Heat treatment and hardening

Heat Treatment & Hardening Planned for the Material, Part and Required Result

ROCKVANTA supports buyers looking for an induction hardened parts manufacturer or project-specific heat-treatment support. Start with the material, supplied condition, area to be treated, required result and the operations that follow.

Blue industrial heat-treatment and quenching system inside a manufacturing workshop

Part definition

Drawing, sample, revision and critical geometry

Material state

Grade, supplied condition and prior processing

Required result

Hardness or another specified performance target

Critical zone

Area to treat and case depth where relevant

Follow-on operations

Machining, finishing, inspection and assembly

Treatment method

Select the Method From the Material and Required Result

Induction hardening and furnace heat treatment address different part requirements. ROCKVANTA reviews the approved part information to select the applicable method.

A localized journal on a steel shaft passing through an induction coil and quench ring
Localized treatment

Induction hardening

Use the drawing to identify the surface or zone that needs treatment, the material condition, the required result and any relationship that must be protected. Coil, setup, process and verification requirements are reviewed for the specific part.

Steel components in batch fixtures entering an open rail-guided heat-treatment furnace
Whole-part or batch treatment

Furnace heat treatment

Use the drawing and material definition to review whole-part or batch treatment where applicable. Part geometry, loading, distortion risk, required condition and subsequent machining or finishing must be considered together.

Material range, temperature, cycle, hardness, case depth, distortion allowance and batch arrangement are confirmed for the quoted part and treatment method.

Heat-Treatment Equipment and Working Range

Provide the grade, supplied condition, treated zones and hardness requirements. We check the load arrangement and treatment route, then confirm the process and inspection points for your part.

Equipment and loading

Processes
Induction hardening, tempering and normalizing
Hardening equipment
2 machines; JZ200 and JZ300 models listed in the equipment schedule
Working-space reference
Ø1,000 × 1,500 mm
Furnace-load reference
2 tonnes per batch
Single-part reference
1 tonne

Process definition

Furnace-temperature reference
Up to 1,200 °C
Hardening-depth reference
12 mm for the stated treatment programme
Hardness checks
Vickers, Rockwell and portable hardness instruments
After treatment
Hardness, treated zones, distortion and remaining machining allowance checked against the part requirements

Working space, loading, temperature and hardening depth describe separate equipment or process references. The material and part geometry determine the achievable combination.

Flush-mounted steel cross-section positioned under a microhardness tester for case-depth review
Before treatment review

Start With the Material and the Result

Define the material, supplied condition, treatment area and required result before process planning.

Material and supplied condition

State the grade, prior treatment and the condition in which the part reaches the process.

Required result

Provide the required hardness or performance result and the applicable test method.

Treatment zone

Mark the surface, depth or area that matters and any nearby interface that must be protected.

Downstream work

Identify later machining, grinding, coating, inspection or assembly that may change the sequence.

Flag every open hardness or case-depth requirement for technical review.

Treatment planning

Align the Part Definition, Treatment and Inspection Records

A useful process plan links the approved part information, treatment method and required acceptance records.

  1. Chinese manufacturing engineer comparing a steel shaft with its controlled drawing and marked treatment zone

    Review the definition

    Confirm the drawing, revision, material, supplied condition, treatment zone and quantity.

  2. Chinese engineers comparing induction-coil tooling with a furnace batch fixture for route selection

    Select the treatment method

    Review whether induction hardening, furnace treatment or another project-specific path is relevant.

  3. Chinese process team checking the induction coil, shaft setup and process sheet before treatment

    Coordinate the process

    Confirm the sequence, handling, protection, follow-on work and required in-process controls.

  4. Hardness test being performed on a hardened steel connecting pin

    Verify and release

    Complete the specified inspection and connect the agreed records to part identification and release.

Acceptance plan

Define the Checks Before the Process Starts

Inspection follows the quoted requirement. Depending on the part and order, the plan may include hardness testing, dimensional checks, NDT or other agreed records where applicable.

Industrial quality inspection area used to coordinate project-specific checks

Hardness and case review

Confirm the applicable method, location, frequency and record requirement for the quoted scope.

Dimensional relationships

Identify features that need checking before or after treatment because they affect fit or later machining.

NDT where applicable

Define the method, acceptance reference and report requirement before work begins.

Records and traceability

Agree the material, process, inspection and identification records that must travel with the order.

Chinese NDT technician using a magnetic yoke on a supported steel shaft where specified
Chinese quality engineer reviewing a drawing, steel pins and neutral inspection records

Third-party inspection

If required, the buyer may arrange an inspector, nominate an inspection body or ask ROCKVANTA to coordinate with a suitable provider. Timing, scope and cost must be agreed before the order or shipment. Inspection, reinspection and report fees are buyer-paid.

Assign Heat Treatment and Supporting Work to the Relevant Base

ROCKVANTA owns and operates five specialized manufacturing bases. Our team reviews the part, material, treatment, inspection and project requirements, assigns the relevant base and coordinates any supporting work.

Heat-treatment equipment, production scope, available capacity and timing are confirmed for the specific RFQ.

How We Select a Manufacturing Base

Review the approved part definition.

Assign the relevant manufacturing base and treatment method.

Coordinate machining, treatment, inspection and records.

Confirm packing and release requirements.

Aerial view of manufacturing buildings and the internal logistics entrance
Chinese project engineer preparing a heat-treatment RFQ with a marked drawing, steel shaft and induction coil

Send the Part and Material Details Needed to Plan Heat Treatment

A useful RFQ shows the part before treatment, the result required after treatment and the work that follows. Mark any open point for technical review.

Specifying the hardened condition? Compare induction surface and through hardening

  • Drawing, model, revision or reference sample
  • Material grade and supplied condition
  • Required hardness or other acceptance result
  • Treatment zone and case depth where relevant
  • Critical dimensions and protected interfaces
  • Machining, finishing, inspection and record requirements
  • Quantity, project stage, destination and packing needs

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