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Compressor Housings

Compressor Housings

Material: Aluminum (A356-T6, 319-T6), Cast Iron (ASTM A48)
Manufacturing: Die Casting, Sand Casting, Shell Mold
Application: Scroll compressors, reciprocating compressors, rotary vane
Surface: As-cast, machined, powder coated
MOQ: 10 pcs
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Product Parameters

 

Item Specification
Material Aluminum (A356-T6, 319-T6), Cast Iron (ASTM A48)
Manufacturing Die Casting, Sand Casting, Shell Mold
Application Scroll compressors, reciprocating compressors, rotary vane
Surface As-cast, machined, powder coated
MOQ 10 pcs

 

description

 

Compressor housings contain the compression elements - scroll sets, pistons and cylinders, or rotors - and provide the mounting interface for the motor and associated piping. The housing must maintain precise clearances between rotating and stationary components through thermal expansion, and provide adequate heat dissipation for the compression process. Aluminum housings dominate in HVAC and refrigeration compressors because aluminum dissipates heat well and is light enough to make the unit manageable for installation. The die casting process produces smooth surfaces and tight tolerances in high volumes.
product-1376-768

 

Clearance Control in Compression Chambers

 

The clearance between the scroll sets or between piston and cylinder determines compressor efficiency. Too little clearance: thermal expansion during operation causes galling and seizure. Too much clearance: compression ratio drops and efficiency falls. Aluminum expands about 2.4 mm per meter at operating temperature - the housing design must account for this.

product-1376-768

 

FAQ

 

Q1: MOQ?

A1: 10 pieces for compressor housings.

Q2: Materials?

A2: A356-T6, 319-T6 aluminum. ASTM A48 gray iron for heavy-duty industrial.

Q3: Casting methods?

A3: Die casting (high volume), sand casting (low volume, large parts), shell mold (medium volume, better detail).

Q4: Surface finish?

A4: As-cast internal surfaces, machined mounting surfaces, powder coated external.

Q5: Custom configurations?

A5: Yes. Custom port locations, mounting provisions, and clearance geometries.

Q6: Testing available?

A6: Helium leak testing, pressure testing, dimensional verification.

 

Quality is non-negotiable in precision manufacturing. Every component undergoes rigorous inspection at each stage of production.

  • ISO 9001:2015 - Certified quality management system covering design, machining, and inspection
  • CMM Inspection - Coordinate measuring for complex geometries and tight tolerances
  • Surface Roughness Measurement - Ra, Rz, and Rt charting with every inspection report
  • Passivation / Electropolishing - ASTM A967 procedures for corrosion resistance
  • Material Traceability - Heat number tracking from raw material to finished part
  • First Article Inspection (FAI) - Full dimensional report included with every new order

 

From raw material to finished product, every step is controlled and documented:

  • Pattern Making - Wooden or metal pattern fabrication for sand/centrifugal/investment casting
  • Molding - Sand casting, shell mold, centrifugal, or lost-wax investment casting setup
  • Melting & Pouring - Controlled furnace melting with chemistry and temperature monitoring
  • Solidification & Shakeout - Controlled cooling with riser/removal and core shakeout
  • Heat Treatment - Annealing, normalizing, or solution treatment per specification
  • Machining - CNC machining, drilling, and tapping to final dimensions
  • Surface Treatment - Grinding, welding, or coating as required
  • Inspection & Testing - Dimensional, visual, hydrostatic, or NDT inspection
  • Cleaning & Packaging - Sand removal, degreasing, rust prevention, and packaging

 

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