Exigences pour le refoulement aux deux extr\u00e9mit\u00e9s.
Il est recommand\u00e9 d'utiliser la m\u00e9thode de forgeage libre ou la m\u00e9thode de refoulement par dessus de barre pour le refoulement des deux extr\u00e9mit\u00e9s, afin d'obtenir des fibres a\u00e9rodynamiques continues et uniformes. Les grains cristallins de cette fibre profil\u00e9e se d\u00e9placent le long de l'axe du ressort de torsion, et l'\u00e9coulement de la fibre cristalline m\u00e9tallique de l'arbre aux dents de la cannelure n'est pas interrompu.<\/p>
Exigences de traitement de surface.
La surface doit avoir une sur\u00e9paisseur d'usinage suffisante pour assurer la quantit\u00e9 de meulage finale. Le tournage et le meulage utilisent g\u00e9n\u00e9ralement un ma\u00eetre pour assurer la pr\u00e9cision de l'arc (ou de la conicit\u00e9), et aucune marque de couteau ou de meulage n'est autoris\u00e9e. Pour le traitement minimum de divers aciers lamin\u00e9s \u00e0 chaud de diff\u00e9rents diam\u00e8tres, pour les ressorts de torsion de s\u00e9rie, compte tenu des co\u00fbts de traitement de surface, des exigences sp\u00e9cifiques de surface et de qualit\u00e9 peuvent \u00eatre avanc\u00e9es pour les \u00e9bauches afin de r\u00e9duire le volume de traitement. Pour les ressorts de torsion qui ne traitent pas les surfaces s\u00e8ches (tels que les ressorts de torsion avec des sections transversales non circulaires), des restrictions sur le degr\u00e9 de d\u00e9carburation de surface, les d\u00e9fauts de surface et les tol\u00e9rances dimensionnelles de surface doivent \u00eatre propos\u00e9es.<\/p>
Exigences pour le traitement thermique.
Le traitement thermique est le processus cl\u00e9 pour la fabrication de ressorts de torsion \u00e0 haute r\u00e9sistance. Pour le mat\u00e9riau 45CrNIMOVA, la duret\u00e9 du traitement thermique est augment\u00e9e \u00e0 HRC52-58, puis la forte torsion peut permettre au ressort de torsion d'obtenir le meilleur effet de torsion fort et de maximiser la contrainte de travail du ressort de torsion.<\/p>
Exigences pour le traitement de renforcement de surface.
Afin d'augmenter la dur\u00e9e de vie en fatigue du ressort de torsion, le ressort de torsion doit \u00eatre renforc\u00e9 m\u00e9caniquement. G\u00e9n\u00e9ralement, des m\u00e9thodes de renforcement de surface telles que le laminage et le grenaillage sont utilis\u00e9es.<\/p>
Exigences de protection de surface.
Afin d'\u00e9viter la corrosion et les dommages \u00e0 la surface m\u00e9canique, un traitement de surface (tel que la phosphatation, le traitement de la peinture) et des m\u00e9thodes telles que le ruban en caoutchouc, le tissu en nylon et la peinture \u00e9poxy peuvent \u00eatre utilis\u00e9s pour la prot\u00e9ger.<\/p>","protected":false},"excerpt":{"rendered":"
Il est recommand\u00e9 d'utiliser la m\u00e9thode de forgeage en matrice libre ou la m\u00e9thode de refoulement par le haut pour le refoulement des deux extr\u00e9mit\u00e9s, afin d'obtenir des fibres profil\u00e9es continues et uniformes. Les grains de cristal de cette fibre profil\u00e9e se d\u00e9placent le long de l'axe du ressort de torsion, et le flux de 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