Papermaking PAPERMACHINE – DRYING Introduction
Yankee Dryers . This is essentially one large diameter (8m) steam-heated cylinder with high velocity hoods having jets of hot air blowing on the paper surface. These are used for tissue machines. Being very light weight, tissue can be easily …
Tissue World Digital Days
Biography: Manfred Jäger, born in Ravensburg / South Germany, founded JAEGER in 1995 after 12 years with ESCHER WYSS (later VOITH). With more than 30 years' experience he is specialized in on-site service for Yankee / MG cylinders: grinding, metallization and mechanical service.
MINUTES of the YANKEE DRYER SAFETY …
TAPPI Yankee Dryer Safety Subcommittee May 4, 2004 at the Georgia World Congress Center Atlanta, GA USA Page 1 of 3 ... Ron Crawford – Voith Scott Crysel – FM Global Marcos Scheil Gonçalves – Voith ... from dryer grinding.
Forward Engineering for improved Yankee safety and ...
It can be described as shown in the following equation, with the most important factor in this equation being the variable E: Dryness at the hood inlet, meaning the percentage of solids as the sheet enters the hood. R w = R w hood + R w Yankee Dryer = total evaporation [g/s] determined by the drying balance between hood and Yankee, where
Yankee dryer operation and maintenance
Because of its importance to the tissue-making operation, mills should provide regular maintenance services to the Yankee dryer to maintain high runnability and ensure top-notch quality. On the Yankee dryer, the paper goes from approximately 40% dryness to just over 95% dryness, and is then doctored off into the sheet transfer area.
Used Dryers Cans And Sections for sale. Voith equipment ...
142" DIA X 85" FACE VOITH 114 PSI YANKEE DRYER. Manufacturer: Voith; 103819 One (1) used Voith 3600mm dia. x 2250mm face (142" x 85") Yankee dryer rated for 114 PSI (7.8 bar). Working width is 2050mm (108"). With bearings, cutting, creping, and cleaning.
Used Andritz Voith for sale. Voith equipment & more | Machinio
4350mm Voith Fourdrinier Tissue/MG Paper Machine 600m/min. Manufacturer: Voith The machine is fourdrinier type, single felt with suction and blind drilled press, plain Yankee dryer and stem heated hood, producing tissue and MG paper from 17 to 50 gsm at an operating speed of 600 m/min while...
Cogeneration for increased energy efficiency
A cogeneration system uses the exhaust from a gas turbine in the drying process, producing a higher global yield of steam, while simultaneously decreasing energy needs. The exhaust first goes through a plenum, which acts as a settling chamber to stabilize the turbine pulsations if necessary. The exhaust is then blown directly into the Yankee hood.
Chrome-free Yankee metallizing reduces potential safety ...
Thermal spraying is now seen as the ultimate treatment to protect a new steel Yankee dryer with a hard and durable surface. Also, older cast iron cylinders are today often metallized to improve performance and lifetime, particularly if there is insufficient remaining cylinder shell thickness and/or if further grinding may affect its production ...
Size, costs and energy consumption continue to dominate ...
In these conditions, especially for fast speed machines, the passage of the paper sheet from Yankee dryer to pope reeler is quite difficult. We have developed a system to stabilise the paper and allow successful threading. Furthermore, our head boxes have been designed to guarantee high quality paper even when low basis weight paper is produced.
Used Yankee Dryers for sale. Voith equipment & more | Machinio
142" DIA X 85" FACE VOITH 114 PSI YANKEE DRYER. Manufacturer: Voith. 103819 One (1) used Voith 3600mm dia. x 2250mm face (142" x 85") Yankee dryer rated for 114 PSI (7.8 bar). Working width is 2050mm (108"). With bearings, cutting, creping, and cleaning.
Tissue creping training - SlideShare
The Yankee coating prevents the creping and cleaning blades from coming into direct contact with the dryer surface, which will tend to damage the dryer. 2. The way the sheet is held against the dryer during creping is a major factor in how the sheet is creped.
Yankee surface restoration | Valmet
The Yankee surface is critical for tissue making and even small marks on the surface can cause severe damages of the paper web. Valmet is a leading supplier of advanced solutions to restore perfect Yankee surface, ensure optimum performance and extend dryer life. We provide solutions for removing chatter marks and refurnishing the Yankee shell ...
MINUTES of the YANKEE DRYER SAFETY …
TAPPI Yankee Dryer Safety Subcommittee October 27, 2003 at the Hyatt Regency Chicago, IL, USA Page 1 of 5 MINUTES ... Voith Thomas Davidson – Nexfor Technology Joel Farnum – Thielsch Engineering ... The defect was considered trivial and repaired by grinding. The second indication was 3 inches long in the flange face. It extended from under ...
Grinding of drying cylinders | PIKOASUR
Our grinding process allows precision work (+/- 0.1mm in diameter), while getting a good final surface (roughness <0.6 µm). In case of a porous iron, Pikoasur is able to repair these defects by plug in or spot repair. The grinding process is applicable on drying rolls, Vac rolls, Yankees, pope reel or suction cylinders, all on site.
News - Page 2 of 25: Toscotec
Toscotec to supply a TT SYD Steel Yankee Dryer to Mirae Paper. Toscotec will supply a third-generation design TT SYD Steel Yankee Dryer to the South Korean tissue manufacturer Mirae Paper . READ MORE . 17/06/2021 ... Toscotec is a …
Practical Roll Techniques - Grinding & Balancing
Consistent grinding and balancing of rolls is necessary for efficient operation and optimum paper quality. As an integral part of a modern roll maintenance program, roll grinding and balancing uses machinery with accurate inspection and measurement equipment. This paper provides practical tips on roll inspections, balancing, grinding and grooving.
Yankee dryer - Deutsch-Übersetzung – Linguee Wörterbuch
Re-grinding the Yankee dryer, to re-condition the [...] surface and re-establish the dryer crown, has become a routine maintenance operation carried out by specialists, usually at intervals between 12 and 36 months, depending on the operating conditions.
Forward Engineering for improved Yankee safety and ...
The Yankee is often called the "Heart of the Tissue Machine". This is true, as the Yankee controls the most important tissue paper characteristics, including softness, absorbency and strength. In addition, the Yankee has a very large impact on overall production costs, since over 60% of the total energy used is expended in the Yankee dryer ...
Paper Machine: Technical Theme - Tissue World Magazine
Looking to the future, Voith is finalising the development of a new technology which will be ready to announce in 2015." Hergen's Rodrigues dos Santos: "Our company has introduced a new line of Dryer Cylinders and Ribbed Yankee Dryers with double width and diameter up to 24ft, manufactured in welded steel.
144″ X 136″ Beloit Yankee Dryer V9327 in Mexico
Used Beloit Yankee dryer. 144″ (3.6m) diameter X 136″ (3.45m) face. New in 1958. Inspected by Voith paper Yankee technical service team in August 2002. Thickness when new 1.889″. Remaining thickness 1.530″. Ground and metallized in 1996. Rated pressure when new 125 psi. Recommended allowable pressure today 75 psi.
CN209443296U - The Yankee drying cylinder of dry fiber web ...
The utility model relates to a kind of Yankee drying cylinder (1) of dry fiber web (W), fiber web (W) Zhu Ruwei tissue paper webs.Yankee drying cylinder (1) includes cylindrical housings (2), with axially-extending portion and first axis end (4) and the second axial end portion (5).Shell also has inner surface (6) and outer surface (7).For each axial end portion (4,5) of cylindrical housings ...
Tissue World Milan - Yankee Operations and Energy ...
With the Yankee service, the focus is put on the overall added value of the Yankee: from the calculation to manufacturing, grinding and coating, operation, and optimization.
Sam Salzman - Machinist/Technician - Jaeger-Inc. | LinkedIn
Voith AG Aug 1981 - Feb 2005 23 years 7 months. Pulp/Paper Tissue Yankee Dryer Grinding Worldwide Education Oregon Institute of Technology Oregon Institute of Technology ...
grinding unit diagram
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US4320582A - Yankee Dryer and method of fabrication ...
A Yankee Dryer used in drying a web of paper or like materials in which all structural components are fabricated of weldments of steel plate and forgings and in which the outer shell is formed of a weldment of steel plates expanded to roundness and machined to final dimensions. All primary welds are subject to X-ray inspection. The dryer is of lighter weight than the usual cast iron …
Tissue | PaperFIRST
A.Celli announces the launch of the brand new A.Celli iDEAL® Evo-Lock® Yankee Dryer . James Wreath is the new Vice President of Sales – North America at Körber Business Area Tissue . ... Voith Group with robust development and significantly growing orders received in the first half of financial year 2020/21 .
Field Machining Services | In-Place Machining Company
Whether you have a small repair or a multi-unit project, In-Place Machining Company has the experience you need. We provide specialized field machining services to a wide range of renewable energy, aerospace, industrial, and military customers throughout the world.
Best Practices for Toscotec Steel Yankee Dryer Maintenance.
Maintenance managers and supervisors in tissue mills are required to work to budget and cut the costs of maintenance wherever possible. An efficient management of your TT SYD (Steel Yankee Dryer) helps reduce maintenance costs and avoiding the risk of emergency stops.. What to do to reduce the maintenance cost of your TT SYD:. 1.
Yankee Dryer Shell Thickness Measurement Techniques ...
When the yankee dryer is measured hot it is usually during a crown grind or a refurbishing of the papermaking surface. The yankee dryer is heated by saturated steam at a pressure less than the normal operating pressure. Typically, the grinding pressure is 100 psig to 110 psig (psi-gauge).
MINUTES of the YANKEE DRYER SAFETY COMMITTEE …
TAPPI Yankee Dryer Safety Committee April 26, 2006 Marriott Hotel Atlanta, GA USA Page 1 of 3 MINUTES ... Voith Bill Corboy – Yankee Consulting, Inc. Marcos Scheil Gonçalves – Voith Daryl Hoffman – FM Global ... Virtual Reference Grinding by Tend Johnson PDF file – Yankees for High Line Loads by Clive Butler ...
Troubleshooting Flooding of Paper Dryers
Troubleshooting Paper Dryer Flooding 15 Seal pot is located below one of the headers with poor connection lines. Differential pressure is calculated from two pressure readings (double calibration errors and larger range for errors). Pressure and DP …
Toscotec | Products - Tissue Machines: AHEAD Line
As an auxiliary system of the Steel Yankee Dryer, Toscotec's Steam and Condensate System is optimized to operate in association with TT SYD to allow it to achieve its maximum drying capacity. Steel Yankee Dryer. ... Toscotec is a Voith …
Yankee Dryer Design and Construction - YouTube
Visit https://goo.gl/XALViG to view the full video and purchase access to our other Tissue courses.The Yankee dryer is a large, steam-heated, pressure vessel...
Creping... the Heart of Tissue - Papnews
The geometrical set-up of the creping blade against the Yankee Dryer (YD) is simple but very important when it comes to the structure of the tissue paper it will produce. Figure 1 shows the various angles formed between the creping blade and the YD. The parameter defining the application is the Creping Pocket Angle: it is defined as the angle ...
yankee grinding machine vendor
Chatter marks on Yankee Surface. MTR Martco LLC provides expert precision machining services to, boring, grinding,, avoid the cost of multiple suppliers and keep your vendor base at .Yankee Equipment Systems provides the highest quality commercial, industrial and laundromat specific equipment sales, service and repairFormation of chatter marks on Yankee surface, …
Steel Yankee dryer: Advantages, development and rapid ...
Toscotec pioneered steel Yankee dryer, based on 40 years' experience Toscotec, the paper machine producer in Lucca, Italy, is widely seen as the pioneer and driving force for development of the steel Yankee dryer (SYD) concept. Already in the 1960s, the company was producing steel drying cylinders for standard paper machines.
Tissue Drying Strategies – Factors to Consider to Achieve ...
Figure 1: Yankee and Hood combination. For Yankee dryer technology, there are two main alternatives: The traditional cast-iron Yankee dryer which has been used for well over 100 years, and the new Steel Yankee dryer technology that has been recently introduced and rapidly adopted during the past 15 years.
Voith
The Voith Group is a global technology company. With its wide range of plants, products, services and digital applications, Voith sets standards in the markets for energy, oil and gas, paper, raw materials and transport & automotive. Founded in 1867, Voith today has more than 20,000 employees and earns 4.2 billion euros in sales.