fabio_kht
Guest
Good morning, I am new to the forum and I ask help to solve a technical problem regarding the stiffness of a needle for a syringe.
We currently have a syringe in the company to dose liquid samples. the needle of this syringe, is a cylinder of diameter 1 mm and length 40 mm, made in aisi 303, which sliding inside a plastic tip, works by piston to aspire and inject the liquid. it is made for turning having the distal part of diameter slightly greater to ensure an appropriate seal.
the great problem is that it bends with a lot of ease (for example, a needle of a syringe for injections or a needle for sewing, which are made for lamination, being always constant section). I was wondering if someone had ideas to improve stiffness, vary the type of stainless steel, operate a heat treatment, or maybe know what the parameters are to be kept in this case. I explain: theoretically I thought I had to look for a stainless steel with more elastic module, but it seems that it is not the only parameter to consider. someone speaks of hardness, but should not only be linked to superficial properties and not affect in the specific case?
Thank you for your help.
We currently have a syringe in the company to dose liquid samples. the needle of this syringe, is a cylinder of diameter 1 mm and length 40 mm, made in aisi 303, which sliding inside a plastic tip, works by piston to aspire and inject the liquid. it is made for turning having the distal part of diameter slightly greater to ensure an appropriate seal.
the great problem is that it bends with a lot of ease (for example, a needle of a syringe for injections or a needle for sewing, which are made for lamination, being always constant section). I was wondering if someone had ideas to improve stiffness, vary the type of stainless steel, operate a heat treatment, or maybe know what the parameters are to be kept in this case. I explain: theoretically I thought I had to look for a stainless steel with more elastic module, but it seems that it is not the only parameter to consider. someone speaks of hardness, but should not only be linked to superficial properties and not affect in the specific case?
Thank you for your help.