How A Fire Hose Nozzle Is Manufactured?
The fire hose nozzles is a critical equipment for fire fighters. Previous article we’ve discussed about how does a fire hose nozzle work. Now let’s take a thorough look at how a fire hose nozzle is manufactured. First thing first, I would like to touch upon the following eight most important steps that the nozzle manufacturer needs to go through:
- purchase of materials
- lather
- milling machine
- surface treatment
- assembly
- testing
- packaging
- shipping
Video from youtube channel: DSCDocumentries
Lathe is a machine tool designed to process a firmly hold material by rotating the workpiece about an axis of rotation. By about 1797, Henry Maudslay, a British machine tool maker, developed the first modern screw-cutting lathe, which have been commonly used to cut metal into a cylindrical shape. By means of various specified tools applied to the workpiece, the lathe for general purposes can perform multiple operations, such as inner/outer circle processing, drilling, threading, slot cutting, end processing, OD turning, centerline spot drilling, OD/ID grooving, centerline reaming, taper turning, form turning, knurling, and spring coiling. Our company uses lathes to develop parts and body shapes of the products.
Milling machines are tools designed to machine solid materials such as metal. In 1818, the milling machine was invented by, among others, an American engineer named Eli Whitney. The cutting process of using a milling cutter to remove material from the workpiece surface is called milling . A milling machine can shave off the workpiece or use specific milling cutters to mold surfaces and form spiral grooves or shapes of cog teeth.
As the milling cutter operates, the workpiece is placed on the milling machine’s table or held in the indexing head while the cutting edges (flutes or teeth) of the tool shave off chips from the workpiece by repeatedly cutting into and out of the material, which is pushed off the workpiece in tiny clumps to form chips.
Milling machine metal processing service: As opposed to the lathe, milling machine uses high-speed rotating cutter to drill, trim, and carve the metal workpiece which is held and fixed firmly, thus drilling holes out of the nozzles to connect pistols and match the grooves of other components.
Surface treatment
Positive electrode is part of the electrode passivation treatment used to increase the thickness of the oxide layer on the surface of metal parts. Aluminum alloys in general are oxidized easily. Though the oxide layers have certain passivation effect, long-term exposure will erode the oxide layers, which leads to loss of protection. Therefore, positive electrode treatment takes advantage of its oxidation-prone characteristic to prevent aluminum materials from oxidation by means of electrochemical approaches to control the forming of oxide layers while increasing the surface mechanical properties. On the other hand, various chemical reactions result in a wide variety of colors, making materials so attractive that they are widely used in aircraft skin, military weapons, paper pressing rollers of the copiers, aluminum curtain wall systems for high-rise buildings, and aluminum doors/windows.
Positive electrode treatment can smoothen the aluminum material surfaces and extend the product’s life cycle.
Laser engraving technique is used to put logos and related marks and information on the products for the sake of user’s convenience.
Assembly
A nozzle is assembled with 50 components or so.
Testing
Related testing is conducted in accordance with International requirements, which includes 100% pre-shipment testing, pressure-resistance testing, and water flow testing.
Packaging One box contains only one nozzle to effectively prevent shipment damage.
