Web Menu

Product Search

Language

Share

Yancheng Longwan Machinery Co., Ltd. HOME / PRODUCTS & APPLICATION / Grey Cast Iron / Grey Cast Iron Semiconductor Accessories

Grey Cast Iron Semiconductor Accessories Foundry

Grey Cast Iron Semiconductor Accessories provides a range of accessories made of high-quality grey cast iron for the semiconductor manufacturing industry. Although grey cast iron is traditionally used in machinery, agriculture and other fields, its unique physical properties, such as good stability and corrosion resistance, make it an ideal choice for manufacturing specific semiconductor accessories in semiconductor precision manufacturing. Such products include but are not limited to key components such as semiconductor packaging equipment support plates, brackets and bases. These accessories play a vital role in the semiconductor production process. They not only provide a stable support platform for precision semiconductor packaging equipment, but also ensure the stability and accuracy of the equipment during high-speed operation and complex process.

Grey Cast Iron Semiconductor Accessories OEM/ODM
ABOUT US
Yancheng Longwan Machinery Co., Ltd.
Yancheng Longwan Machinery Co., Ltd.
Founded in 2006, which located next to National Highway 204 in Yancheng City, Jiangsu Province, 40km from the center of Yancheng City, 5km from the center of Dongtai City, 30km from Dafeng District, and 10km from the exit of Baiju Expressway, with convenient transportation. We mainly produce various types of fire-fighting pipe fittings, reducer parts, auto parts, agricultural machinery, and industrial robot parts. Its main customers include SAIC Group, Deere, Bonfiglioli (China), Shanghai Beixu, Yaskawa Electric, etc. As a famous China Grey Cast Iron Semiconductor Accessories Foundry and Grey Cast Iron Semiconductor Accessories Suppliers, our company has a variety of molding equipment, including one vertical sand-shot horizontal parting boxless shot-press molding line with specifications of 610*510*240, 120 boxes/hour, suitable for mass production of small parts; one upper and lower sand-shot horizontal parting boxless shot-press molding line with specifications of 750*650*250, 100 boxes/hour, suitable for mass production of small and medium-sized parts; 3 sets of 1.25T medium-frequency electric furnaces; 3 cleaning shot blasting machines, and now planning a lost foam production line, suitable for 100Kg~1000Kg casting production, and planning an automatic spray painting line and an electrophoretic coating line at the same time, 3 CNC lathes and 3 lathes.
Yancheng Longwan Machinery Co., Ltd.

ODM Customization Expert

Advanced Production & Processing Equipment

Longwan Machinery has a variety of advanced domestic and foreign molding equipment, including 2 fully automatic production lines for clay sand, 1 semi-automatic production line for clay sand, and 1 coated sand production line, with an annual production capacity of 15,000 tons.

Yancheng Longwan Machinery Co., Ltd.

Complete Inspection Flow

Strict Quality Inspection

We have full-process testing equipment: spectrum analyzer, metallographic microscope, universal tensile testing machine, magnetic particle flaw detector, ultrasonic flaw detector, etc.
The above equipment can fully ensure that we can provide customers with high-precision final castings, and at the same time ensure that we meet customers' comprehensive testing requirements for physical and chemical properties of materials, non-destructive testing, high-precision geometric dimension testing, etc.

Professional Casting Expert

Comprehensive Casting Manufacturer

FAQ
  • Q
    Where are your products mainly exported to?
    A

    Our products are mainly exported to multiple countries such as Germany, Japan, Italy, South Korea, and Australia.
  • Q
    How to deliver the goods to us?
    A

    Usually, we ship by sea, which is very convenient for export.

    Of course, if the customer's goods are urgent, we can also air freight them. Ningbo Airport and Shanghai International Airport are both very close to us.
  • Q
    What's the payment term?
    A

    When quoting, we will confirm the transaction method with you.

    For mass production, we usually make a 50% advance payment in advance and then inspect and confirm the shipment before paying the remaining balance.
  • Q
    How to guarantee the quality of your goods?
    A

    Firstly, there will be corresponding inspections after each process, and for the final completed product, we will conduct a full inspection according to customer requirements and international standards;

    Then, we have advanced and complete top testing equipment in the industry: spectral analyzers, metallographic microscopes, universal tensile testing machines, magnetic particle testing machines, ultrasonic testing machines, etc.

    The above equipment can fully ensure the provision of high-precision final castings to customers, while also meeting the comprehensive testing requirements of customers for material physical and chemical properties, non-destructive testing, high-precision geometric dimension testing, and so on.
  • Q
    How many employees of your company? what about the technicists?
    A

    Our company has more than 120 employees, including 10 professional technicians and 5 engineers.
  • Q
    How about the capacity of your company?
    A

    We have 2 fully automatic clay sand production lines, 1 semi-automatic clay sand production line, and 1 coated sand production line, with an annual production capacity of 15000 tons.
  • Q
    Do you have some standard parts?
    A

    No, currently we produce and customize according to the requirements based on the drawings provided by the customer.
  • Q
    Can you do customized products?
    A

    Yes, we are mainly doing customized products according to the customers’ drawings or samples.
  • Q
    What applications do your products relate to?
    A

    Our products cover almost all the applicable equipment manufacturing and machinery manufacturing and processing fields, mainly including automotive trucks, engineering machinery, agricultural machinery, reducers, water pumps, water treatment systems, and other fields.
  • Q
    what products can you offer?
    A

    We mainly produce cast iron parts made of gray cast iron and ductile iron materials.
  • Q
    Are you a direct manufacturer or trading company?
    A

    We are a foundry and a manufacturer of cast iron parts.
  • Q
    How long can I get the feedbacks after we sent the inquiry?
    A

    We will reply to you within 24 hours of the working day.
NEWS
Grey Cast Iron Semiconductor Accessories Industry knowledge

Yancheng Longwan Machinery Co., Ltd. casts and machines grey iron and ductile iron components in Yancheng City, Jiangsu Province, and has supplied OEM castings since 2006. Within the grey iron family, our semiconductor accessory range covers support plates, machine bases, brackets, frames, covers and housings that stabilise wafer handling, packaging, inspection, photolithography, coating, etching and CVD equipment. As a China Grey Cast Iron Semiconductor Accessories manufacturer, we produce against the customer's drawing or sample, so wall sections, machining allowances, mounting interfaces and inspection points follow the application rather than a fixed catalogue.

Our Grey Cast Iron Semiconductor Accessory Range

Support plates and tooling bases

Flat platforms that carry packaging, bonding and inspection stations. We machine the mounting face and datum edges so the equipment stack keeps its alignment after assembly.

Machine bases, frames and housings

Structural castings for photolithography, coating and etching tools, produced as single bodies where the design benefits from high mass and continuous ribs.

Wafer-handling brackets and linkages

Bearing housings, arm frames and joint bodies for transport and robotic handling modules, where vibration damping and wear resistance matter more than low weight.

Thermal and vacuum hardware

Housings, covers and internal parts for chillers, heat exchangers, vacuum pumps and CVD chambers, where thermal conductivity and pressure tightness are specified.

Cleanroom equipment parts

Frames, boxes and mechanical components for filtration, material handling and contamination control units, finished for clean assembly and cleaning before installation.

Where Each Accessory Type Fits

Grey iron is chosen for semiconductor accessories because it combines damping, thermal conductivity and dimensional stability in one castable material. The table below links the part family to the equipment function and the property that justifies the material choice.

Accessory type Equipment function Grey iron property in use Specified on the drawing
Support plate, base plate Carries packaging, bonding and inspection modules Vibration damping, flatness retention Flatness, thickness, hole pattern, machined datums
Machine base, frame, housing Photolithography, coating and etching tools Mass, rigidity, low resonance Grade, rib layout, wall section, machined faces
Bracket, arm frame, joint body Wafer transport and automated handling Damping under continuous motion, wear resistance Bore tolerance, coaxiality, surface finish
Chiller and heat-exchanger housing, cover Temperature control in process lines Thermal conductivity, corrosion and wear resistance Wall integrity, sealing faces, pressure test
CVD chamber and vacuum pump parts Thin-film deposition under vacuum Thermal stress resistance, structural integrity Soundness, machined sealing grooves, coating
Cleanroom frames and mechanical parts Filtration, handling, contamination control Mechanical strength, thermal resistance, durability Cleaning requirement, paint or coating system

Related work moves through our Grey Cast Iron programme for general machine castings, and where impact load or elongation governs the design, the same accessory geometry can be reviewed as Ductile Cast Iron Semiconductor Accessories. Robot-mounted handling structures are handled under Grey Cast Iron Industrial Robot Accessories.

Casting Route, Grade and Machining

Grade selection follows the drawing or the duty of the part. Thin-walled brackets and plates are normally poured in a medium-strength grey iron grade with good machinability, while large bases call for a grade and section design that resist distortion. We confirm the grade, charge composition and pouring parameters before pattern making, and the spectrometer reading is retained with the heat record.

  • Shell or clay sand moulding depending on geometry, batch size and surface requirement
  • Coated sand cores for internal cavities, fluid passages and rib intersections
  • CNC turning and general lathe work for bores, faces, spigots and threaded features
  • Shot blasting for as-cast finish, followed by primer, paint or electrophoretic coating when specified
  • Machining allowances fixed at quotation stage so the drawing dimensions are achieved after finishing

For parts where flatness or bore alignment is critical, the machining sequence and datum choice are agreed with the customer's engineering team before the pattern is released. Where a design requires a welded assembly instead of a single casting, we raise it during drawing review rather than at first article.

Moulding Capacity and Production Equipment

Equipment Specification Typical semiconductor accessory fit
Vertical sand-shot, horizontal parting boxless line 610 × 510 × 240 mm, 120 boxes/hour Small brackets, covers, linkage parts in volume
Upper and lower sand-shot, horizontal parting boxless line 750 × 650 × 250 mm, 100 boxes/hour Small and medium support plates, frames, housings
Clay sand lines 2 fully automatic, 1 semi-automatic, plus 1 coated sand line Repeat production of the same part number at stable cycle
Melting 3 × 1.25 T medium-frequency electric furnaces Grade control across a mixed order book
Cleaning and finishing 3 shot blasting machines, 3 CNC lathes, 3 lathes Machined faces, bores and thread preparation before dispatch
Annual capacity 15,000 tons of castings Framework orders plus repeat releases

A lost foam line for 100 kg to 1000 kg castings and automatic spray painting and electrophoretic coating lines are under planning, which extends the size range available for large bases and adds in-house coating for parts that need a controlled finish.

Quality Control and Acceptance

Our quality system is built on IATF 16949:2016, and inspection runs through the whole process rather than at final dispatch only. Raw material batches are checked at random, in-process checks follow each operation, and finished castings are inspected against the drawing and international standards before shipment.

  • German SPECTRO direct-reading spectrometer for chemical composition
  • Tensile testing machine and 3T Brinell hardness tester for mechanical properties
  • Sonic velocity meter and metallographic microscope for structure and graphite form
  • Magnetic particle and ultrasonic flaw detection for soundness where specified
  • Sand testing with SAC hammer-type sample maker, SWY hydraulic strength tester, SSZ vibration sand sieve and SGS double-disc infrared dryer
  • Dimensional checks on machined faces, hole patterns and bores against the approved drawing

Acceptance can be arranged as a full inspection of finished parts, an agreed sampling plan, or a joint inspection with the customer's engineer before packing. Inspection records, material certificates and dimensional reports are issued with the shipment scope agreed for the part number.

Information We Use to Configure Your Solution

We quote from a drawing or a physical sample, and a small set of inputs removes most of the clarification rounds. Where a detail is open, we propose a casting route and note the assumption in the quotation.

  • 2D drawing or 3D model, with the revision and the datum scheme
  • Part function in the tool: support, base, housing, bracket or sealing cover
  • Material grade and any hardness or tensile requirement
  • Critical tolerances, flatness, bore fit and surface finish callouts
  • Machined areas against as-cast areas, and required machining allowance
  • Annual volume, release pattern and first-article quantity
  • Finishing specification: shot blasted, primed, painted or electrophoretically coated
  • Inspection level, documentation set and any source inspection requirement
  • Packing method, marking and delivery point

Documentation, Packaging and Service

Every part number starts with a confirmed drawing, then pattern making, sample approval, mass production and final inspection before shipment. Samples are sent for customer confirmation before production orders run, which keeps tooling risk contained.

Parts are packed to protect machined faces and sealing surfaces during sea or air freight; both Ningbo and Shanghai are within reach of the plant. Replacement castings for existing tooling can be re-run from the retained pattern, and our engineers stay available for drawing changes, tolerance questions and production follow-up while the part is in service.

Frequently Asked Questions

Do you supply semiconductor accessories from a standard catalogue?

We produce to order from customer drawings or samples. There is no fixed accessory catalogue, so each support plate, base, frame or housing is quoted with its own material grade, pattern, machining scope and inspection plan.

Which grey iron grades can you pour for these parts?

The grade is agreed against the drawing and the duty of the part, with composition verified by spectrometer on each heat. Where the application needs higher elongation or impact resistance than grey iron provides, we review the same geometry as a ductile iron casting.

How is dimensional stability handled on large bases?

Section design, rib layout, gating and cooling are planned together so mass is distributed evenly, and machining datums are agreed before the pattern is cut. Flatness and bore positions on the finished part are then checked against the approved drawing.

What inspection records ship with an order?

The documentation set is agreed at quotation and typically covers chemical composition, mechanical properties and dimensional results, with non-destructive testing when the drawing calls for it. Joint inspection with the customer's engineer can also be arranged before packing.

Can you add finishing and coating to the casting scope?

Shot blasting is part of our normal finishing route, and primer or paint systems are quoted per part. Automatic spray painting and electrophoretic coating lines are being added, which will bring coating in-house for accessory orders that require a controlled surface condition.