Blanking is the first step for making boiler;it is the critical process that guarantees the quality of boiler.We not only ensure its accuracy for the size of blanking,but also ensure its correctness of the material.The material for blanking must be accepted according to the relevant provisions of the state and enterprise.Before blanking, we still should have a sample ID transplantation and physical and chemical test.This process could track to all the used plates.
Edge process is finished by edge milling machine, the principal traits:1.The maximal length is 12m.2.It could process 0-45 degrees to the plates and ensure all the needs for various forms of welding grooves.3.The error of process quality is less than 0.3mm/m for the straightness, total error of straightness is less than 1.5mm and the surface finish reaches Ra6.3.
The step of cutting-edge is mainly aim to outsourcing of tube plates, cutting of tapered furnace and process for groove and skiving. The most working diameter is 1400mm, it could ensure plates’ smooth, exact of size of groove and satisfy all the parts with under pressure needs.
This step is composing all the relative elements together to a intact part.The boiler furnace is made of tapered furnace,corrugated furnace and reversal chamber furnace.Boiler furnace is the most important part of the boiler.In its structure design, we accept plain furnace for the vertical oil(gas)-fired boilers, while for horizontal boilers,we make it with corrugated furnace,it could not only sovle the problem of thermal expansion,but also improve its heat transfer efficiency and reduce the size of boiler.
The quality of test welding will effect the boilers’ security of operation directly. In order to solve this problem, we set up a step of nondestructive inspection with directional welding and circumferential X-Ray technically. The reliability and high security could ensure its correctness of evaluation and inspection for welding quality.
Hydraulic Pressure Test is an essential work stage to inspect the intensity and tightness of pressure parts and it’s a committed step to inspect the operational security of the whole boiler. This process must accept the fixed-point test from Bureau of Quality and Technical Supervision. And at the same time, our first-pass rate of approval of hydraulic pressure test is 100% and we could ensure the customers’ safety who use our boilers.
Packaging is a step which puts the insulation materials on the boiler shell, and packages the imported color plates. We design the heat preservation structure for boilers meticulously, and this structure adopts? double glass cotton that can increase the property of heat preservation and make the shell temperature far below the national standard. Thereby, decrease the radiation loss of the boiler efficiently and Ensure high thermal efficiency.
This step is a simulation property test before deliver the goods. It’s the final step which we inspect our products, and it belongs tous exclusively . This step could guarantee that all the operating parameters conform to the design requirement, and make the boilers more secure and reliable, furthermore, provide dependable parameters for boilers improvement.
Our company mainly adopts the imported Digital Flame (plasma) Cutting machine.It could precut with 100% fully automatic digital cutting to the plates.The principal advantages as follows:1.Automatic computer programming could cut all geometrical sheet metal.2.high cutting speed 3.High work efficiency 4.High size precision 5.High plates utilization.
It is mainly completed by three drawing universal polishing-edge industry.Main advantages:1.The maximal thickness,width and diameter of the plates rolling shell are 30mm,2500mm and 2600mm separately.2.Large processing scope, and it could process conical shell as well.3.Automatic programming and high work efficiency.4.No necessary to pre-sprining,and it need a highly consistency for the quality of pre-sprining and molding,having a good guarantee to fit up in the later stage.
When we process all kinds of tube plates and pipe hole,cutting hole with digital controlled cutter is the first step, and then, we use the way of radial drill reaming to improve the quality of the pipe hole.The advantages as follows:1.No need to chalk line by labor,improving efficiency three times.2.Low quantity of deformation and low stress.3.High accuracy of cutting position and dimensions.
Our company has a test welding to theuses union melt welding; argon arc welding and carbon dioxide arc welding and circular seam, longitudinal joint and fillet weld among the no pressure parts.Main characteristics of union melt welding:1.high welding speed, high working efficiency.2.Good quality of weld bead and beautiful molding.3.Stable welding quality.4.Save electricity and welding material.
This step is mainly for material retest and mechanical properties of raw materials and product welding specimens.It could test for stretching and bending of the plate to guarantee all the welding material properties could meet national standards.
Smokebox is a vital part for a horizontal boiler, the material we choose have a high quality of insulation and refractory,adopting double aluminum foil to keep warm,this can improve its insulation effect,meanwhile,we use a unique double-sealed structure on both front and rear smokeboxes,this can deal with leakage problem,which happens when horizontal internal-combustion boiler runs,and reduce the losses of gas leakage.Our boilers adopt double-door structure.Advantage:reliable performance,excellent sealing,assurance of boiler’s safety and reliable operation.
The installation of pipeline and electrical is a step which forms the entire boiler.We take the lead in combining PLC(Programmable logic controller) with ?touch screen, and applying it to boiler control.As do this ,we can realize full-automatic control,networking group control,computer group control and remote control etc.First-class hardware and software technology which is practical and secure ensure automatic and high-quality production.
We’ll pack the outer packing when all the steps above meet the standard. Outer packing includes plastic dainty and package to ensure the boilers’ safety and appearance quality during transportation.