Nozzle Manufacturing Technology

Procurement Material

35XGSL steel - alloyed structural steel.

Carbon content 0.35%.

Alloying elements:

· chromium < 1.5%;

· manganese < 1.5%;

· silicon < 1.5%.

Cast steel, high quality, wear resistant.

Machining Allowance

Allowance - A layer of material that is removed from the surface of the workpiece in order to achieve the specified properties of the machined surface of the part.

On the basis of the calculation and analytical method, I determined the allowances for mechanical treatment of the nozzle blank for all dimensions. The allowance value is approximately 2-3 mm.

Setup for Milling Operation

Operation 090. Milling.

Equipment: universal milling machine 67B.

Accessory: accessory for milling of slot 5 * 20. Designation: 72277163.

Part is based on outer end surface mm with stop against opposite end face.

The slot milling takes place in 5 passes with an axial feed of 0.5 mm after each pass.

Adjustment for Drill Operation

Operation 130. Drill.

Equipment: vertical drilling machine 2H118.

Accessory: conductor for drilling of holes 0.8 mm. Designation: 73617899.

Basing the part to the conductor is carried out along the side surface of the nozzle.. The tool used for machining is the 0.6mm drill, which preprocesses the hole and the 0.8mm drill, which finishes the hole.

Description of the accessory

The designed fixture is designed to secure the part during milling of the slot 10. The accessory is fixed in the machine table by means of 2 nuts and 2 guide keys. The workpiece is installed on the stand. In the axial direction, the blank is clamped by means of a grip 3, radially by means of a cup 2. Grip has mechanical drive from pneumatic cylinder.