☰ Contents · Technology

Light and food industry

Lessons 29–30 · 2 lessons · O‘. O. Tohirov, I. Karimov, M. M. Maksimova. Technology (Texnologiya), textbook for Grade 8 of general secondary schools. Ilm Ziyo, Tashkent, 2019
30

The technological process: stages and equipment

Textbook: pp. 114–115
GoalKnow the stages of a technological process, a technological operation and the groups of equipment used in production.
New words
technological process · texnologik jarayontechnological operation · texnologik operatsiyamain equipment · asosiy qurilmatransport equipment · transport qurilmasi
Explanation

Technology means the knowledge and experience of the means and methods by which a product is made. A technological process is the sum of technological operations carried out one after another to turn raw material into a finished product. A technological operation is a self-contained piece of work done without a break at one workplace by one worker or a team: for example, cutting out fabric or rolling out dough. In making fabric or food the process usually goes through three stages: preparation (cleaning and sorting raw material), shaping (cutting out, cutting, moulding) and assembly of the prepared parts (sewing, mixing, joining). By their job, an enterprise’s equipment falls into three groups: main technological equipment, which works on the product directly; auxiliary equipment, which does not take part in the process but keeps it going (for example ventilation or repair equipment); and transport equipment, which carries, loads and lifts raw material and part-finished products from one machine to another. When a process is planned, the quality requirements for the product and the enterprise’s possibilities are considered together. In a factory or kitchen only trained staff switch machines on, protective clothing is worn and moving parts are never touched.

Worked examples
In a bakery the dough mixer is main equipment, the conveyor that carries flour is transport equipment, and the ventilation fan is auxiliary equipment.
In sewing a shirt, preparing the fabric (washing, ironing) is preparation, cutting is shaping, and sewing the parts together is assembly.
Class activity

In groups make a “workshop map”: draw the equipment of a kitchen or sewing workshop sorted into three groups and show the stages (preparation, shaping, assembly) with arrows. Do not touch real machines without the teacher.

Practice
1
What are the three stages of the process?
2
What is a technological operation?
3
Into how many groups is equipment divided?
4
Which group does a conveyor belong to and why?