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Year 10 Edexcel Engineering: Case Study Practice Walkthrough | Year 10 Edexcel 工程：案例分析实战演练

2026-07-19 18:41 · 本文部分内容由AI辅助创作

📚 Year 10 Edexcel Engineering: Case Study Practice Walkthrough | Year 10 Edexcel 工程：案例分析实战演练

Case studies are a core part of your Edexcel Engineering course. They test your ability to apply knowledge about materials, manufacturing, testing, and systems to a real-world product scenario. This walkthrough gives you a structured approach to tackle any case study question successfully.

案例分析是 Edexcel 工程课程的核心部分。它考查你将材料、制造、测试和系统知识应用于实际产品场景的能力。本实战演练为你提供了一套结构化的方法，帮你成功应对任何案例分析题目。

1. Introduction to Engineering Case Studies | 工程案例分析简介

In the Edexcel GCSE Engineering exam, you will often be given a design brief or a description of an existing product. Your task is to suggest suitable materials, justify manufacturing methods, propose quality checks, and evaluate the design. The case study tests your understanding of the whole engineering cycle from design to disposal.

在 Edexcel GCSE 工程考试中，你经常会收到一份设计概要或对现有产品的描述。你的任务是建议合适的材料、论证制造方法、提出质量检查措施并评价设计。案例分析考查你对从设计到报废的完整工程周期的理解。

2. Reading the Case Study Brief | 阅读案例分析概述

Start by carefully reading the brief. Highlight keywords: function, target user, quantity, cost, and any special requirements (e.g., waterproof, lightweight). For instance, a brief might say: 'Design a portable phone stand for use on desks. It must be stable, lightweight, and adjustable in angle. Budget production of 10,000 units.'

首先仔细阅读概述。标出关键词：功能、目标用户、数量、成本以及任何特殊要求（例如防水、轻便）。例如，概述可能会说：“设计一款用于桌面上的便携式手机支架。它必须稳定、轻便并且角度可调。预算生产 10,000 件。”这样信息就为后续分析奠定了基础。

Make a quick list of the specifications: 1) portable; 2) stable on a desk; 3) lightweight; 4) adjustable angle; 5) mass-produced (10,000 units). This will guide all your later decisions.

快速列出规格清单：1) 便携；2) 在桌面上稳定；3) 轻便；4) 角度可调；5) 批量生产（10,000 件）。这将指导你后续的所有决策。

3. Identifying Key Requirements | 确定关键需求

Break down the specification into measurable criteria. For example, 'lightweight' may mean less than 150 g. 'Stable' may mean it can support a 300 g phone without tipping. 'Adjustable angle' might specify 0° to 60° tilt. This step is essential because engineering decisions must be quantified.

将规格分解为可测量的标准。例如，“轻便”可能意味着质量小于 150 g。“稳定”可能意味着在不倾覆的情况下支撑 300 g 的手机。“角度可调”可能指定 0° 到 60° 的倾斜。这一步至关重要，因为工程决策必须量化。

You should also identify constraints: cost per unit, manufacturing time, available machinery, and environmental regulations (e.g., RoHS for electronics).

你还应识别约束条件：单位成本、制造时间、可用的机器以及环境法规（例如电子产品的 RoHS 指令）。

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4. Materials Selection & Justification | 材料选择与论证

Choosing the right material is critical. For our phone stand, we need to consider properties: density (for lightweight), strength (to hold the phone), stiffness, corrosion resistance, and cost. Two candidate materials: aluminium alloy (e.g., 6061) and ABS plastic.

选择合适的材料至关重要。对于我们的手机支架，我们需要考虑以下属性：密度（轻质）、强度（以支撑手机）、刚度、耐腐蚀性和成本。两种候选材料：铝合金（例如 6061）和 ABS 塑料。

Using a comparison table helps:

使用对比表格会很有帮助：

PropertyAluminium Alloy 6061ABS Plastic
Density2.70 g/cm³1.05 g/cm³
Tensile Strength310 MPa40 MPa
Cost per kgMediumLow
Corrosion ResistanceGood (with coating)Excellent
RecyclabilityHighModerate

For high-volume production and lightweight priority, ABS plastic is often chosen because it is cheaper, lighter, and can be injection moulded easily. However, if premium feel and durability are key, anodised aluminium might be used. Always justify your choice with reference to the specification.

对于大批量生产和优先考虑轻便性的情况，通常选择 ABS 塑料，因为它更便宜、更轻且易于注塑成型。然而，如果重视高级质感和耐用性，则可以使用阳极氧化铝。始终根据规格要求论证你的选择。

5. Manufacturing Processes | 制造工艺

Selecting the right manufacturing process depends on the material, production volume, and complexity. For a plastic stand, injection moulding is ideal for 10,000 units: it provides high consistency, low unit cost, and fast cycle times. The mould tooling cost is high initially but is justified by the volume.

选择合适的制造工艺取决于材料、产量和复杂度。对于塑料支架，注塑成型是 10,000 件的理想选择：它提供高度一致性、低单位成本和快速循环时间。初始模具成本高，但产量可分摊此费用。

For aluminium, you might consider die casting or CNC machining. Die casting is suitable for mass production, while CNC machining is better for prototypes or lower volumes. In an exam, link the process to the production scale.

对于铝材，您可以考虑压铸或 CNC 加工。压铸适合大规模生产，而 CNC 加工更适合原型或小批量生产。在考试中，要将工艺与生产规模联系起来。

6. Quality Control and Testing | 质量控制与测试

Quality control (QC) ensures each product meets the design specifications. For the phone stand, QC checks could include:

质量控制 (QC) 确保每个产品符合设计规格。对于手机支架，QC 检查可包括：