KNOLL: VL Vacuum Filter Systems

Application Areas

The vacuum filter VL is a high performance filter for cleaning the coolant lubricants of machining processes, in particular grinding processes. Depending on the requirement, several filter elements can be used for individual machines (locally) or machine groups (centrally). Its special efficiency is a result of high energy efficiency, low cooling lubricant loss and low disposal costs.

  • Production of pure concentrate with low residual moisture as standard without filter aids
  • Optimized filter capacity, filter quality and energy efficiency thanks to a flawless control system
  • Continuous filter process without reverse flushing interuption
  • Forced degasification of coolant lubricants in the filter
  • Can be used for different machining processes, materials and coolant lubricants
  • Problem-free removal of light metal chips

Filtering Process

The contaminated liquid flows through the inlet box into the filter. It then runs through the filter belt into the filter chamber. From there, a filter pump conveys the filtered medium into the clean tank. The vacuum pump generates a vacuum in the filter chamber. The high pressure differential at the filtering surface creates a thick filter cake (concentrate) on the filter belt. This filter cake also acts as a filter medium and separates smallest dirt particles. The filter and vacuum pumps are regulated demand-driven and and provide for a tranquilized, constant filtering process.

Filter Belt Regeneration

The permeability of the filtering surface decreases as the filter cake grows. Now the belt drive switches on and conveys the carrier belt together with the filter belt a little further. Thereby, permeable filter belt reaches the filter surface and the volumetric flow through the filter surface continues to rise again. The feed length varies in such a way that the set clock cycle remains constant.

The endless filter belt passes through the following stations:

  1. Filtering section (separation of the dirt particles)
  2. Drying section (extraction of liquid from the concentrate)
  3. Cleaning with air or brush (removal of the concentrate)
  4. Back flushing (removal of the residual particles)

Please contact us for more information on KNOLL Filtration Systems for your process.

 

 

HORN: New FB Geometry for Groove Finishing

New Geometry for Finishing Grooves

Paul Horn GmbH is proud to present the FB geometry, a solution for finishing grooves.  The new geometry has been in response to user requests for even better surface quality on the flanks and at the base of a groove or recess. This geometry has already been in use successfully for some time as a special solution for producing grooves for sealing rings and shaft seals. High surface quality is possible without any problems in the finishing process, even when the conditions are unstable. Horn offers the geometry for a variety of systems for external and internal grooving.

The geometry is available as a standard tool for the 224, 229, S34T, 315 and 64T systems for precision machining of external grooves. For internal machining, it is available for the 105, 108, 111, 114 and 216 systems. Further insert types are available as special tools and can be delivered quickly via the Greenline system, whereby it is possible to deliver up to 50 customized inserts, depending on the design, within five working days after approval of the drawing by the customer.

KNOLL: Chip Reducers

 

  • Chip Reducer ZV-J (Single Shaft with Double Faced Blades)

KNOLL chip reducers cut metal and plastic chips to bulk material quality. The reducers can be installed on machine tools or at central collecting points. Depending on model, horizontal or vertical chip feed is possible, together with faulty part ejection in some applications.

Please contact us for more information on the KNOLL Chip Reducers for your machining process.

 

HORN: Expertise in Pipe and Sleeve Machining

 

Paul Horn GmbH has succeeded in winning over the world’s leading manufacturers of machine tools for pipe and sleeve production, as well as end users, through the continuous development of customer-focused tool solutions. The tool manufacturer is able create cost-effective machining solutions for use in API- and GOST-compliant as well as premium joint applications. With a focus on user-friendliness, the tools are designed to deliver a productive edge over other solutions in the areas of handling, service life and cost per threaded connection. Horn’s own in-house product management department, which is actively engaged in the development and continuous optimisation of productive machining concepts for OCTG, designs and delivers both standard and customer-specific tools.

Horn’s product portfolio, which is designed to meet users’ productivity requirements, can offer the right package of tools for all machines. The tool systems are available with standard machine interfaces including VDI, polygonal shank and round shank holders as well as solutions that are flange-mounted on turrets. The tools are adapted to the degree of automation in the system – from manual loading all the way through to fully automated production – and are designed provide a solution that can be relied upon to meet the requirements. Both the screw clamp and the ground chip formers of the S117 and 315 systems, together with the carefully matched tool holders, make it possible to manage chip removal during sleeve and pipe end machining processes. There are no expensive parts such as chip breakers or shims to install, allowing customers to make significant savings when procuring tools. The two systems demonstrate highly precise interchangeability and use substrates and coatings for the inserts that are tailored to machining conditions, resulting in significant improvements in both cutting performance and tool life. The precise interchangeability provided by the precision insert seats reduces the number of tool adjustments that are needed after changing inserts.

In thread cutting in API- and GOST-compliant applications, the S117’s numerous teeth enable the number of cuts to be minimised. The 315 system has three usable cutting edges, leading to significant cost optimisation. It is an ideal choice for premium joints that permit no more than one to three teeth per cutting edge. The tool carrier is designed to work in perfect harmony with the insert, increasing the stability of the tool system. This means a lower tendency towards vibration, something that in turn improves surface quality, precision and tool life.

In applications involving pipes with profiles that comply with ANSI/API-5L, Horn offers tool solutions for pipe end finish machining in line with customers’ requirements. The milling heads can be used to machine pipe ends with a wall thickness of up to 50 mm. Integrated rollers compensate for any roundness errors. The workpieces that are produced comply with API tolerance requirements.

With its M101 cut-off milling system, Horn offers a purpose-developed tool for pipe end machining after rolling and for separating sections for analysis. The tool can also be used for pipe and sleeve assembly. The S101 self-clamping inserts, featuring cutting widths of 2 mm and above, deliver highly precise interchangeability, accurate cuts and short machining times.

Horn’s extensive scope of manufacture covers everything from producing blanks in its own carbide machining department, via the internal  grinding shop and production support all the way through to in-house-developed PVD coatings. This keeps the company’s lead-times short. Furthermore, with the Greenline system, for limited quantities Horn is able to offer delivery within one week of a drawing being approved by the customer. Not only that, but the tool manufacturer also allows users to benefit from process consultation services and acts as a solution provider, using its own in-house product management processes. Horn boasts expertise in machining a range of materials, from the easy-to-machine options of J55-K55, L80 and P110 to Q125 and all the way through to high-alloy materials like 13Cr or 28Cr.

Increasing drilling depths and more aggressive operational environments mean that CRAs (corrosion-resistant alloys) have become a focal point in pipe manufacture. Processing is a real challenge because these materials, which are used in HPHT (high pressure high temperature) fields, are so difficult to machine. The full weight of Horn’s expertise is in demand due to the formation of built-up edges resulting from the machining of these tough materials. The company’s many years of experience and in-house manufacturing capability are of real benefit here. Thanks to HiPIMS coating technology, the in-house produced coatings IG3 and HS3 exhibit smooth cutting properties and high heat resistance. The tool geometry, the substrate and the coating are adapted to meet the requirements of each application.