Product DescriptionProduct descriptionPROCESS STEPSLPG
Cylinder Production is composed of several sheet metal forming,
surface treatment and testing processes. The process starts with
blanking, deep drawing and piercing, trimming and joggling. Next
are the welding operations for valve boss, valve guard ring, foot
ring and the two halves. The finished cylinder is then heat
treated, tested, shot blasted, painted and then the valve is
attached and final tested.The main process steps are summarized
below2.1 LPG Cylinder Body Forming Line2.2 LPG Cylinder Trimming &
Beading2.3 LPG Cylinder Guard Ring Production Line2.4 LPG Cylinder
Bottom Ring Production Line2.5 LPG Cylinder Welding Line2.6 LPG
Cylinder Quality Controls2.7 LPG Cylinder Heat Treatment Furnace2.8
LPG Cylinder Shot Blasting2.9 LPG Cylinder Metallization Line2.10
LPG Cylinder Painting Line2.11 LPG Cylinder Testing LineDetailed
PhotosLPG Cylinder Blanking & Body Forming LineIn the core of the
forming line there stands a versatile double action LTM hydraulic
deep drawing press that forms the cylinder halves out of round
blanks that are blanked by a single action double blanking LTM
press or directly from the coil material by help of LTM design
combined deep drawing, piercing and blanking die set. The edges of
the upper and lower halves are further processed by LTM trimming
and joggling machines to the perfection stemming from the sheet
metal forming expertise of LMT to make it read for the body seam
welding after degreasing.LPG Cylinder Halves Forming LineWuxi
Longterm Machinery Technologies Co., Ltd. is the professional
LPG gas cylinder machine manufacturer with more than 35 years'
experience in both design and manufacturing for LPG
cylinder new line, old cylinder reconditioning line. With good
reputation and qualified machines, we have supplied several high
standard LPG cylinder production lines to the world
markets, like T**Cylinder, Si***a Cylinders,F***tech Steel
Corporation, K***ol cylinder,J** Gas Inc. (USA) and Chinese
95% Market....We keep improving our machine technology all the
time, our machines helped a lof of gas cylinder factories improve
their production and gas cylinder quality with bigger capacity and
much lower costing. For your better understanding, I am listing as
follows:1. Cylinder body auto making line, from decoiler to deep
drawing, jogging and circle welding.A: Fully automatic + Robots
Auto feedingB: 1000pcs/ 2000pcs Capacity as your needsC:Only need
max 3-5 people (only for change welding wires/
nozzels) D:Video/ laser tracking +Patent Panasonic
Welder E: Workshop Land Saving, Cutting/ jogging/polishing in
one machineLPG Cylinder Body Forming Welding LineThe submerged arc
welding technique is applied on the welding of body halves on the
seam welding machine and generally on the wielding of the valve
boss to the upper cylinder halve. The welding automats with
reliable welding power packs and control units are utilized to
achieve the uncompromising weld quality with degree of automation
needed for the required production capacity per customer. The
MIG/MAG welding technique is applied for the welding of foot rings
and valve guard rings with the body halves. Welding is the
most critical part of the production line, which engages the best
cylinder performance and assures the good quality. Our welding
machinery is the best cylinder & pressure vessel welding equipment
in China and also TOP Ranked worldwide. Full-auto welding machine
includes socket welding, handle/collar welding, base ring welding,
circumference welding, and all machines work automatically, the
cylinder halves are conveyed by mechancial arm and chain, this
system really saves much labor cost and improve the working
efficiency apparently.In order to relive all the stresses caused by
forming and welding operations, the cylinders are passed through a
heat treatment furnace where they are exposed to 930 º C degrees of
temperature for certain time before getting cooled gradually.LPG
Cylinder Hydrostatic Testing Line & Other Supplementary MachinesThe
LPG cylinders surfaces are shot blasted by the shot blasting
machine in order to clean up the scales caused by the heat
treatment operation to make the surface ready for the painting and
or zinc spraying for those customers who requires zinc coating
before painting. The double layer over cured painting of the
cylinders is achieved automatically by the robotic paint
application system in the painting line as the cylinders conveyed
on overhead conveyor system through the primary and final coat
painting cabinets separated by flash off tunnels before they get
cured in the canopy type modern paint curing oven.After the tare
weighing and marking of the cylinders, the valves are attached by
automatic torque controlled screwing machines and tested against
any leakage at the valve region by the pneumatic leakage testing
machine of the finishing line.One of the batch type quality control
equipment called by the international standa
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