Engineering Technology Overview
Wuyuan Jieyi Automotive Electrical Appliance Co., Ltd. develops and manufactures standard and non-standard fasteners, including bolts, screws, rivets, dowel pins, locating pins, cylindrical pins, shafts, stepped shafts and custom cold-forged parts. Its engineering and production work combines drawing- and sample-based product development with multi-station cold heading, thread rolling, CNC machining and related finishing processes. Engineering work covers product requirement review, cold-forging and tooling processes, secondary operations, and process improvement.
Product Engineering & Drawing Review
Custom fasteners and cold-forged components can be developed from customer technical drawings or supplied samples. Technical consultation and preliminary solutions are provided with reference to the part's application scenario, operating parameters and applicable compliance requirements.
Cold Forging & Tooling Engineering
Multi-station cold heading forms fastener blanks through successive forming stages. The forming sequence and die arrangement are selected according to each component's geometry and specified dimensions.
Tooling adjustments and mold improvements are applied to the cold-heading operation for standard fasteners and custom non-standard components.
Secondary Processing & Process Coordination
Cold-forged components may require secondary operations to achieve specified thread features, dimensions or surface conditions. Depending on the drawing and agreed specification, the manufacturing route may include precision thread rolling, CNC machining, centerless grinding, ultrasonic cleaning and heat treatment.
Surface-treatment options include galvanizing, Dacromet coating, black zinc plating and blackening. Not every operation is required for every part; the process sequence is determined by the product specification and application requirements.
Process Development & Optimization
Process development focuses on refining the manufacturing method once the product's basic process route has been defined. The production method is reviewed against the component drawing and customer requirements, with adjustments made when specifications or production conditions change.
Process optimization aims to improve consistency and production efficiency in the manufacturing method. Each adjustment is considered against the requirements of the specific part; a setting used for one component is not automatically applied to another.
Engineering Technology FAQ
How are pre-production sample arrangements confirmed?
-
Sample availability, cost and lead time are reviewed against the part drawing, material and tooling requirements. The agreed sample arrangement is confirmed before the order proceeds.
How is the minimum order quantity (MOQ) determined?
-
MOQ depends on part design, material, tooling requirements and the selected production route. The confirmed quantity is stated in the quotation.
What details should a custom locating-pin drawing include?
-
The drawing should specify the pin diameter, overall length, end geometry, fit or tolerance requirements, material and any required surface finish.
What information is needed for a custom stepped shaft?
-
Provide the diameter of each shaft section, overall length, shoulder locations, dimensional tolerances, material specification and required surface finish.