Bid Document and Quotation Preparation for Steel Rolling and Finishing: Multi-turn Dialogue and Prompt Engineering

Business data for steel rolling and finishing comes from slab or billet batches, heating furnaces, mill automation control systems, online thickness

This configuration is based on FastGPT v4.17.0, and adapts to bid document and quotation preparation needs for steel rolling and finishing scenarios.

What the data for this category looks like

Business data for steel rolling and finishing comes from slab or billet batches, heating furnaces, mill automation control systems, online thickness and width measurement tools, surface inspection systems, and MES systems. Data updates in real time per coil or per piece. Daily documents include rolling plans, heating schedules, rolling specifications, plate shape and thickness records, surface quality reports, and quality certificates. Data fields include batch identifiers, process temperatures, reduction amounts, rolling speeds, geometric dimensions, surface defect grades, and more. Units include millimeters, degrees Celsius, meters per minute, and others.

Constraints on multi-turn dialogue and prompt engineering

Because data updates in real time per coil or per piece, the context window for multi-turn dialogue must be limited. This avoids loading outdated or redundant historical data. Business documents contain a large number of specialized technical terms. Prompts must clearly specify identifiable fields and units to ensure AI output complies with industry standards. Data is tied to batch dimensions, so multi-turn dialogue must support binding the current bid’s coil batch number. This allows accurate matching of process and quality data for the corresponding batch. Complex process calculations require long processing times. The dialogue timeout threshold must be adjusted to match business needs, to avoid interrupting the workflow.

Configuration Settings

Configuration ItemRecommended SettingRationale
Maximum context length8000–12000 tokenMatches the total character count of documents related to a single coil, avoids context overflow
Knowledge base recall countTop 6Covers core documents such as rolling specifications and quality reports for a single batch
Prompt variable bindingEnable variablesBinds coil batch and material parameters involved in the bid to accurately match business data
Dialogue context messages retention roundsLast 3 roundsReduces redundant historical data, focuses on current quotation and document preparation needs
Session identifier chatId bindingBind current bid project IDDifferentiates dialogue contexts for different bid projects to avoid data confusion
Timeout threshold600 secondsAdapts to retrieval and calculation processes for complex process data
Document chunk length1000–1500 charactersMatches single-section content length of rolling specifications, improves retrieval accuracy

Three Common Misconfigurations

  • Phenomenon: Incorrect labels for non-business fields appear in dialogue logs, such as marking device IP addresses as rolling parameters. Cause: The prompt does not limit the scope of labeled fields, leading to misidentification of unrelated data.
  • Phenomenon: AI dialogue output is displayed in real time on the workflow page, interrupting subsequent text splicing steps. Cause: No delayed trigger rule for dialogue output is configured, and real-time generated results are returned directly.
  • Phenomenon: Quality certificate data retrieved from the knowledge base cannot be correctly referenced in AI dialogue. Cause: The field format of quality certificates is not standardized in the HTTP request processing stage, preventing the AI from matching the business context.

How to Verify Configuration Completion

  • Initiate a test dialogue that includes a specified coil batch number. Check whether the AI can associate rolling specifications and quality report data for that batch.
  • Test multi-turn dialogue context transfer. Confirm that quotation parameters generated in the first round can be used as input for the second round of dialogue.
  • Trigger the complete workflow. Check whether the AI output returns the specified result only after the text splicing component finishes processing.
  • View the dialogue log. Confirm that labeled fields only include business-related process parameters and quality data.

The values provided are common starting points and should be measured against the reader's own samples.