Untitled: Complete Technical Guide

The Welding Handbook, Eighth Edition, Volume 2: Welding Processes is the American Welding Society’s standard reference of the joining of the metals: the volume edited by R. L. O’Brien, with the contribution of Leonard P. Connor and the welding engineers of the AWS: this document is the complete PDF of the welding processes reference with the procedures, the equipment, the metallurgy and the qualification of the welds: an honest note for the catalog: the entry of the package lists the file with the title “Untitled” because the original metadata was truncated in the library scan; the actual content of the file is this AWS Welding Handbook volume, and this article describes that content honestly.

The Complete Cement Technical Package (931 files including the books, the Excel tools, the courses and the presentations: $249.99 one-time: instant download via the PayPal payment) includes this Welding Handbook volume PDF with its chapters on the arc welding processes, the gas welding, the resistance welding, the brazing and soldering, the cutting and the weld quality: the maintenance engineer of the cement plant, the workshop supervisor and the fabrication engineer read the reference of the weld: this article walks the handbook: the place of the welding in the cement works first, the processes second, the metallurgy third, and the quality and the qualification last: the reader finishes with the map of the welding technology that keeps the cement plant together.

Why the welding handbook belongs to the cement technical library: the cement plant is a metal structure under continuous attack: the kiln shell red with the heat, the chutes and the hoppers of the abrasive material, the mill liners, the crusher jaws, the conveyors, the bag filter bodies, the ducts and the structural steel: every day of the plant someone welds: the repair welds of the kiln shells, the hardfacing of the wear plates, the fabrication of the chutes, the maintenance of the hoppers and the welding of the new structures: the engineer who understands the welding processes decides correctly: the electric arc, the stick, the MIG, the TIG, the stud, the submerged arc, the hardfacing deposits: this book is the professional instruction of those decisions.

1. The Role of Welding in the Cement Plant Maintenance

The first chapter of use: where the welding meets the cement:

• The kiln shell repairs: the shell cracks from the heat and the distortion, the repair welds on the carbon steel shell, the preheating according to the thickness and the grade, the welding consumables of the low hydrogen type: the shell repair procedures of the cement plants follow the quality that this handbook teaches;
• The wear protection: the hardfacing of the crusher hammers, the mill liners and the separator cones, the build-up of the worn surfaces with the hard surfacing alloys: the hardfacing electrodes and the wires of the handbook: the abrasive wear of the cement circuits is the largest consumer of the welding wire on the site;
• The fabrication and the repair: the chutes and the silo outlets, the conveying structures, the bucket elevator parts, the dust collector bodies and the air ducts: the fabrication welds and the repair field welds: the position, the access, the weather: the plant welding is the welding under the field conditions;
• The miscellany of the plant: the railing and the ladders, the silo platforms, the gantry structures, the pipe supports, the trolley fixtures: the hundreds of the fittings and the supports that the workshop makes and repairs every week with the arc and the gas;
• The quality demand: the welds of the pressure parts (the compressors, the receivers) and the supporting structures: the standards of the quality, the inspectors, the qualifications: the handbook’s chapters of the quality and the testing apply directly:

The plant that treats its welding as a profession, not as an accessory, extends the life of its equipment: the chute that is hardfaced properly lasts the season, the kiln shell that is welded on the correct procedure keeps its geometry, and the craftsman who knows the difference between the good rod and the poor rod works at the highest output: the handbook is the professional teaching of that knowledge.

2. The Arc Welding Processes: The Stick, the MIG and the TIG

The central chapters of the book: the arc processes of the workshop and the field:

• The shielded metal arc welding (SMAW, the “stick”): the most versatile of the manual processes, the electrode coated with the flux, the applications for the repair and the structures: the electrodes of the E70 family of the handbook: the selection of the electrode by the metal grade, the current and the polarity: the field procedure of the low hydrogen types and their dry storage;
• The gas metal arc welding (GMAW, the MIG): the continuous wire and the shielding gas of the CO2/Argon: the semi-automatic welding of the workshop: the positions, the settings of the voltage and the wire feed speed: the productivity of the fabrication: the filler wires and the transfer modes (the short circuit, the globular, the spray) of the handbook;
• The flux cored arc welding (FCAW): the self-shielded and the gas-shielded tubes: the high strength of the cement structures, the wind resistance of the field: the hardfacing cored wires of the abrasion, the wear overlays of the cement equipment:
• The gas tungsten arc welding (GTAW, the TIG): the highest quality of the non-ferrous and the stainless steels: the precise control of the heat and the weld pool: the root passes of the tube: the tungsten electrodes and the filler selection: the applications of the control and the stainless of a plant instrumentation;

The arc chapter sets the foundation: the heat input, the fusion, the filler metal, the weld pool and the solidification: the reader knows the process choices of the plant: the stick for the field, the MIG for the fabrication, the TIG for the stainless, the cored for the hardfacing: the right process for the job: the central art of the welding engineering.

Beyond the single processes, the handbook compares the performance of the arc family in the tables: the penetration profiles, the distortion, the deposition rates and the typical defects of each method are tabulated side by side: the decision of the repair engineer in the field follows the practical route: the repair of the kiln shell with the stick or the cored, the fabrication of the new chute with the MIG or the FCAW, the stainless guards with the TIG: the process selection is the first decision of the welding supervisor, and the handbook carries the data for the decision: the cost per metre of the weld, the operator factor and the consumable prices are the economy chapter of the full picture.

3. The Submerged Arc and the Specialized Processes

The high-productivity and the specialized processes of the volume:

• The submerged arc welding (SAW): the wire and the granular flux, the arc buried under the flux bed: the long straight joints of the plates and the pipes, the cladding and the hardfacing of the rounded parts: the high deposition rates of the thick sections: the welding and the quality of the SAW joint:
• The stud welding: the drawn arc and the capacitor discharge stud processes: the anchoring of the studs to the steel: the shell studs of the composite floors, the anchoring of the insulation and the refractory: the equipment and the quality checks of the installed studs:
• The electrogas and the electroslag welding: the vertical joints of the thick plates in the single pass: the tanks, the silos and the special vessels: the automation of the vertical position: the heat input control of the electroslag:
• The plasma and the laser: the plasma arc welding of the special metals, the plasma cutting of the plate and the profiles, the laser processes of the modern fabrication: the advanced chapter of the handbook: the future processes of the manuals:

The specialized processes close the arc set: the plant engineer selects from the same reference for the workshop of the cement plant: the SAW for the longitudinal welds of the silos, the plasma for the profiles, the stud for the anchoring: the handbook gives the ranges of the thickness, the power and the quality of each process: the equipment selection of the workshops in the numbers.

4. The Gas Welding, the Cutting and the Resistance Welding

The non-arc chapters of the heating and the resistance:

• The oxyfuel gas welding and cutting: the oxy-acetylene welding of the thin sheets and the repair of the castings, the preheating of the thick sections, the cutting of the steel plate with the neutral flame and the gouging with the carbon arc: the flame cutting of the workshop, the demolition of the old structures, the rigging: the safety of the gases, the cylinders and the flashback arrestors;
• The resistance welding: the spot, the seam and the projection: the current, the pressure, the cycle: the thin-limb applications: the sheets of the fasteners, the mesh, the ribs: the resistance of the fast processes of the large series: the quality of the spot conservers;
• The forge and the thermit welding: the historical processes of the heavy sections: the forge welding of the old practice, the thermit of the aluminium and the oxide for the rails and the heavy repairs: the use of the thermit for the anchor blocks and the massive repairs of the site:
• The cutting and the gouging: the carbon arc gouging of the workshops, the torch cutting of the steel, the plasma cutting: the preparation of the grooves of the welding V, the removal of the defective welds, the cutting of the segments for the repairs: the essentials of the repair profession:

The gas and the cutting chapters are the service chapters of the plant: the weld repair and the cutting of the scrap are the daily work of the cement maintenance, and the handbook carries the procedures in the detail: the flame adjustment, the tip sizes, the oxygen pressure tables, the safety of the acetylene cylinders: the instrumentation of the plant workshop from the book.

The oxy-fuel and the plasma gas supply: the manifold of the workshop, the pressures of the oxygen and the acetylene at the regulator, the hose colours and the flashback arrestors: the handbook explains the cutting table practice: the plate marking, the kerf allowances, the bevel cutting for the butt joints and the nesting of the parts to save the plate: the flame cutting serves the demolition of the old vessels and the preparation of the replaced sections of the kiln shells: the gas shop of the cement plant is a complete discipline of its own, and the volume covers the equipment, the settings and the safety in the dedicated chapters.

5. The Brazing, the Soldering and the Thermal Processes

The temperature processes of the joining:

• The brazing: the joining of the metals with the filler melting above the 450 Celsius without the fusion of the base: the capillary action of the filler: the applications of the copper and the brass, the hydraulic lines and the refrigeration: the braze against the weld: the joint design of the braze, the clearances and the strength:
• The soldering: the low temperature joiners (the tin-lead, the lead-free: the electronics of the panels, the fittings of the copper piping, the fuses and the instrument connections): the soft solderability of the assemblies, the fluxes and the residues, the health of the lead-free:
• The thermal spraying: the coating application for the wear resistance: the flame spray, the arc spray, the plasma spray: the coatings of the rollers and the wear parts of the cement: the thermal spray against the weld hardfacing: the spray shop of the plant:
• The surfacing and the hardfacing: the build-up of the plates, the cladding of the flow, the hardfacing of the wear: the carbide, the nickel and the chromium alloys: the welding of the overlays on the crusher and the mill interiors: the composition and the hardness of the overlays:

The brazing and the thermal chapters give the handbook its breadth: not all the connections of the plant are welds: the tubes of the instrumentation with the brazed, the electrical connections with the solder, the roller surfaces with the spray, and the hardfacing with the last chapter: the reader masters the chapter and chooses the joining process with the explanation: the process selection chart of the handbook: the material and the service.

The comparison of the strength: the brazed joint against the welded joint of the same thickness: the braze codes of the silver and the copper alloys, the capillary gap of the design, the overlap length and the shear strength of the joint: the soldered connections of the instrumentation and the electronics of the control panels: the thermal spray of the pump shafts and the fan shafts of the plant, the build-up of the worn diameters followed by the machining: the handbook gives the temperature ranges of the processes and the selection logic: the thermal joining is the craft of the instrument shop of the cement plant, frequently independent of the arc shop.

6. The Welding Metallurgy and the Materials

The science chapter of the book: the metallurgy of the welds:

• The steel of the cement plant: the carbon steel of the kiln shells, the cast iron of the machine bodies, the stainless of the instruments: the weldability of the ferrous materials: the carbon equivalent and the preheat of the hard formations: the crack sensitivity and the cold cracking:
• The heat affected zone (HAZ): the effect of the heat on the base metal: the grain growth, the hardening, the softening of the wirings: the metallurgy of the HAZ, the hardness diagrams and the preheat, the post weld heat treatment of the thick sections:
• The alloyed and the stainless steels: the families of the stainless (the austenitic, the ferritic, the martensitic and the duplex), the filler selection, the carbide precipitation of the 8-14% ranges, the repairs of the stainless components of the plant:
• The non-ferrous welding: the aluminum and its oxide, the TIG welding of the copper, the nickel: the welds of the non-ferrous parts of the plant: the instruction of the material and the procedure: the welding of the chromium alloys the hardness:

The metallurgy chapter converts the welder into the engineer: the welds of the kiln shell, of the mortar elbows and of the stainless armor all follow the same metal logic: the heat input, the hydrogen, the restraint and the low carbon: the metallurgical understanding of the handbook prevents the cracks that the workshop discovers only after the hours: the most valuable chapter of the silent plant.

The control of the three enemies of the weld: the hydrogen, the heat input and the restraint: the low hydrogen electrodes stored in the rod ovens and issued dry, the preheating of the thick and the hardening-prone grades, the interpass temperatures and the controlled cooling of the heavy joints: the carbon equivalent of the steel grades tells the preheat needed before the first bead: the handbook details the calculations and the tables for the grades B, the CMn and the HSLA plates of the plant fabrications: the welding is metallurgy executed with the torch, and the chapter gives the scientific control of the executed weld.

7. The Weld Quality: The Defects, the Inspection and the Codes

The quality chapters of the handbook:

• The weld defects: the porosity, the slag, the lack of fusion, the cracks, the undercut: the photography of the defects and their causes: the acceptance limits of the codes:
• The visual inspection: the first measurement of the weld: the geometry of the weld, the surface of the porosity: the checklist of the inspector: the workshop practice: the visual is the ninety percent of the inspection of the plant:
• The nondestructive testing (NDT): the liquid penetrant, the magnetic particle, the ultrasound, the radiography: the methods of the test of the welds: the qualification of the methods: the application costs and the NDT of the plant structures:
• The code requirements and the standards: the ASME Section IX, the AWS D1.1 of the structural steel, the ISO 3834: the WPS (the welding procedure specifications) and the WPQ (the welder performance qualifications): the certification of the welding and the welders:

The quality chapters are the compliance chapters: the plant that tenders the tanks, the structures and the repair commissions needs the qualified welders and the procedures: the handbook teaches the qualification systems and the inspection, and the combination of the quality with the traceability: the welder and the engineer produce the verifiable evidence: the welds of the plant structural steel and the pressure, the codes of the handbook the codes of the industry.

The documentation of the quality: the welding procedure specification records the parameters of the accepted weld, the procedure qualification record of the applied tests and the welder certificates of the staff: the plant that maintains the registers of the consumed electrodes by the heat number and the welded joints by the inspector accept the audits of the insurers and the clients: the handbook shows the paper trail of the modern welding quality: the non-conformance reports, the repair records and the re-inspections: the quality of the welds is achieved in the workshop but proven on the paper, and the volume is the complete manual of the proof.

8. The Workshop Practice: The Welding Shop of the Plant

The workshop practice chapters of the handbook:

• The welding shop of the plant: the layout: the welding booths, the fume extraction, the safety installations: the equipment of the welders: the inverter machines, the MIG units, the TIG units, the rectifiers: the preventive maintenance of the machines and the calibration:
• The safety of the welding: the fire watch, the personal (the hood, the gloves, the FR coats, the eye protection): the fume and the ventilation: the electric shock and the insulation: the confined space entries: the welding safety of the plant culture:
• The consumables management: the electrode storage and the ovens for the low hydrogen, the wire and the flux: the rod rooms of the plants: the purchase, the moisture control and the issue control of the consumables: the traceability of the quality:
• The training and the qualification of the welders: the apprenticeship programs, the recertification cycles, the welder test stations: the qualifications by the process and the position: the limitations of the certificates: the human factor in the welds:

The workshop chapter: the operations of the plant: the welding is not a machine shed, it is the manufacturing function of the plant: the fume-free, the fire-safe, the documented, the human-centered: the chapter of the handbook supports the maintenance departments and the fabrication of the cement plant with the complete professional content.

9. The Welding Applications in the Cement Plant

The application chapter: the welding of the specific cement equipment:

• The kiln shell and the gear repairs: the welding of the carbon steel shells, the burner pipes, the repair of the shell buckles: the joint preparation of the thick plates, the preheating and the post weld heat: the procedure for the kiln shell of the handbook: the tension and the alignment control:
• The hardfacing of the crushers and the mills: the hardfacing of the crusher hammers, the rollers of the mill, the separator parts, the welded mantles: the hardfacing electrodes and the sharp edges: the build-up procedures of the grinding rollers: the OEM together with the hardfacing:
• The wear plates and the chutes: the wear plates of the linings (the wear-resistant plates), the elbows of the conveying: the installation of the abrasion-resistant tiles and the overlays: the materials of the wear and the welding techniques: the economic life of the wear plates:
• The structural steel and the supports: the welding of the steel structure: the columns, the silos, the walkways and the stairs: the field welding of the new constructions: the inspection of the structures and the third-party control: the full code of the department:

The applications chapter makes the link between the book and the plant: the engineer of the cement field: the chapter of the handbook: the welds of the cement: the chute, the mill, the kiln: the reading of the book: from the general procedures to the specific joints of the plant: the right welding knowledge of the plant.

The maintenance planning of the welds: the shutdown lists on the weld repairs, the inspection of the joints during the annual stops, the hardfacing programmes of the spare parts prepared in advance: the handbook helps the planner with the procedures for each family of the parts: the kiln shell inspections at the welds of the shell and the tyres, the wear maps of the chutes measured and the overlay schedules of the mill liners: the welding is not only the response to the failure, it is the scheduled protective discipline of the plant: the volume of the AWS furnishes the materials for both the reactive and the planned maintenance.

10. The Frequently Asked Questions

The package catalog shows this file as “Untitled”: what is it exactly?

An honest answer: the catalog entry of the package failed to record the title of the file (the PDF metadata was truncated to “Untitled”): the content of the file, verified on the pages themselves, is the Welding Handbook of the AWS and this article is the description of its true contents: the cement technical library includes it as the welding reference useful to the plant maintenance and the fabrication, next to the mechanical and the process books.

Is the welding reference for the cement engineer or for the welder?

Both: the welder reads the processes and the electrodes, the engineers the metallurgy and the codes, the maintenance manager uses the quality and the NDT chapters: the handbook of the complete welding profession: the maintenance department of the cement plant keeps it open.

Does the handbook cover the certification and the codes?

Yes: the chapters of the codes (the ASME, the AWS D1.1, the ISO), the qualification of the procedures and the welders, the NDT requirements and the acceptance criteria: the plant that must weld the kiln shells and the pressure parts reads the codes as specified: the welding inspection of the project personnel.

The hardfacing of the mill parts: which chapters of the handbook?

The hardfacing is in the overlay chapters: the hardfacing family of the alloys (the chromium carbides, the austenitic manganese), the build-up and the overlay technology: the cement engineer: the welding procedures of the grinding rolls and the crusher strikes: the common reconstruction cost of the wear parts: the chapter.

The welding at the high temperature of the cement kiln?

The metallurgy of the carbon steel at the operating temperatures and the welding preheating: the silicon steels of the kiln shells, the procedures of the warm repairs: the welding procedure of the kiln repairs: the handbook procedures must be combined with the strict conditions and the release: the safety and the quality of the kiln shell.

11. Conclusion

Welding Handbook Volume 2 of the AWS: the welding processes, the metallurgy, the quality: the library volume: the essential of the maintenance of the cement plant: the repairs, the hardfacing, the structures: the library shelves of the package: this is the value of the book: the comprehensive industrial reference of the welding: the plant craftsmen and the engineers: the professional.

This Welding Handbook volume belongs to the Complete Cement Technical Package (931 files including the books, the Excel tools, the courses and the presentations, $249.99 one-time, at the PayPal at https://www.paypal.com/ncp/payment/239VDEZDDLWHQ): the engineering library of the cement industry: with the maintenance handbooks, the tools and the other processes of the plant: the complete technical stack: ready: the click: 931 files: the knowledge of the cement industry: one-time: the download: click “Buy”: cementequipment.org: the engineering reference of the plant complete.

This file is part of the Complete Cement Technical Package (931 files) available from cementequipment.org. Respective rights holders; library copy for the licensed single user.