchase them in large quantities.

[Bull Terrier]

Or new special steel, that’s the difficulty

[maxim947]

From time to time, it is required to demagnetize ships, this is the specifics of operation, the method of a hundred years at lunch .. but here another case is evident.

[yehat]

the ship should have been called perch or zebra

[maxim947]

These are not strips, but a cable for demagnetization

[yehat]

I know, but it doesn't look different from this

[Zaurbek]

... does the T-90 have different steel?

[Albert1988]

Quote: Zaurbek

..and the T-90 tank has a different steel?

What is the modification of the T-90 tank? There are many steels and new ones appear regularly enough ...

[Waldemar]

The presence of such ferromagnetic properties does not say anything good about the quality and composition of this "special steel". Go and rust from the simple rain. Are they there that they are made of simple iron without alloying additives? Here we have a hundred-year-old ship floating without a speck of rust, made even under the king, scientists only scratch their turnips what kind of technology was used. WWII tanks from the swamps pull out all the intact if washed, even start the engine turns out. And here they have special steel. Magnetic. Capitalism. Save on metal go and bastards

[Starover_Z]

Quote: kjhg

The very concept of using such tank support vehicles is still controversial and has more opponents than supporters

But the test of the fighting in Syria did not show them anything? Or just didn’t specifically enter the battle, but fired from the removal?

[Wedmak]

I didn’t think that magnetization somehow impedes welding ... Technologies go and the further, the more factors that impede going. And the more insignificant factors ... Surprisingly simple.

[reservist]

that's what googled

DC steel welding is often accompanied by magnetic blast effectcaused by residual magnetization. In this case, the stability of the process worsens, metal splashing occurs, defects such as pores, incomplete fusion, imperfections, and slag inclusions are formed in the weld, and sometimes welding becomes simply impossible due to arc failure and sticking of the electrode.

[URAL72]

Chatterbox is a godsend for the spy. Cut off his tongue. Now Ukrainians will have no bones crackers ...

[parkello]

So after all, they also set ships to demagnetize. any welded structure must be demagnetized before it can be worn from the inside. there wiring, engine, control levers, etc. . during welding, an electrical short circuit is used, and this discharge magnetizes to some extent. and then drilling also magnetizes, and it is necessary to remove the load from the housing or it will begin to fall apart during operation.

[lucul]

But you don't need to give out your "know-how". In vain they let their language go.

[lis-ik]

MISIS (Moscow Institute of Steel and Alloys) has long and successfully worked on this subject, it is not clear why the plant is now solving these problems?

[Strashila]

Previously, there was one thing ... state, now private shops ... everyone snaps thinking only of himself.

[Mestny]

Did Mukhomorov bite grandfather for 17 years?

[Jerk]

Well, this is a normal situation - when mastering a new technology, 10 or two secondary ratsuhs always come out, and therefore patents - it’s everywhere. The technologies are new, the problems, too, since the technology has gone, then the problem is NEW - they decided, this is a patent. Well done, the Urals, but this is not a feat, everyday life)
I didn’t understand one thing - what's new in the Terminator? Unprincipled, it seems, or is there also another armor?

[DenZ]

Quote: lis-ik

MISIS (Moscow Institute of Steel and Alloys) has long and successfully worked on this subject, it is not clear why the plant is now solving these problems?

Yes, because to assimilate money (even successfully) and work on a solution to the problem are two big differences, and the first Muscovites succeed (more than once noticed)

[lis-ik]

Quote: DenZ

Quote: lis-ik

MISIS (Moscow Institute of Steel and Alloys) has long and successfully worked on this subject, it is not clear why the plant is now solving these problems?

Yes, because to assimilate money (even successfully) and work on a solution to the problem are two big differences, and the first Muscovites succeed (more than once noticed)

All the armor and protection of combat wheeled and tracked vehicles was developed and successfully tested at MISIS during the Soviet era, etc. Be careful in your unreasonable hatred of MOSCOW.

[Jerk]

And I will also remind you, for example, Kurchatovka, FGUP VNIINM, ITEP, Moscow Region "I Obninsk" (read as one) ... All the atomic energy, together with the Strategic Missile Forces ... everything else was worked out in Moscow, even the production chains themselves are experimental - is there an atom in the country, peaceful and not peaceful? An example for. Although there was a lot at the Lighthouse, I also got excited.
And really, be careful.

[lis-ik]

Quote: Jerk

And I will also remind you, for example, Kurchatovka, FGUP VNIINM, ITEP, Moscow Region "I Obninsk" (read as one) ... All the atomic energy, together with the Strategic Missile Forces ... everything else was worked out in Moscow, even the production chains themselves are experimental - is there an atom in the country, peaceful and not peaceful? An example for. Although there was a lot at the Lighthouse, I also got excited.
And really, be careful.

And Troitsk, the former Akademgorodok, where now "IZMIRAN", lasers and any other crap that at the moment can outshine everything that is happening on this planet! And all this is hated MOSCOW.

[Brylevsky]

Quote: Wedmak

I did not think that magnetization somehow interferes with welding ...

The workpiece's own magnetic field "drives away" the welding arc. The electric welding arc can deviate from its normal position when exposed to magnetic fields that are unevenly and asymmetrically located around the arc and in the workpiece to be welded. This phenomenon is called "magnetic blowing". The effect of magnetic fields on the arc is directly proportional to the square of the current strength and becomes noticeable at welding currents of more than 300 A. The welding arc is a "conductor" with current, which has its own magnetic field. The welding current, passing through the electrode and metal, also creates its own magnetic field. As long as the magnetic fields surrounding the arc are symmetrical with respect to the arc, the arc propagates over the shortest distance. An asymmetric magnetic field causes the arc to deflect towards a lower magnetic field density. At the same time, the longer the arc, the stronger the deflection ... Ural factory workers invented the "bicycle" - the phenomenon of "drift" of the arc under the influence of an asymmetric magnetic field has been well studied and methods of dealing with it (except those listed in the article) have long been successfully used in welding technology. productions.

[Brylevsky]

Quote: lis-ik

it is not clear why the plant is now solving these problems?

Because there are no old frames. And the training of young specialists leaves much to be desired ... Professional illiteracy, unfortunately ...

[Brylevsky]

Quote: Jerk

Or is there also another armor?

Perhaps the matter is in the composition of armored steel. Other alloying components and / or their different percentage ratio ... a change in composition resulted in a change in the intrinsic magnetic field of the material, which required a change in production technology. Normal workflow ...

[Doliva63]

Quote: Brylevsky

Quote: Jerk

Or is there also another armor?

Perhaps the matter is in the composition of armored steel. Other alloying components and / or their different percentage ratio ... a change in composition resulted in a change in the intrinsic magnetic field of the material, which required a change in production technology. Normal workflow ...

Yeah, but the tanks that UVZ "stamp" have different armor?

[Brylevsky]

I suggested. In addition, not “other armor”, but the chemical composition of the new armor steel may be different. Another magnetic field appeared in it, which did not exist before, and which forced to change the production technology?

[K-50]

And what kind of "ship demagnetization" is impossible?
Maybe with the naval "experts" this topic "grind"?

[Brylevsky]

We are now talking about various phenomena. The demagnetization of the ship's hull is designed to reduce to an acceptable value the level of the intrinsic magnetic field of the hull steel. It is well known that naval mines, including, among others, have magnetic proximity fuses. And the article talks about the difficulties of performing high-quality welds in an asymmetric magnetic field. This is not the same thing. This BMPT will not be completely demagnetized, since the magnetization of only the armored corps will be removed. The tank has other parts made of steel that are not “demagnetized”. Guns and tracks, for example ...

[Strashila]

"Method two: mechanical action - for example, a strong shock or vibration waves." ... with ultrasound ... they would not only solve magnetic issues, but would remove the residual stress in the structure. I realized one thing ... mastered the money.

[Doliva63]

Quote: Strashila

"Method two: mechanical action - for example, a strong shock or vibration waves." ... with ultrasound ... they would not only solve magnetic issues, but would remove the residual stress in the structure. I realized one thing ... mastered the money.

And rightly so, iba capitalism in the yard

[Reserve buildbat]

Quote: lis-ik

Quote: Jerk
And I will also remind you, for example, Kurchatovka, FGUP VNIINM, ITEP, Moscow Region "I Obninsk" (read as one) ... All the atomic energy, together with the Strategic Missile Forces ... everything else was worked out in Moscow, even the production chains themselves are experimental - is there an atom in the country, peaceful and not peaceful? An example for. Although there was a lot at the Lighthouse, I also got excited.
And really, be careful.

And Troitsk, the former Akademgorodok, where now "IZMIRAN", lasers and any other crap that at the moment can outshine everything that is happening on this planet! And all this is hated MOSCOW.

And in Obninsk, as far as I know from my friends living there, they believe that Obninsk is not Moscow, but a city in the Kaluga region). Nice, by the way, the town)))

[Semurg]

One of the first batches of terminators was delivered to us, which means that perhaps the seams did not work out very well. Uvz is responsible for the delivered product.

[Severok]

Is it really problematic to demagnetize a BMPT case? Someone knows nothing about the history of the Second World War, when Soviet physicists demagnetized entire ships in the fleets of the USSR. SHIPS. And here from BMPt make a problem.

[Brylevsky]

Quote: Semurg

maybe the seams didn't work out very well.

In general, a self-respecting company always carries out flaw detection of all welded seams before selling the finished product. There are many methods, from X-ray or ultrasound testing to "high-tech" test "for kerosene". And the buyer, in principle, can perform such a check himself: the testing equipment costs relativelynot expensive, and chalk and kerosene generally cost a penny ... I hope the owners of your BMPT are not going to drive them under water? Then the listed verification methods will be quite enough ...

[Brylevsky]

Wrong...comparatively NOT expensive of course...

[Brylevsky]

Quote: Severok

Is it really problematic to demagnetize a BMPT case?

No, actually. But the point is different. As trivial as it may sound, the product will be demagnetized from the magnetic field that it already has, and this is not a problem. The problem is that if you just change the amount of metal in the item, or its position in space, the magnetic field will change ... The tank will shoot part of its ammunition - the field will change; will unfold the tower - the field will change ... but it will simply drive away a few kilometers from the place where the demagnetization is carried out - the field will change ... Thus, the product can be completely demagnetized only "here and now", and then, for a fairly short time. Because working electrical consumers will cause a "pickup" of a magnetic field on the case - if it was not there before, then it will appear and will remain there. And, most importantly, this is the Earth. Lodestone. With continuously drifting magnetic poles ... For this reason, all ships periodically undergo a degaussing procedure. And the actual and residual magnetic field in the "patient" is measured by special ships of the auxiliary fleet - SFP, - "ship of physical fields".

[Dzafdet]

Somehow long ago. During the USSR, I went to courses on USO computers, there I met a man from Nizhny Tagil. He told me a similar story about the selection of power thyristors for a rolling mill. He assembled a stand on which he checked and selected them according to parameters. If set without selection, then they quickly burned ... And only he could work with him ..

[awg75]

It seems to me alone that such information does not belong in the public domain?