Plumbing tools

Cutting material is the first operation in the technological procedure of wrench manufacturing. Optimum design of a cut provides optimal use of material.

Forging technology at Unior ensures excellent strength characteristics of wrenches. Notably, it maintains appropriate fiber orientation in a forged part, leaving it uninterrupted and the same as in a rolled blank. That characteristic of forged parts is vital for achieving the characteristics of products exposed to heavy and dynamic loads.

Superfluous material around a forged part is removed using a special-purpose trimming tool; material is trimmed to the desired shape, always making the weight of trimmings as low as possible.

An appropriate geometry of the jaw serration is produced using broaching technology.

the entire working of the jaw is done using CNC machines. Clamping devices on the machines provide the accuracy required for the quality functioning of the wrench.

Annealing and tempering procedures are used to give pliers an adequate microstructure and optimal strength characteristics that can withstand above-standard loads and assure a long service life. A sanding operation is used to clean the surface and prepare it for further operations.

Cutting material is the first operation in the technological procedure of wrench manufacturing. Optimum design of a cut provides optimal use of material.

A cut is heated in a drop forging machine and transformed into the desired shape or a pair of jaws that is still covered with excess or spare material after forging. In drop forging, material is reshaped in heated form, maintaining a proper course of fibres and providing a forged product with the most favourable strength characteristics for demanding dynamic loads.

Superfluous material around a forged part is removed using a special-purpose trimming tool; material is trimmed to the desired shape, always making the weight of trimmings as low as possible.

Appropriate geometry of the jaw serration is produced using broaching technology, thus ensuring an optimal grip.

A rivet provides a firm bond between both jaws.

heat treatment with hardening and tempering is intended to improve the structure of the steel, to provide greater hardness and toughness and other properties required to overcome the strain that work with such products requires.

local heating and tempering of the jaw serrations ensures a high degree of hardness of the functional part of the wrench. By hardening, we can achieve the optimum microstructure and the required hardness, which ensure a long service life for the jaws.

a protective colour is applied using powder coating technology, which gives the product a professional look and also serves as surface protection.