Planning and monitoring of the plant construction – Gantt chart
When undertaking a new project, the STM team follows ISO9000 quality procedures, meeting to draw up a working schedule for planning and the supply of materials, to give an overall view of the project’s organization and the timescales involved.

Production and Assembly of machines
The production of mills and the mechanical construction of the planned installation is outsourced, depending on the quality, quantity and type of equipment to be built.

The support of external mechanical and electronic service providers is used frequently, and new suppliers are regularly evaluated against strict quality criteria.

The assembly of the machinery is carried out internally, by our specialized technical staff.

In-house operational testing
Before delivery, all machines are tested by electrical engineers for software functionality (instruments, control panels, motors etc); they are also subjected to grinding tests to check mechanical performance. Validation and acceptance tests take place in the presence of the client.

The preliminary operational test involves connecting the machine to the filter and grinding a small quantity of product in order to obtain a sample which is then tested for particle size in relation to variable machine parameters.

Our laboratory for the physical analysis of particles is equipped with instruments for the laser analysis of particle size, allowing us to carry out the requisite tests.

Grinding capacity and resulting particle size should correspond with the client’s requirements, and the machine’s performance must be approved by the client.

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