Seam connection. The Pittsburgh fold is an ideal connection method for straight or curved boxes. A smooth, dense and aesthetic connection is obtained without any additional processing when using TRUMPF F 300 series tools. The Pittsburgh fold ("American") is obtained by continuous roller running-in, without damaging the surface and coating. Automatic feed control guarantees seam accuracy and uniform joint density. TRUMPF folding machines are suitable for both straight boxes and bends, with a minimum internal radius of only 300 mm.

To install grilles, blinds, valves and air conditioners themselves, it is often necessary to make cutouts in an already mounted box. Especially for this application, TRUMPF has developed the C 160 slotted scissors, which allow you to make cutouts with great accuracy, without deforming the sheet, and the chips do not get inside the box, because they stand out above the surface of the sheet with a continuous tape. You can start and finish the cut at any point on the surface of the box; by turning the small handle on the cutting head, the chips are bitten off at the desired point. The edge of the cut is perfectly smooth. These scissors can be used to cut welded spiral seams on round ducts up to 2.5 mm thick.

1. Name the composition of the joint team of locksmiths.

2. Explain the principle of operation of the instrument from the main set (one, at the student's choice).

3. Describe the method of connecting the flange to the end of the duct.

4. What is the reason for the location of the connecting element relative to the duct?

5. What are the advantages of a folding connection?

The production of installation ventilation works at facilities implies preparation for the installation of ventilation equipment, which requires careful preparatory work. Special attention should be paid to the reality of the implementation of design solutions by the installation team, both technically and in terms of execution.

The project of work production is the basic guide for the organization and production of installation work at the facility. Project of work production helps to plan all the preparatory work, including the execution of orders for air ducts and applications for ventilation equipment and materials, to determine the storage locations of bulky ventilation parts. The project of work production contributes to the uninterrupted conduct of installation work, improving the quality of installation.

The complete project of work includes the following sections:

1) situational master plan, usually on a scale of 1:400, with reference to the storage locations of air ducts and ventilation equipment and an intra-building transport scheme;

2) schematic plan of the object with drawing of axes and locations of ventilation equipment;

3) list of ventilation equipment supplied by the customer;

4) characteristics of air ducts for ventilation systems and a list of installation drawings or sketches on them;

5) schedule of receipt of ventilation blanks (ducts and standard ventilation parts) to the facility;

6) the schedule of receipt of ventilation equipment, agreed with the customer;

7) calendar (network) schedule of work with deadlines for the delivery of the object;

8) statement of basic and auxiliary materials;

9) instructions on methods and methods of installation work and safety;

10) a statement of the necessary mechanisms, tools and means of small mechanization specifically for the object;

11) production calculations and summary statements of labor costs and wages;

12) the schedule of the need for workers.

In the calendar (network) schedule of work, the deadlines for preparing the object or individual premises for installation, the deadlines for the completion of construction work in ventilation chambers, the deadlines for the supply of electricity to ventilation equipment and hot water to heaters and, most importantly, the deadlines for the installation of ventilation systems should be determined. A schedule for the delivery of ventilation equipment to the facility must be agreed with the customer's organization in advance.