Tonchel Industrial has been deeply involved in the manufacturing of high-end equipment metal components for many years. It integrates casting, welding, and precision machining into one core process, creating a full chain integrated manufacturing service from customer needs, product design review, blank forming, welding assembly, CNC precision machining, heat treatment, non-destructive testing, surface protection, to finished product delivery.

We specialize in the matching of non-standard heavy equipment components, supporting customized drawings and sample surveying and replication. We can undertake prototype sampling, small-scale trial production, and large-scale production. The products are widely used in the fields of petroleum equipment, wind power, woodworking machinery, testing and inspection equipment, large machine tools, lifting engineering machinery, etc. They can be produced according to domestic and foreign standards, with complete materials, heat treatment, and testing reports to meet the quality audit requirements of domestic equipment matching and foreign trade export projects.

1. Core business scope

Tonchel's industrial integrated manufacturing covers three core areas:

a. Customized casting manufacturing (cast aluminum, cast steel, etc.)

b. Mechanical component welding and assembly (including casting repair welding, dissimilar metal welding, and welding of large structural components)

c. CNC precision machining (casting/forging/welding blank precision machining, form and position tolerance control, thread, sealing surface, hole system machining)

Core advantages: Closed loop production of casting, welding, and machining in the same factory, eliminating the need for multiple suppliers to outsource, solving cross process pain points such as blank and precision machining size matching, welding deformation, and casting defects, shortening delivery cycles, and reducing customer procurement management costs.

2. Product material and blank type

2.1 Machinable materials:

Carbon steel, low-alloy high-strength steel, stainless steel, manganese steel, chromium molybdenum heat-resistant steel, aluminum alloy, ductile iron, gray cast iron, etc.

2.2 Raw material source:

Cast aluminum parts, cast steel parts, ductile/gray iron castings, welded assemblies, forgings, plates, bars, profiles.

3. Casting Manufacturing Solution

Tonchel Industrial relies on a mature casting process system and can customize various industrial castings according to customer working conditions, loads, and usage environments, taking into account both small precision parts and large heavy-duty castings. It supports customization based on drawings and replication based on samples.

3.1 Core Casting Categories

a. Cast aluminum parts: lightweight, excellent heat dissipation, corrosion-resistant, suitable for precision shells, support components, sealing bases, transmission accessories, meeting the needs of thin-walled and complex lightweight equipment, mostly used in precision testing equipment and woodworking machinery.

b. Steel castings: high strength, high toughness, impact resistance, wear resistance, strong load-bearing capacity, suitable for high pressure, heavy load, high and low temperature working conditions; Commonly used for core load-bearing components such as valve bodies, supports, large frames, crossbeams, and load-bearing bases in petroleum equipment.

3.2 Customized Cooperation Model

Customized casting based on drawings: Customers provide 2D/3D drawings, and the technical team conducts drawing review, casting process analysis, and structural optimization to avoid defects such as shrinkage, porosity, and deformation, ensuring size and performance.

Sample replication casting: no drawings, discontinuation of old spare parts, localization replacement of imported parts, providing physical surveying and reverse modeling, 1:1 restoration of part structure, size, and material properties.

3.3 Applicable Industry Casting Products

Petroleum equipment: Valve bodies, shells, supports, pipeline connectors for fracturing, cementing, and drilling equipment, resistant to high pressure and field corrosion.

Three coordinate detection equipment: equipment base, support frame, fixed base, low deformation, high stability, ensuring long-term measurement accuracy.

Experimental testing equipment: vacuum chamber body, load-bearing platform, sealed base, meeting high stability, sealing, and high load requirements.

Woodworking machinery: machine frame, transmission housing, counterweight block, fixed bracket, balancing strength and lightweight.

Large machine tools: bed, column, worktable, large base, strong rigidity, excellent seismic performance.

General machinery&lifting equipment: non-standard load-bearing castings such as brackets, flanges, bases, and suspension seats.

3.4 Casting process flow

Mold development → Molding/Casting → Blank cleaning → Heat treatment (normalizing/annealing) → Initial inspection of blank appearance and size → Transfer to welding/machining process.

4. Mechanical parts welding solution

We can undertake the welding of non-standard components, cast steel/aluminum parts, dissimilar metals, large frame assemblies, and crack repair of castings. We can complete the entire process from cutting and assembly, welding and forming, post weld heat treatment, and non-destructive testing.

4.1 Mainstream Welding Processes

MIG/MAG gas shielded welding: High welding efficiency and controllable deformation for large quantities of structural components

TIG argon arc welding: aluminum alloy, stainless steel, thin-walled precision parts, beautiful weld formation, suitable for sealing components

Submerged arc welding: Heavy structural components with thick plates, large long welds, deep penetration, and high joint strength

Manual arc welding: thick and large parts, on-site repair, cast steel and iron crack repair

Supporting process: preheating before welding, interlayer temperature control, hydrogen removal after welding, stress relief annealing, reducing residual stress, preventing cracks, deformation, and fatigue failure.

4.2 Typical Welded Components

Equipment rack, base, crossbeam, heavy-duty load-bearing bracket; Petroleum equipment shell, valve body components, pipeline welding assembly; Welding components for wind power, lifting, and woodworking machinery; Vacuum chamber and sealed box of experimental equipment; Welding of cast steel/cast aluminum blanks and repair of old equipment components.

4.3 Welding full process service

Drawing weldability review, groove design, deformation prediction → laser/plasma cutting, machining groove, fixture assembly → manual welding → post weld stress relief annealing, weld polishing → NDT non-destructive testing → transition to CNC precision machining.

5. Precision machining solutions

Provide CNC precision machining for castings, welding assemblies, and forging blanks, controlling form and position tolerances, fitting surface accuracy, sealing surface and thread accuracy, and achieving finished product delivery.

5.1 Core Processing Capability

CNC gantry/vertical milling: for large frames, boxes, valve bodies, and shells, processing large flat surfaces, porous systems, and complex cavities to ensure flatness and positional tolerances

CNC lathe, large vertical lathe: flanges, shafts, sleeves, rotating parts, inner and outer circles, end faces, conical surfaces, special threads

Floor boring and digital boring machine: boring of box holes, bearing holes, and deep holes to ensure coaxiality and roundness

Drilling, tapping, deep hole machining: bolt holes, oil passage holes, NPT oil pipe threads

Flat grinding and external grinding: high-precision mating surfaces to reduce surface roughness

5.2 Whole process of machining

Drawing DFM process review, tooling design → raw material re inspection (appearance, size, material of castings/welded parts) → sequential CNC machining, first piece inspection, process inspection → heat treatment stress relief → precision testing (CMM, hardness, roughness, spectral testing) → deburring and chamfering → surface protection treatment → final inspection of finished products

6. Surface treatment and testing system

6.1 Surface Protection Process

Sandblasting, primer and paint spraying, rust prevention treatment, passivation, etc., suitable for indoor, humid, and outdoor corrosive conditions.

6.2 Quality Inspection Items

a. Material testing: Spectral composition analysis

b. Mechanical testing: hardness test

c. Dimensional inspection: caliper, dial gauge, CMM measurement

d. Non destructive testing (NDT): selected as needed

e. Archiving of heat treatment records

7. List of typical integrated products in various industries

7.1 Petroleum equipment (fracturing/cementing/drilling): cast steel valve body, shell, flange, high-pressure welding assembly, precision machining after casting and welding, NDT inspection of pressure bearing welds.

7.2 Wind power equipment: cast and welded base, connecting flange, load-bearing bracket, stress relief and machining after welding, control deformation, and meet fatigue load requirements.

7.3 Testing Equipment: Cast aluminum/cast steel vacuum chamber, mechanical testing machine bearing platform, casting+welding sealing+precision flat processing, ensuring airtightness.

7.4 Woodworking Machinery: Frame box, transmission seat, counterweight components, casting blanks+welding assembly+batch machining, high assembly consistency.

7.5 Large machine tools: bed body, column, worktable castings, stress relief through aging, precision milling and grinding of guide rail surfaces, long-term stable accuracy.

7.6 Crane engineering machinery: lifting lugs, hinged supports, load-bearing brackets, cast steel/welded structural components, and non-destructive testing after precision machining.

8. Core advantages of the overall plan

8.1 Casting and welding machine with integrated closed-loop manufacturing. Casting, welding, and machining are completed in the same factory, and defects in the blank are identified in advance. The process connection is smooth, which solves the size deviation and information transmission error caused by cross factory outsourcing, shortens the delivery cycle, and reduces the cost of managing multiple suppliers for customers.

8.2 Proficient in welding castings and processing large parts. Tailored preheating, heat treatment, and machining allowance solutions for aluminum casting, cast steel, and cast iron that are prone to cracking and blank deformation issues; We can undertake domestic replacement of imported spare parts and repair of old parts.

8.3 The quality of the entire process can be traced, and it is suitable for foreign trade export WPS/PQR welding process evaluation, welder qualifications, material certificates, heat treatment records, and NDT inspection reports. It meets GB/ASTM/DIN standards and supports overseas customer factory audits.

8.4 Flexible order handling capability supports single prototype, small batch trial production, and large-scale production.

8.5 One stop delivery of finished products: Customers can directly assemble the finished products without the need for secondary outsourcing.

9. Complete cooperation process

Requirement communication → Drawing/sample reception, process review and proposal quotation → Casting/cutting preparation of blanks → Welding assembly (as required) → Post weld heat treatment, NDT inspection → CNC precision machining → Deburring and surface treatment → Full size re inspection of finished products, data organization → Rust proof export packaging → Logistics delivery → After sales technical follow-up.

Tonchel Industrial - Integrated Manufacturing Solutions: Casting, Welding & CNC Machining

Tonchel Industrial offers one-stop integrated manufacturing service including metal casting, structural welding and precision CNC machining.

We produce cast aluminum, cast steel, welded assemblies and machined finished components for oil & gas, wind power, woodworking machinery, test equipment and heavy machine tools.

Our full service covers drawing review, mold making, casting, cutting, welding, heat treatment, NDT non-destructive testing, CNC milling, turning, boring, grinding and surface coating. We provide full material certificates, heat treatment records and inspection reports, complying with GB, ASTM, DIN standards. We support prototype, small batch and mass OEM production for global customers.