OLFA 日本 美工刀 9mm 小号 黑刃 SK-4

评测依据

• review_count：18000
• rating_avg：4.9
• brand_reputation：0
• merchant_count：0
• price_range：[0,99]
• dimension：best_value
• sources：["京东","天猫","亚马逊中国"]
• time_range：{"from":"2026-06-26 00:09:21","to":"2026-06-26 00:09:21"}
• intros：{"brand_intro":"OLFA创立于1956年，是全球第一把折刃式美工刀的发明者，总部位于日本大阪。品牌名源自\"OLd Factory\"缩写，寓意传统工艺与现代创新结合。OLFA在刀具领域拥有超过200项专利，其黑刃系列以碳化钨涂层技术闻名，被手工、模型、印刷行业视为专业级标杆。","product_intro":"OLFA SK-4是经典的9mm小号美工刀，采用碳钢刀刃经碳化钨涂层处理，硬度达到HRC65以上，切割寿命是普通刀刃的5倍。刀身铝合金材质，轻巧且防锈，尾部自带折刃器，可安全折断钝刃。9mm窄刃设计适合精细切割，如纸雕、贴膜、电路板修理等。附赠备用刀片5片。","key_specs":["刀刃宽度：9mm","刀刃材质：碳钢+碳化钨涂层","刀身材质：铝合金","折刃方式：尾部内置折刃器","硬度：HRC 65+","重量：约25g"]}
• alt_products：[{"product_name":"OLFA 日本 美工刀 9mm 小号 黑刃 SK-4","brand":"OLFA","model":"SK-4","price":28},{"product_name":"得力(deli) 自锁钢卷尺5m*19mm 高精度耐磨","brand":"得力","model":"DL9005S","price":12.9},{"product_name":"田岛(Tajima) 不锈钢直尺 30cm 双面刻度","brand":"田岛","model":"L30-150","price":35}]
• kol_quotes：["@模型大师Ken：OLFA SK-4是我工具箱里最锋利的刀，切0.3mm胶板像切豆腐。","@纸艺设计师小鹿：折刃设计太方便了，再也不用到处找钳子掰刀片。"]
• scoring_breakdown：[{"source":"word_of_mouth","score":98.69999999999999,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"1.8万评价，近乎满分。手工圈用户称其为\"神刀\"，特别称赞\"黑刃极其锋利\"\"折刃清脆利落\"\"握持平衡感好\"。模型制作者认为切割胶板、蚀刻片时\"精度无敌\"。价格虽高于国产同类，但用户普遍认为\"一把顶十把\"，复购率极高。是专业美工刀领域的口碑之王。","source_count":3}},{"source":"objective","score":90.3601515151515,"weight":0.4,"confidence":0.5,"details":{"rating_avg":4.9,"price":28,"wom_score":98.69999999999999}},{"source":"user_review","score":98,"weight":0.3,"confidence":1,"details":{"rating_avg":4.9,"review_count":18000,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.1,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["@模型大师Ken：OLFA SK-4是我工具箱里最锋利的刀，切0.3mm胶板像切豆腐。","@纸艺设计师小鹿：折刃设计太方便了，再也不用到处找钳子掰刀片。"]}}]
• method_version：v2
• search_visual：null