Commercially pure or low-alloy nickel may contain very small amounts of alloying elements to absolutely none. By contrast nickel alloys contain significant amounts of added elements. Nickel and nickel alloys are both non-ferrous metals that are useful in a range of applications, most of which involve corrosion resistance and/or heat resistance.
Nickel Alloy alternatives to trademark [brand" names.
Alloy C276 alternative to Hastelloy C-276 and Hastelloy C Nickel Alloy Heat Exchanger Tube Nickel Alloy Heat Exchanger Tube,Nickel Alloy Seamless Tube,Nickel Alloy Asme Tube YUHONG GROUP CO.,LIMITED , https://www.jessro-pipefittings.com
1. Preparation of the concrete spraying machine before starting up A. Check whether the line contact of the sprayed electrical control system is firm and whether there is any leakage.
B. Observe the oil mark and check whether the lubricant in the reducer is sufficient.
C. Check whether the joint fastening of the spraying machine is correct and reliable.
D, short-term operation of the spray machine, in order to master the rotation (note that the direction of operation is consistent with the direction of the arrow, but do not idle for a long time).
E. Check the clamping force exerted on the rubber plate, and use a random hand to move the nut on the rod of the clamping mechanism and compress it. Then use a wrench to tighten 2 or 3 turns until the rubber plate does not leak. How the rubber plate is clamped can be checked by one of the following two methods:
(1) Folding the feeding pipe, opening the valve of the gas circuit, when the pressure is about 0.3MPa, no pressure gas leaks out at the rubber plate;
(2) Rotate the machine about 1/2 turn when shutting down. The rotor stopped immediately and turned slightly back (due to the elasticity of the compression rubber).
2, concrete shotcrete sprayed concrete operation preparation process is completed, at this time the machine operator should first open the main valve, and then adjust the lower trachea (pressure gas to the cyclone) to about 0.05-0.1MPa air pressure (depending on Delivery distance). The sprayer then opens the nozzle water valve to pre-wet the surface of the rock mass. At this point, you can start the sprayer and begin spraying concrete. The working pressure during spraying is about 0.2-0.4 MPa. According to the water-cement ratio of the mixing material and the distance of the conveying distance, the pressure of the gas flowing to the cyclone is adjusted until the jetting worker considers the jet velocity to be appropriate. After the adjustment of the lower tracheal valve is confirmed, the upper tracheal valve is opened again until no more material is released at the remainder of the machine.
3, the concrete spraying machine stops spraying operation step A, stop, blow out the remaining material in the transmission line.
B. When the pipe is clean and no material is sprayed from the sprinkler, close the water valve at the sprinkler.
C. Finally close the total tracheal valve.
The mixing material can be retained in the hopper when the spraying operation is interrupted for a short period of time; for a long time or after the sneezing operation is completed, the feeding must be stopped first to allow the spraying machine to continue to run until the residual material in the hopper and the rotor cavity is exhausted. To add a little wet gravel to clean the hopper and rotor material residue spray clean.
Nickel And Nickel Alloys
Nickel is a versatile, highly corrosion resistant element that will alloy with most metals. Due to its corrosion resistance, nickel is used to maintain product purity in the processing of foods and synthetic fibers. It is highly resistant to various reducing chemicals and is unexcelled in resistance to caustic alkalies. In addition, nickel has good thermal, electrical and magnetostrictive properties. Relatively high thermal conductivity of this metal has lead to its frequent use for heat exchangers
Alloy B-2 alternative to Hastelloy B-2
Alloy C-22 alternative to Hastelloy C-22
Alloy X alternative to Hastelloy X and Inconel HX
Alloy 20 alternative to Carpenter 20 and Incoloy 20
Alloy718 alternative to Inconel 718
Alloy 800 alternative to Incoloy 800
Alloy 800H/HT alternative to Incoloy 800H/HT
Alloy 400 alternative to Monel 400
Alloy K-500 alternative to Monel K-500
Alloy 625 alternative to Inconel 625
Alloy 600 alternative to Inconel 600
Alloy 601 alternative to Inconel 601
How to use dry concrete spraying machine? What is the method of operation? The Henan Yanli Shotcreting Machinery Factory introduced in detail the use and operation methods of the dry concrete shotcreting machine and hoped to help the operation of the concrete shotcreting machine. The concrete spraying machine operator must read the instruction manual carefully and be trained to be familiar with the structure of the sprayer before starting the operation.