Aug 23, 2019
If a thread needs to be checked to ensure the quality of a part, the threaded hole is tested with a screw limit plug gauge.
The cylinder of the go-side shall be screwed into the thread without exerting force.
This is done over the complete length of the thread.
The no-go gauge of a screw limit plug gauge is marked with a red dot or a red stripe.
It shall be screwed into the thread as well without exerting force. During unscrewing, the number of turns are counted. If the number is higher than three, the thread is faulty.
The respective limit gauges can be found at each end of the screw limit plug gauge.
Measuring Technology: A screw limit
plug gauge M16x1,5-6G LH. Red marked is the no-go gauge.
Related topics:
Measuring Technology
This information and services are provided by:
This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Apr 8, 2019
A plug-on injection unit to an existing injection molding machine used for multicolor or multicomponent molding is called Secondary Injection Unit.
It is equipped with its own controller and is flexible in installation. It can be mounted on top or on non-operator side of a tool. The Secondary Injection Unit can inject into the parting line as cold runner system or into a hot runner system.
Dec 14, 2018
Thermoplastics which consist of approximately 80% of crystalline structures are called semi-crystalline materials.
Their structure is ordered with some disordered areas in between.
The ordered areas give the material strength and stiffness.
Due to the higher stiffness, the material will break rather than bend when a load is applied.
Typical examples of semi-crystalline polymers are PA, POM, PP and PE.
Nov 9, 2018
Especially for big parts as well as if weld lines shall be avoided sequential injection is useful.
This means that valve gates will be opened and closed one after the another.
Weld lines can be avoided by overflow the gate before opening it.
The quality of the part is improved.
Short flow length make it possible to reduce the filling pressure.
Opening and closing single gates allows to get the packing pressure in requested areas.
Feb 20, 2024
An important part of a unit cost calculation is the process of setting up an injection mold.
Set-up is the preparation of the injection molding machine for the production of a specific molded part.
This includes setting up the molds, adjusting the machine parameters and checking the production processes.
The aim is to ensure smooth production. Efficient set-up is therefore crucial in order to maximize productivity and ensure the quality of the parts produced.
