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Spotlight
Article
31.08.2021

Pin-sharp coating

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28.07.2021

Corrosion protection at the heart of the wind energy unit

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04.07.2021

A brittle topic

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15.06.2021

How to make hot-dip galvanised bolt sets even better

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03.05.2021

Evolution of corrosion testing

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19.11.2020

Zinc flake systems provide long-lasting and reliable protection for offshore structures

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22.10.2020

Zinc flake: Renewed approval issued for GMW 14083!

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25.09.2020

Zinc flake against rust - High-performance surface protection for concrete screws

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09.09.2020

MAN 183-3: New zinc flake system approved!

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18.08.2020

Proper protection for the beloved classic: Effective rust protection from the can for Triumph Spitfire parts

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17.07.2020

Outdoor weathering study on Heligoland completed

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17.12.2019

Corrosion protection with zinc flake systems   – yesterday, today, tomorrow

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26.09.2019

Avoidance of hydrogen embrittlement

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20.08.2019

Assured corrosion protection for wind energy units

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16.08.2018

A delicate subject

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14.08.2019

Material savings thanks to correct corrosion protection

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01.08.2019

High-Quality Corrosion Protection for Lightweight Components

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01.02.2019

Smooth fastenings

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21.01.2019

Protected against wind and weather

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19.09.2018

United against hydrogen embrittlement

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19.09.2018

Keep rolling - secure protection for wheel hubs

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01.02.2019

Coating chassis parts correctly

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26.07.2018

Screw connections in wind turbines: Optimal coatings for trouble-free assembly

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24.07.2018

Safety first: Corrosion protection for control and trailing arms

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05.06.2018

Protection layer by layer

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01.03.2018

Long-term protection for chassis components

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06.02.2018

Rust-free driving: Test procedures for corrosion protection cars

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21.11.2017

Galvanising 2.0

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21.11.2017

High-performance protection for safety components and the environment

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01.09.2017

Corrosion protection for trucks and trailers

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Extbase Variable Dump
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   date =>protectedDateTimeprototypeobject (2021-06-15T02:00:00+02:00, 1623715200)content =>protected'<p><strong>Screwed fasteners are one of the most important components in win
      d energy units, bridges and steel construction. Alongside diverse factors su
      ch as material and tools, varying weather conditions also have an important
      influence on coefficients of friction and therefore the screwed fastening as
       a whole.</strong></p> <p>But let us start at the beginning: there are diff
      erent types of screwed fastening in use today: ISO bolt sets, friction grip
      bolt sets and bolt sets with calibrated pretension. All of these connections
       consist of a bolt, at least one washer and a nut. They are often made of hi
      gh-tensile material.</p> <p>The coefficient of friction is a key element of
       a secure screwed fastener. This value describes the ratio of pretension and
       torque and is determined by two factors: thread friction and head friction.
       The load pressure that affects the surfaces is the pretension, which is als
      o responsible for the elongation of the bolt and the corresponding spring ef
      fect. Torque, on the other hand, affects the surface of the thread and the c
      ontact area, it is divided into three partial torques: thread torque, head f
      riction and the part translated directly into pretension. Consequently, the
      pretension ultimately achieved with prescribed torque is dependent on the co
      efficient of friction.</p> <p><img alt="" data-htmlarea-file-table="sys_fil
      e" data-htmlarea-file-uid="8159" height="209" src="fileadmin/_processed_/a/9
      /csm_Tortendiagramm_9364bd1017.png" width="300" style="" /><br /> <em>Yellow
       describes the head friction, purple the pretension and pink the thread fric
      tion.</em></p> <p>The friction µges and k-factor are influenced by numerou
      s different factors: material pairing, surface, lubrication or wear. However
      , ambient temperature, humidity and rain also have a considerable influence
      on screwed fastenings. We are not only talking of elastic deformation here;
      in the worst case this may result in sheared bolts or failure to achieve the
       necessary pretension. T...
' (4193 chars) sliderFiles =>protectedTYPO3\CMS\Extbase\Persistence\ObjectStorageprototypeobject (empty)mainImage =>protectedTYPO3\CMS\Extbase\Domain\Model\FileReferenceprototypepersistent entity (uid=2134, pid=565)uidLocal =>protected8160 (integer) originalResource =>protectedNULL uid =>protected2134 (integer) _localizedUid =>protected2134 (integer)modified_languageUid =>protected2 (integer)modified_versionedUid =>protected2134 (integer)modifiedpid =>protected565 (integer)isSpotlight =>protectedFALSE links =>protectedTYPO3\CMS\Extbase\Persistence\ObjectStorageprototypeobject (empty)contact =>protectedNULL downloads =>protectedTYPO3\CMS\Extbase\Persistence\ObjectStorageprototypeobject (empty)recommenderinfo =>protectedConception\CcRecommender\Domain\Model\RecommenderInfoprototypepersistent entity (uid=1087, pid=565)name =>protected'Fachbeitrag How to make hot-dip galvanised bolt sets even better 15.06.2021.' (76 chars) contentType =>protected'Article' (7 chars) contentUid =>protected'79' (2 chars) contentDate =>protectedDateTimeprototypeobject (2021-06-15T02:00:00+02:00, 1623715200)keywords =>protectedTYPO3\CMS\Extbase\Persistence\ObjectStorageprototypeobject (empty)recommendations =>protectedTYPO3\CMS\Extbase\Persistence\ObjectStorageprototypeobject (empty)_languageUid =>protected2 (integer)modifieduid =>protected1087 (integer) _localizedUid =>protected1087 (integer)modified_versionedUid =>protected1087 (integer)modifiedpid =>protected565 (integer)sectors =>protectedTYPO3\CMS\Extbase\Persistence\ObjectStorageprototypeobject (empty)sectorClasses =>protected'' (0 chars) infoBoxContent =>protected'<p>Further information of the company Peiner Umformtechnik can be found here
      :&nbsp;<a href="https://www.peiner-ut.com">https://www.peiner-ut.com</a>&nbs
      p;</p>
' (158 chars) seoTitle =>protected'How to make hot-dip galvanised bolt sets even better' (52 chars) seoDescription =>protected'Peiner Umformtechnik and Dörken have teamed up and searched for a solution.
       And found it!
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