Qimtek

Process: Presswork

Overview

Presswork is a method to form sheet metal into various shapes by using a press machine.

When pressing, a machine tool punches the workpiece with great force. A tool is placed in the machine press' upper part and when it hits the sheet metal, the workpiece is formed. The lower part of the machine press contains a tool which corresponds to the upperpiece. After the press is performed, the upper part is lifted to press again or to switch workpiece. Many machine presses can do several hundred cycles per minute. When the press is done, the workpiece is the same shape as the tool. Of course, this means that every component needs a customized tool and a corresponding tool for the press machine's lower part, sometimes referred to as a die.

Which press machine is suitable for which component is determined by the workpiece's length and width (X,Y), the press force (measure in tons or kN) and what type of press machine is suitable.

The press force is usually the most critical. It is the force the upper part of the machine has when it hits presses the workpiece. It is determined by the type and thickness of the material and the amount of material to be pressed. Big sheet metal pieces that needs a large amount of pressing, needs the biggest press machines. These are primarily found at large suppliers to the automotive, white goods and ventilation industries. However, common sized press machines are available at any sheet metal fabricator.

There are also several kinds of press machines; mechanical, hydraulic, folding (press brake) and excenter presses. Most modern press machines can also do some punching and cutting. Some are suitable for deep drawing too. Which press machine and method that can perform each job differs, so sometimes, if uncertain, the purchaser can ask the supplier to determine this.

Generally, every sheet metal fabricator has at least one machine press.

Picture: DMP-Direct Metal Presswork

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Presswork projects for quote

  1. Drawings count: 3

    Sheet Metal Forming-Presswork

    This client, a company who spend £90,000 per year on outsourced fabrication, seeks a supplier to produce large volumes of pressed components from stainless steel. These items are currently produced in-house from iron, however, the client is looking at production in stainless steel but lack the in house capacity needed to do so. A new supplier is required to produce these items on a long-term basis with quotes required for between 8,000 to 60,000 per month depending on the drawings, please see the batch information for further details. Further sizes of these cell cups will also be made available once a relationship is established with the chosen supplier, making this an opportunity not to be missed.

  2. Drawings count: 2

    Sheet Metal Forming-Presswork

    This company spends an impressive £300,000 every year in the subcontract fabrication arena. Currently, a presswork supplier is sought, in order to aid the client with the manufacture of washers. These are destined for end use within the construction industry and must adhere to the attached specifications and criteria. These parts are to be made from stainless spring steel or 304 stainless steel. The initial requirement is for 50,000 or 100,000 off pieces, which will hopefully become an ongoing requirement. The buyer will require pre-production samples to evaluate before the final order is approved. IMPORTANT: There is a non-disclosure agreement running with this enquiry. Please print this off, complete ALL sections, sign and date it and return the pages to sourcing@qimtek.co.uk or fax 01256 394600. Once received, all drawings and documents will be released to your account.

  3. Drawings count: 1

    Sheet Metal Forming-Presswork

    The client, a manufacturer of heating products for both the domestic and industrial markets, seeks a supplier to produce the attached aluminium pressings. This project is expected to last for 10 years, with annual quantities of 10,000 off per year, to be ordered in call-offs of 2,500 off per quarter. This project is best-suited to those looking to fill ongoing capacity, owing to the length of the contract and the annual batches required.

  4. Drawings count: 2

    Sheet Metal Forming-Presswork

    Outsourcing £250,000 of fabrication work every year, this company is currently seeking a supplier who can press the attached aluminium plates. The client has an order ready to place for its production, which will also lead to several repeat orders. The ideal supplier will be able to provide a high-quality end product as well as producing these parts economically and offering reliable delivery. Once a relationship has been established, further projects could be made available in addition to this ongoing requirement.

  5. Drawings count: 1

    Sheet Metal Forming-Presswork

    This client is looking for a supplier of a new aluminium filter component, to be manufactured for use within the automotive industry. Tooling will also be required. An initial sample of 50 off will be requested once the tooling is ordered, followed by an annual requirement of 100,000 off. This is therefore a great opportunity to fill long-term capacity.

  6. Drawings count: 1

    Sheet Metal Forming-Presswork

    This company operates within the industrial machinery sector and outsources over £60,000 worth of fabrication work every year. The client is currently seeking a supplier who can manufacture the attached crimps in stainless steel. Quantities will range from 10,000 off to 30,000 off per year as an ongoing requirement, making this an ideal opportunity for those looking for long-term capacity fulfilment. Tooling is also required for the presswork and the buyer has an immediate order ready to place for its production. Those that are interested in being considered for this job are asked to make contact with the buyer directly to discuss; in addition, this could result in further opportunities, once quality and reliability have been proven.

  7. Drawings count: 4

    Sheet Metal Forming-Presswork

    A UK supplier is sought, in order to assist with the pressing and serrating of these Julienne blades. This part is being sourced on behalf of the end client, by the plastics manufacturer who make the rest of the assembly. This order will be a yearly requirement of similar quantities, starting towards the end of 2019; due to the logistics involved, contact from interested parties is sought this side of Christmas 2018.

  8. Drawings count: 1

    Sheet Metal Forming-Presswork

    This manufacturer of gas burners, who outsources a massive £55,000 a year on fabrication, requires an ongoing supplier for the attached burner flange, making this an ideal enquiry for a company looking to fill long-term capacity. Due to an increase in quantity the buyer urgently seeks an alternative supplier for this part. There is an initial order ready for 200 off with ongoing yearly batches of 400/600 expected.

  9. Drawings count: 5

    Sheet Metal Forming-Presswork

    Destined for end use within the automotive industry for a well-known brand of 4x4 vehicle, these brackets are to be made from mild steel. Quotes are required ranging from 5712 off and 11424 off per year, delivered in smaller batches 3-4 times per year, making it an ideal opportunity to fill long-term capacity. In addition, there may be scope for the chosen supplier to expand upon their involvement with the client moving forward.

  10. Drawings count: 1

    Sheet Metal Forming-Presswork

    This window manufacturing company, who outsources a massive £300,000 a year on fabrication, requires an ongoing supplier for the attached glazing clip, making this an ideal enquiry for a company looking to fill long-term capacity. The clip is to be manufactured from stainless steel - an updated version of an existing part which is currently made overseas. Keen to return production to the UK, the client is looking to speak with Qimtek members who are able to produce this item in accordance with the drawing provided.

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