Robco Expert

TENIR COMPTE DE L'EXPANSION ET CONTRACTION THERMIQUE LORS DE L'USINAGE DU NYLON Thomas Cipriani – Product Specialist at Robco Lorsque l'on travaille avec du nylon, nous devons comprendre qu'il réagit aux fluctuations de température. La meilleure procédure à suivre lors de l’usinage du nylon en usine est de le découper à une température d’environ 24°C; si nous ne le faisons pas, nous risquons d'avoir des problèmes dimensionnels après coup. Le nylon étant un plastique thermique, il se dilate lorsqu'il est soumis à des températures plus élevées et se contracte à des températures plus basses.  Toujours prendre la température d'installation en considération.  Voici une formule de travail pour vous aider lorsque vous souhaitez usiner des pièces à base de nylon: Voici quelques exemples: > A) Exemple d'expansion: En installant à 78°F, la température maximale de fonctionnement peut atteindre 150°F et la pièce mesure 120" de long 150° - 78° = 72° de change...

TAKING INTO ACCOUNT THE THERMAL EXPANSION & CONTRACTION WHEN MACHINING NYLON Thomas Cipriani – Product Specialist at Robco When working with Nylon material, we must understand that it reacts to temperature fluctuation. The best procedure to follow when machining Nylon at the factory is to cut it to size at a temperature of about 75°F; if we don't, then we risk having dimensional issues later on. Nylon is a thermal plastic, hence it will expand when subjected to high temperatures and contract at low temperatures. Always take into account the installation temperature. Here is a working formula to help you when machining Nylon based parts: Here are some examples: >A) Expansion Example: Installing at 78°F the maximum operating temperature can reach 150°F and the piece is 120” long: 150° - 78° = 72° temperature change 72 x 120 x .00005 = .432” expansion >B) Contraction Example: Installing at 78°F the lowest operating temperature could reach -200°F and the piece is 120” long: 7...

  Top 5 Differences Between More Traditional Extruded Nylon and Cast Nylon Thomas Cipriani – Product Specialist at Robco 5 – A cast nylon material inherently has less stress than extruded nylon ,  which then allows it to handle higher levels of impact 4- Lower moisture absorption gives cast nylon a higher dimensional stability than extruded nylon which then allows it to be used in more humid applications with less concern for dimensional change which would then change the characteristics of the nylon 3 – The more crystalline structure of cast nylon gives it a higher strength than extruded nylon   therefore allowing it to have a higher tensile, flexural and compressive resistance  2 – Cast nylon is available in smaller diameter rod than extruded nylon  is when looking at premium bearing grades  therefore giving you more dimensional options for rods 1 – Cast nylon has a 20 degree higher operating temperature than extruded nylon   allowing it to handle hi...