Customized Curve Grate Wear Resistant Casting Parts

Customized Curve Grate Wear Resistant Casting Parts

We are a professional manufacturer of high-performance curve grates, designed for heavy-duty mining, quarry, crushing and ore processing equipment. Our curve grates are made from premium wear-resistant casting materials with advanced heat treatment, delivering exceptional hardness, toughness and long service life under extreme working conditions.

All curve grates can be fully customized according to your drawings, dimensions, material requirements and installation standards. We support OEM & ODM services to ensure perfect fit and reliable performance for your equipment.

Key Features:

• High wear resistance & impact resistance
• Premium casting steel with stable structure
• Customized size, hole pattern and thickness
• Long service life, reducing maintenance frequency
• Perfect replacement for original parts
• Product Parameters

  Parameter	Specification
  Application	Mining crusher, hammer crusher, quarry screening equipment, ore processing machinery
  Material	1. High Manganese Steel Mn13Cr2 2. High Chromium Cast Iron Cr26/Cr27 3. Alloy Wear-resistant Cast Steel
  Technology	Precision sand casting + integral heat treatment + finish machining
  Hardness	HRC 40 - HRC 65 (adjustable by material)
  Thickness	20mm - 120mm
  Length	500mm - 3000mm
  Width	200mm - 1500mm
  Hole Type	Square, rectangular, round, oval, custom shape
  Radian	Custom R value according to drawings
  Features	Wear resistance, impact resistance, not easy to break, stable structure, long service life
  Custom Service	OEM / ODM, custom by drawings or samples, customized holes and mounting holes
  Packaging	Fumigated wooden crate / steel frame packing for sea freight
  Quality Test	Hardness test, dimensional inspection, flaw detection

  Inspection Procedure

1. Incoming Quality Control (IQC) – Raw Material Inspection

1. Verify material certificates for furnace charge, scrap steel and alloy elements upon receiving raw materials.
2. Conduct sampling spectrometer test for key chemical elements including C, Cr, Mn, Si, P, S.
3. Isolate unqualified raw materials and prohibit them from casting production.

2. In‑Process Quality Control (IPQC) – Production Patrol Inspection

1. Check molds and tooling, verify dimensions, curvature and cavity against customer drawings. Special attention shall be paid to the curve radian for customized parts.
2. Patrol and record process parameters such as molding sand and pouring temperature.
3. Remove sand and cut gates & risers after casting. Carry out preliminary visual inspection and mark batch numbers on castings.
4. Monitor heat‑treatment procedures (quenching & tempering) and control hardness parameters, which is critical for wear‑resistant parts.

3. Final Quality Control (FQC) – Finished‑Product Inspection

1. Visual Inspection Carry out visual check and Magnetic Particle Testing (MT) to detect defects such as porosity, sand holes, cracks, shrinkage cavities and inclusions. Penetrating cracks are not allowed on wear‑resistant castings.
   
2. Dimensional Inspection Measure overall dimensions, curvature, mounting hole positions and thickness by calipers and special gauges according to customer drawings. Re‑check the curve radian for customized curve grate parts.
   
3. Hardness Test Perform sampling Brinell / Rockwell hardness test to meet technical requirements of wear‑resistant components.
4. Re‑check of Chemical Composition Sample finished castings for re‑analysis of chemical composition and issue material test reports.
5. Weight Verification Compare actual single‑part weight with theoretical weight specified on drawings.

4. Outgoing Quality Control (OQC) – Pre‑shipment Inspection

1. Cross‑check item model, quantity and part numbers to be consistent with purchase order.
2. Re‑examine surface defects. Mark qualified products; non‑conforming items shall be reworked or scrapped.
3. Take archive photos for individual pieces and full batch cargo, which can be provided to overseas customers.
4. Inspect packaging: confirm reinforcement of wooden cases / pallets, anti‑rust protection and shipping marks.
5. Issue full set of inspection documents including material certificate, hardness report and dimensional test records, sent by email or together with goods.

5. Non‑conforming Product Handling

Minor defects: Evaluate feasibility of grinding repair. Re‑perform full inspection after rework.

Severe defects: Scrape the parts directly and arrange reproduction, and inform customers accordingly.